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  • WD MBWE II (White Strip Light) 2TB - unable to access data

    - by user210477
    I have a WD MBWE II (White Strip Light) 2TB - (WD20000H2NC-00) Was working fine until a few days ago. I guess there was a power failure and after that I am unable to access the 'Public' or the 'Download' folder anymore. I have been searching for answers everywhere but came up empty handed. Web GUI still works, SSH works. I hooked up both the drives on my PC and UFS Explorer sees the drive. But so far I am unable to retrieve any of my data. I do not remember what RAID setting I used when I first got the drive. I can see from GUI that it is set as "Stripe". The drive contains 10 years of family pictures which I really do not want to loose. Sadly and stupidly, I didn't even keep a backup of this drive. Can somebody please help or point me in the right direction. Thank you in advance for your help. Disk Utility on Ubuntu reports 1405 bad sectors on one drive. How can I retrieve my data? Please help. Logs below: ~ # mdadm --detail /dev/md[012345678] /dev/md0: Version : 0.90 Creation Time : Wed Jul 15 08:36:17 2009 Raid Level : raid1 Array Size : 1959872 (1914.26 MiB 2006.91 MB) Used Dev Size : 1959872 (1914.26 MiB 2006.91 MB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Fri Nov 1 13:53:29 2013 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : 04f7a661:98983b3b:26b29e4f:9b646adb Events : 0.266 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 8 17 1 active sync /dev/sdb1 /dev/md1: Version : 0.90 Creation Time : Wed Jul 15 08:36:18 2009 Raid Level : raid1 Array Size : 256896 (250.92 MiB 263.06 MB) Used Dev Size : 256896 (250.92 MiB 263.06 MB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 1 Persistence : Superblock is persistent Update Time : Wed Oct 30 22:08:21 2013 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : aaa7b859:c475312d:efc5a766:6526b867 Events : 0.10 Number Major Minor RaidDevice State 0 8 2 0 active sync /dev/sda2 1 8 18 1 active sync /dev/sdb2 /dev/md2: Version : 0.90 Creation Time : Sat Sep 25 10:01:26 2010 Raid Level : raid0 Array Size : 1947045760 (1856.85 GiB 1993.77 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 2 Persistence : Superblock is persistent Update Time : Fri Nov 1 13:30:53 2013 State : active Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Chunk Size : 64K UUID : 01dae60a:6831077b:77f74530:8680c183 Events : 0.97 Number Major Minor RaidDevice State 0 8 4 0 active sync /dev/sda4 1 8 20 1 active sync /dev/sdb4 /dev/md3: Version : 0.90 Creation Time : Wed Jul 15 08:36:18 2009 Raid Level : raid1 Array Size : 987904 (964.91 MiB 1011.61 MB) Used Dev Size : 987904 (964.91 MiB 1011.61 MB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 3 Persistence : Superblock is persistent Update Time : Fri Nov 1 13:26:33 2013 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : 3f4099f2:72e6171b:5ba962fd:48464a62 Events : 0.54 Number Major Minor RaidDevice State 0 8 3 0 active sync /dev/sda3 1 8 19 1 active sync /dev/sdb3 mdadm: md device /dev/md4 does not appear to be active. mdadm: md device /dev/md5 does not appear to be active. mdadm: md device /dev/md6 does not appear to be active. mdadm: md device /dev/md7 does not appear to be active. mdadm: md device /dev/md8 does not appear to be active. ~ # cat /etc/mtab securityfs /sys/kernel/security securityfs rw 0 0 /dev/md2 /DataVolume xfs rw,usrquota 0 0 /dev/md4 /ExtendVolume xfs rw,usrquota 0 0 ~ # df -k Filesystem 1k-blocks Used Available Use% Mounted on /dev/md0 1929044 145092 1685960 8% / /dev/md3 972344 123452 799500 13% /var /dev/ram0 63412 20 63392 0% /mnt/ram ~ # mdadm -D /dev/md2 /dev/md2: Version : 0.90 Creation Time : Sat Sep 25 10:01:26 2010 Raid Level : raid0 Array Size : 1947045760 (1856.85 GiB 1993.77 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 2 Persistence : Superblock is persistent Update Time : Fri Nov 1 13:30:53 2013 State : active Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Chunk Size : 64K UUID : 01dae60a:6831077b:77f74530:8680c183 Events : 0.97 Number Major Minor RaidDevice State 0 8 4 0 active sync /dev/sda4 1 8 20 1 active sync /dev/sdb4 ~ # mdadm -D /dev/md4 mdadm: md device /dev/md4 does not appear to be active. ~ # mount /dev/root on / type ext3 (rw,noatime,data=ordered) proc on /proc type proc (rw) sys on /sys type sysfs (rw) /dev/pts on /dev/pts type devpts (rw) securityfs on /sys/kernel/security type securityfs (rw) /dev/md3 on /var type ext3 (rw,noatime,data=ordered) /dev/ram0 on /mnt/ram type tmpfs (rw) ~ # cat /var/log/messages Oct 29 18:04:50 shmotashNAS daemon.warn wixEvent[3462]: Network Link - NIC 1 link is down. Oct 29 18:04:59 shmotashNAS daemon.info wixEvent[3462]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 29 18:04:59 shmotashNAS daemon.info wixEvent[3462]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 29 18:17:45 shmotashNAS daemon.warn wixEvent[3462]: Network Link - NIC 1 link is down. Oct 29 18:17:53 shmotashNAS daemon.info wixEvent[3462]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 29 18:17:53 shmotashNAS daemon.info wixEvent[3462]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 00:50:11 shmotashNAS daemon.warn wixEvent[3462]: Network Link - NIC 1 link is down. Oct 30 00:50:19 shmotashNAS daemon.info wixEvent[3462]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 00:50:19 shmotashNAS daemon.info wixEvent[3462]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 16:29:47 shmotashNAS daemon.warn wixEvent[3462]: Network Link - NIC 1 link is down. Oct 30 16:30:00 shmotashNAS daemon.info wixEvent[3462]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 16:30:00 shmotashNAS daemon.info wixEvent[3462]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 18:27:22 shmotashNAS daemon.warn wixEvent[3462]: Network Link - NIC 1 link is down. Oct 30 18:27:30 shmotashNAS daemon.info wixEvent[3462]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 18:27:30 shmotashNAS daemon.info wixEvent[3462]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 19:06:03 shmotashNAS daemon.warn wixEvent[3462]: Network Link - NIC 1 link is down. Oct 30 19:06:10 shmotashNAS daemon.info wixEvent[3462]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 19:06:10 shmotashNAS daemon.info wixEvent[3462]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 19:14:58 shmotashNAS daemon.warn wixEvent[3462]: Media Server - Media Server cannot find the path to one or more of the default folders: /Public/Shared Music, /Public/Shared Pictures or /Public/Shared Videos. Please verify that these folders have not been removed or that the names have not been changed. Oct 30 19:20:05 shmotashNAS daemon.alert wixEvent[3462]: Thermal Alarm - System temperature exceeded threshold.(66 degrees) Oct 30 19:58:29 shmotashNAS daemon.alert wixEvent[3462]: HDD SMART - HDD 1 SMART Health Status: Failed. Oct 30 22:05:39 shmotashNAS daemon.info init: Starting pid 13043, console /dev/null: '/usr/bin/killall' Oct 30 22:05:39 shmotashNAS syslog.info System log daemon exiting. Oct 30 22:08:09 shmotashNAS syslog.info syslogd started: BusyBox v1.1.1 Oct 30 22:08:09 shmotashNAS daemon.warn wixEvent[3557]: Network Link - NIC 1 link is down. Oct 30 22:08:19 shmotashNAS daemon.info wixEvent[3557]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 22:08:25 shmotashNAS daemon.warn wixEvent[3557]: Network Link - NIC 1 link is down. Oct 30 22:08:37 shmotashNAS daemon.info wixEvent[3557]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 22:08:44 shmotashNAS daemon.warn wixEvent[3557]: Network Link - NIC 1 link is down. Oct 30 22:08:46 shmotashNAS syslog.info miocrawler: +++++++++++++++ START OF ./miocrawler at 2013:10:30 - 22:08:46 [Version 01.09.00.96] ++++++++++++++ Oct 30 22:08:46 shmotashNAS syslog.info miocrawler: mc_db_init ... Oct 30 22:08:46 shmotashNAS syslog.info miocrawler: ****** database does not exist. ret = -1, creating path Oct 30 22:08:49 shmotashNAS syslog.info miocrawler: === mc_db_init ...Done. Oct 30 22:08:50 shmotashNAS syslog.info miocrawler: mcUtilsInit() Creating free queue pool Oct 30 22:08:51 shmotashNAS syslog.info miocrawler: === mcUtilsInit() Done. Oct 30 22:08:51 shmotashNAS syslog.info miocrawler: === inotify init done. Oct 30 22:08:51 shmotashNAS syslog.info miocrawler: mc_trans_updater_init() ... Oct 30 22:08:52 shmotashNAS syslog.info miocrawler: === mc_trans_updater_init() ...Done. Oct 30 22:08:52 shmotashNAS syslog.info miocrawler: === Walking directory done. Oct 30 22:08:57 shmotashNAS daemon.info wixEvent[3557]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 22:08:57 shmotashNAS daemon.info wixEvent[3557]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 22:08:57 shmotashNAS daemon.info wixEvent[3557]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 22:08:57 shmotashNAS daemon.info wixEvent[3557]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 22:09:10 shmotashNAS daemon.info init: Starting pid 4605, console /dev/null: '/bin/touch' Oct 30 22:09:10 shmotashNAS daemon.info init: Starting pid 4607, console /dev/ttyS0: '/sbin/getty' Oct 30 22:09:10 shmotashNAS daemon.info wixEvent[3557]: System Startup - System startup. Oct 30 22:09:16 shmotashNAS daemon.warn wixEvent[3557]: Media Server - Media Server cannot find the path to one or more of the default folders: /Public/Shared Music, /Public/Shared Pictures or /Public/Shared Videos. Please verify that these folders have not been removed or that the names have not been changed. Oct 30 22:14:14 shmotashNAS daemon.warn wixEvent[3557]: Network Link - NIC 1 link is down. Oct 30 22:14:21 shmotashNAS daemon.info wixEvent[3557]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 22:14:21 shmotashNAS daemon.info wixEvent[3557]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 22:29:36 shmotashNAS daemon.warn wixEvent[3557]: System Reboot - System will reboot. Oct 30 22:29:40 shmotashNAS daemon.info init: Starting pid 5974, console /dev/null: '/usr/bin/killall' Oct 30 22:29:40 shmotashNAS syslog.info System log daemon exiting. Oct 30 22:47:56 shmotashNAS syslog.info syslogd started: BusyBox v1.1.1 Oct 30 22:47:56 shmotashNAS daemon.warn wixEvent[3461]: Network Link - NIC 1 link is down. Oct 30 22:48:02 shmotashNAS daemon.info wixEvent[3461]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 22:48:02 shmotashNAS daemon.info wixEvent[3461]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 22:48:09 shmotashNAS syslog.info miocrawler: +++++++++++++++ START OF ./miocrawler at 2013:10:30 - 22:48:09 [Version 01.09.00.96] ++++++++++++++ Oct 30 22:48:09 shmotashNAS syslog.info miocrawler: mc_db_init ... Oct 30 22:48:09 shmotashNAS syslog.info miocrawler: ++++++++ database exists: ret = 0 Oct 30 22:48:10 shmotashNAS syslog.info miocrawler: === mc_db_init ...Done. Oct 30 22:48:10 shmotashNAS syslog.info miocrawler: mcUtilsInit() Creating free queue pool Oct 30 22:48:11 shmotashNAS syslog.info miocrawler: === mcUtilsInit() Done. Oct 30 22:48:11 shmotashNAS syslog.info miocrawler: === inotify init done. Oct 30 22:48:11 shmotashNAS syslog.info miocrawler: mc_trans_updater_init() ... Oct 30 22:48:11 shmotashNAS syslog.info miocrawler: === mc_trans_updater_init() ...Done. Oct 30 22:48:11 shmotashNAS syslog.info miocrawler: === Walking directory done. Oct 30 22:48:27 shmotashNAS daemon.info init: Starting pid 4079, console /dev/null: '/bin/touch' Oct 30 22:48:27 shmotashNAS daemon.info init: Starting pid 4080, console /dev/ttyS0: '/sbin/getty' Oct 30 22:48:28 shmotashNAS daemon.info wixEvent[3461]: System Startup - System startup. Oct 30 22:49:01 shmotashNAS daemon.warn wixEvent[3461]: Media Server - Media Server cannot find the path to one or more of the default folders: /Public/Shared Music, /Public/Shared Pictures or /Public/Shared Videos. Please verify that these folders have not been removed or that the names have not been changed. Oct 30 23:51:11 shmotashNAS daemon.warn wixEvent[3461]: System Reboot - System will reboot. Oct 30 23:51:16 shmotashNAS daemon.info init: Starting pid 6498, console /dev/null: '/usr/bin/killall' Oct 30 23:51:16 shmotashNAS syslog.info System log daemon exiting. Oct 30 23:54:19 shmotashNAS syslog.info syslogd started: BusyBox v1.1.1 Oct 30 23:55:37 shmotashNAS daemon.info wixEvent[3476]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 30 23:55:37 shmotashNAS daemon.info wixEvent[3476]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 30 23:55:44 shmotashNAS syslog.info miocrawler: +++++++++++++++ START OF ./miocrawler at 2013:10:30 - 23:55:44 [Version 01.09.00.96] ++++++++++++++ Oct 30 23:55:44 shmotashNAS syslog.info miocrawler: mc_db_init ... Oct 30 23:55:44 shmotashNAS syslog.info miocrawler: ++++++++ database exists: ret = 0 Oct 30 23:55:45 shmotashNAS syslog.info miocrawler: === mc_db_init ...Done. Oct 30 23:55:45 shmotashNAS syslog.info miocrawler: mcUtilsInit() Creating free queue pool Oct 30 23:55:46 shmotashNAS syslog.info miocrawler: === mcUtilsInit() Done. Oct 30 23:55:46 shmotashNAS syslog.info miocrawler: === inotify init done. Oct 30 23:55:46 shmotashNAS syslog.info miocrawler: mc_trans_updater_init() ... Oct 30 23:55:46 shmotashNAS syslog.info miocrawler: === mc_trans_updater_init() ...Done. Oct 30 23:55:46 shmotashNAS syslog.info miocrawler: === Walking directory done. Oct 30 23:55:58 shmotashNAS daemon.info init: Starting pid 4115, console /dev/null: '/bin/touch' Oct 30 23:55:58 shmotashNAS daemon.info init: Starting pid 4116, console /dev/ttyS0: '/sbin/getty' Oct 30 23:55:58 shmotashNAS daemon.info wixEvent[3476]: System Startup - System startup. Oct 30 23:56:33 shmotashNAS daemon.warn wixEvent[3476]: Media Server - Media Server cannot find the path to one or more of the default folders: /Public/Shared Music, /Public/Shared Pictures or /Public/Shared Videos. Please verify that these folders have not been removed or that the names have not been changed. Oct 31 00:29:14 shmotashNAS auth.info sshd[5409]: Server listening on 0.0.0.0 port 22. Oct 31 00:31:25 shmotashNAS auth.info sshd[5486]: Accepted password for root from 192.168.1.100 port 50785 ssh2 Oct 31 00:33:44 shmotashNAS auth.info sshd[5565]: Accepted password for root from 192.168.1.100 port 50817 ssh2 Oct 31 00:36:39 shmotashNAS daemon.info init: Starting pid 5680, console /dev/null: '/usr/bin/killall' Oct 31 00:36:39 shmotashNAS syslog.info System log daemon exiting. Oct 31 00:40:44 shmotashNAS syslog.info syslogd started: BusyBox v1.1.1 Oct 31 00:40:51 shmotashNAS daemon.info wixEvent[3464]: Network Link - NIC 1 link is up 100 Mbps full duplex. Oct 31 00:40:51 shmotashNAS daemon.info wixEvent[3464]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Oct 31 00:41:00 shmotashNAS syslog.info miocrawler: +++++++++++++++ START OF ./miocrawler at 2013:10:31 - 00:41:00 [Version 01.09.00.96] ++++++++++++++ Oct 31 00:41:00 shmotashNAS syslog.info miocrawler: mc_db_init ... Oct 31 00:41:00 shmotashNAS syslog.info miocrawler: ++++++++ database exists: ret = 0 Oct 31 00:41:00 shmotashNAS syslog.info miocrawler: === mc_db_init ...Done. Oct 31 00:41:01 shmotashNAS syslog.info miocrawler: mcUtilsInit() Creating free queue pool Oct 31 00:41:02 shmotashNAS syslog.info miocrawler: === mcUtilsInit() Done. Oct 31 00:41:02 shmotashNAS syslog.info miocrawler: === inotify init done. Oct 31 00:41:02 shmotashNAS syslog.info miocrawler: mc_trans_updater_init() ... Oct 31 00:41:02 shmotashNAS syslog.info miocrawler: === mc_trans_updater_init() ...Done. Oct 31 00:41:02 shmotashNAS syslog.info miocrawler: === Walking directory done. Oct 31 00:41:14 shmotashNAS daemon.info init: Starting pid 4101, console /dev/null: '/bin/touch' Oct 31 00:41:14 shmotashNAS daemon.info init: Starting pid 4102, console /dev/ttyS0: '/sbin/getty' Oct 31 00:41:15 shmotashNAS daemon.info wixEvent[3464]: System Startup - System startup. Oct 31 00:41:47 shmotashNAS daemon.warn wixEvent[3464]: Media Server - Media Server cannot find the path to one or more of the default folders: /Public/Shared Music, /Public/Shared Pictures or /Public/Shared Videos. Please verify that these folders have not been removed or that the names have not been changed. Oct 31 01:13:19 shmotashNAS daemon.info init: Starting pid 5385, console /dev/null: '/usr/bin/killall' Oct 31 01:13:19 shmotashNAS syslog.info System log daemon exiting. Nov 1 13:26:25 shmotashNAS syslog.info syslogd started: BusyBox v1.1.1 Nov 1 13:26:32 shmotashNAS daemon.info wixEvent[3471]: Network Link - NIC 1 link is up 100 Mbps full duplex. Nov 1 13:26:32 shmotashNAS daemon.info wixEvent[3471]: Network IP Address - NIC 1 use static IP address 192.168.1.102 Nov 1 13:26:38 shmotashNAS syslog.info miocrawler: +++++++++++++++ START OF ./miocrawler at 2013:11:01 - 13:26:38 [Version 01.09.00.96] ++++++++++++++ Nov 1 13:26:38 shmotashNAS syslog.info miocrawler: mc_db_init ... Nov 1 13:26:38 shmotashNAS syslog.info miocrawler: ++++++++ database exists: ret = 0 Nov 1 13:26:39 shmotashNAS syslog.info miocrawler: === mc_db_init ...Done. Nov 1 13:26:39 shmotashNAS syslog.info miocrawler: mcUtilsInit() Creating free queue pool Nov 1 13:26:40 shmotashNAS syslog.info miocrawler: === mcUtilsInit() Done. Nov 1 13:26:40 shmotashNAS syslog.info miocrawler: === inotify init done. Nov 1 13:26:40 shmotashNAS syslog.info miocrawler: mc_trans_updater_init() ... Nov 1 13:26:40 shmotashNAS syslog.info miocrawler: === mc_trans_updater_init() ...Done. Nov 1 13:26:40 shmotashNAS syslog.info miocrawler: === Walking directory done. Nov 1 13:26:52 shmotashNAS daemon.info init: Starting pid 4078, console /dev/null: '/bin/touch' Nov 1 13:26:52 shmotashNAS daemon.info init: Starting pid 4079, console /dev/ttyS0: '/sbin/getty' Nov 1 13:26:52 shmotashNAS daemon.info wixEvent[3471]: System Startup - System startup. Nov 1 13:27:28 shmotashNAS daemon.warn wixEvent[3471]: Media Server - Media Server cannot find the path to one or more of the default folders: /Public/Shared Music, /Public/Shared Pictures or /Public/Shared Videos. Please verify that these folders have not been removed or that the names have not been changed. Nov 1 13:44:48 shmotashNAS auth.info sshd[5375]: Accepted password for root from 192.168.1.103 port 50217 ssh2 Nov 1 13:51:08 shmotashNAS auth.info sshd[5894]: Accepted password for root from 192.168.1.103 port 50380 ssh2

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  • Why my 2nd ip from traceroute is not answering the ping anymore?

    - by Pedro77
    My Internet is really laggy today, I did a tracerout and I realize that I'm having no answer from an ip at the beginning of the traceroute. see: Tracing route to 12.129.202.154 over a maximum of 30 hops 1 <1 ms <1 ms <1 ms 192.168.0.1 2 * * * Request timed out. 3 8 ms 8 ms 8 ms bd044008.virtua.com.br [189.4.64.8] 4 9 ms 8 ms 8 ms bd044009.virtua.com.br [189.4.64.9] 5 26 ms 26 ms 24 ms embratel-T0-1-5-0-tacc01.cas.embratel.net.br [200.174.243.21] 6 360 ms 15 ms 12 ms ebt-T0-15-0-12-tcore01.ctamc.embratel.net.br [200.244.140.218] 7 330 ms 349 ms 261 ms ebt-Bundle-POS11942-intl04.mianap.embratel.net.br [200.230.220.10] 8 139 ms 141 ms 139 ms sl-st30-mia-.sprintlink.net [144.223.64.221] Connection diagram: PC - Router configured as access point - Router (192.168.0.1) - Cable modem (192.168.100.1). Well, I think it is odd that the 2nd ip is not returning the ping. I looked some old tracerout logs to see what was the 2nd ip. The ip was: 10.19.0.1 So, what this 2nd ip stand for? How can I find why it is not answering the ping? I don't understand it, if does not answer the ping, how can the packets continue (yeah newbie question)? edit: well, because the hope 3 have a ping of 8 ms the hop 2 request time out should really not be a problem. But it is still odd that the 2nd hop stopped to answer ping request. So my doubts are: 1. Were the ip 10.19.0.1 is from? 2. Why it stopped to answer ping requests? 3. How can hop 7 be smaller than 6 and 8 smaller than 7 and 6!?? Shouldn't the pings be higher for each hop? Like: hop 3 time should be the sum of the hops before it plus its own time (hop 3 = 1+2+3) ??

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  • How to create a static IP on Windows Server 2008 R2 so I can access the server remotely

    - by Aesir
    I have just purchased a HP Proliant N40L which I am intending to use as a NAS, learning tool and just in general something to mess around with. As a student via the Microsoft dreamspark program I can get a free copy of Windows Server 2008 R2 which I am using as the OS. So that I can remote to the box from outside of my local network and so that I can stream media from it to my PS3, I have read that I need to create a static IP for the server and use port forwarding to forward to this IP so I can remote in. Is this correct? I am not really sure how to do this and if I need to make these changes on my router configuration, on the OS or both. I am a novice when it comes to networking however most resources for Windows server 2008 R2 seem to assume a fair amount of experience already. I realise that using this particular OS may seem like overkill for what I currently wish to do with it (stream content to other devices and backup) but as I can get a copy for free it seems sensible. Edit: From reading answers posted I feel I should give more information. I have now tried to add a static IP address using my router configuration settings. I have used the getmac command to get the mac address of the server. My ISP is Virgin Media and I have gone to the LAN IP section and I have added an IP address to the DHCP Reservation Lease Info. I can now use remote desktop connection internally to remote to the server (so I am assuming assigning this IP has worked). How do I configure this on the OS as well? I am also unsure on how I would remote to this machine outside of my local network?

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  • iptables: How to combine DNAT and SNAT to use a secondary IP address?

    - by Que_273
    There are lots of questions on here about iptables DNAT/SNAT setups but I haven't found one that solves my current problem. I have services bound to the IP address of eth0 (e.g. 192.168.0.20) and I also have a IP address on eth0:0 (192.168.0.40) which is shared with another server. Only one server is active, so this alias interface comes and goes depending on which server is active. In order to get traffic accepted by the service a DNAT rule is used to change the destination IP. iptables -t nat -A PREROUTING -d 192.168.0.40 -p udp --dport 7100 -j DNAT --to-destination 192.168.0.20 I also wish all outbound traffic from this service to appear to come from the shared IP, so that return responses will work in the event of a active-standby failover. iptables -t nat -A POSTROUTING -p udp --sport 7100 -j SNAT --to-source 192.168.0.40 My problem is that the SNAT rule is not always run. Inbound traffic causes a connection tracking entry like this. [root]# conntrack -L -p udp udp 17 170 src=192.168.0.185 dst=192.168.0.40 sport=7100 dport=7100 src=192.168.0.20 dst=192.168.0.185 sport=7100 dport=7100 [ASSURED] mark=0 secmark=0 use=2 which means the POSTROUTING chain is not run and outbound traffic leaves with the real IP address as the source. I am thinking I can set up a NOTRACK rule in the raw table to prevent conntracking for this port number, but is there a better or more efficient way to make this work? Edit - Alternative question: Is there a way (in CentOS/Linux) to have an interface that can be bound to but not used, such that it can be attached to the network or detached when a shared IP address is swapped between servers?

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  • What is the best time to set the IP address for a server headed to a server colocation facility?

    - by jim_m_somewhere
    What is the best time to set the IP address for a server? I have a server that I am going to install the OS on and then I am going to send it to a server colocation facility. The server is going to have Internet facing services (www, email, etc.) I can set up a "fake" IP address during install (by fake I mean private as in RFC 1918) and change the "fake" IPs to the real IPs once I set up the colocation service. The other option is to set up the colocation service...wait for them to give me the "real" IPs and use them during the OS install. The ramification are that...if I use "fake" IPs during install...I will have to wait before I set up things like SSL certs. If I wait for IPs from the colocation provider...then I can set up SSL certs that use the "correct" (as in "real") IP addresses...no changes to the certs until they expire. Do the "gotchas" of changing an IP address on a server outweigh the benefits of a quick install? The other danger with using "fake" IPs is that I could make a mistake when I go through the various files to change the IP address to the "live" IP address. Server OS: CentOS 6.2 or CentOS 6.3, 64 bit. Apps: Apache 2.4.X httpd, MySQL 5.X (will eventually use replication)

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  • Threads to make video out of images

    - by masood
    updates: I think/ suspect the imageIO is not thread safe. shared by all threads. the read() call might use resources that are also shared. Thus it will give the performance of a single thread no matter how many threads used. ? if its correct . what is the solution (in practical code) Single request and response model at one time do not utilizes full network/internet bandwidth, thus resulting in low performance. (benchmark is of half speed utilization or even lower) This is to make a video out of an IP cam that gives a new image on each request. http://149.5.43.10:8001/snapshot.jpg It makes a delay of 3 - 8 seconds no matter what I do. Changed thread no. and thread time intervals, debugged the code by System.out.println statements to see if threads work. All seems normal. Any help? Please show some practical code. You may modify mine. This code works (javascript) with much smoother frame rate and max bandwidth usage. but the later code (java) dont. same 3 to 8 seconds gap. <!DOCTYPE html> <html> <head> <script type="text/javascript"> (function(){ var img="/*url*/"; var interval=50; var pointer=0; function showImg(image,idx) { if(idx<=pointer) return; document.body.replaceChild(image,document.getElementsByTagName("img")[0]); pointer=idx; preload(); } function preload() { var cache=null,idx=0;; for(var i=0;i<5;i++) { idx=Date.now()+interval*(i+1); cache=new Image(); cache.onload=(function(ele,idx){return function(){showImg(ele,idx);};})(cache,idx); cache.src=img+"?"+idx; } } window.onload=function(){ document.getElementsByTagName("img")[0].onload=preload; document.getElementsByTagName("img")[0].src="/*initial url*/"; }; })(); </script> </head> <body> <img /> </body> </html> and of java (with problem) : package camba; import java.applet.Applet; import java.awt.Button; import java.awt.Graphics; import java.awt.Image; import java.awt.Label; import java.awt.Panel; import java.awt.TextField; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.net.URL; import java.security.Timestamp; import java.util.Date; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicBoolean; import javax.imageio.ImageIO; public class Camba extends Applet implements ActionListener{ Image img; TextField textField; Label label; Button start,stop; boolean terminate = false; long viewTime; public void init(){ label = new Label("please enter camera URL "); add(label); textField = new TextField(30); add(textField); start = new Button("Start"); add(start); start.addActionListener(this); stop = new Button("Stop"); add(stop); stop.addActionListener(this); } public void actionPerformed(ActionEvent e){ Button source = (Button)e.getSource(); if(source.getLabel() == "Start"){ for (int i = 0; i < 7; i++) { myThread(50*i); } System.out.println("start..."); } if(source.getLabel() == "Stop"){ terminate = true; System.out.println("stop..."); } } public void paint(Graphics g) { update(g); } public void update(Graphics g){ try{ viewTime = System.currentTimeMillis(); g.drawImage(img, 100, 100, this); } catch(Exception e) { e.printStackTrace(); } } public void myThread(final int sleepTime){ new Thread(new Runnable() { public void run() { while(!terminate){ try { TimeUnit.MILLISECONDS.sleep(sleepTime); } catch (InterruptedException ex) { ex.printStackTrace(); } long requestTime= 0; Image tempImage = null; try { URL pic = null; requestTime= System.currentTimeMillis(); pic = new URL(getDocumentBase(), textField.getText()); tempImage = ImageIO.read(pic); } catch(Exception e) { e.printStackTrace(); } if(requestTime >= /*last view time*/viewTime){ img = tempImage; Camba.this.repaint(); } } }}).start(); System.out.println("thread started..."); } }

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  • How can you change Network settings (IP Address, DNS, WINS, Host Name) with code in C#

    - by rathkopf
    I am developing a wizard for a machine that is to be used as a backup of other machines. When it replaces an existing machine, it needs to set its IP address, DNS, WINS, and host name to match the machine being replaced. Is there a library in .net (C#) which allows me to do this programatically? There are multiple NICs, each which need to be set individually. EDIT Thannk you TimothyP for your example. It got me moving on the right track and the quick reply was awesome. Thanks balexandre. Your code is perfect. I was in a rush and had already adapted the example TimothyP linked to, but I would have loved to have had your code sooner. I've also developed a routine using similar techniques for changing the computer name. I'll post it in the future so subscribe to this questions RSS feed if you want to be informed of the update. I may get it up later today or on Monday after a bit of cleanup.

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  • VMWare steals IP addresses [closed]

    - by Ishan Amin
    I'm having a peculiar problem, that I think I have narrowed down to VMware. For the past one year, every once in a while we lose internet connection and not all users (about 10 users) go down at the same time, its usually one-by-one. First someone will call me and say "Internet is down" and then we would go reset the router and modem and switch and it would be working again for a while, then go down again without any pattern or replicatable sequence. We'd go repeat the steps again to get everyone in the office running again. We called our Internet Service Provider and they constantly say, We see your modem and we see your router and from thier end everything is OK. we replaced our router and switch and modem, twice! Last friday, it dawned upon me, that everytime we turn on a VMware machine, this sequence of taking everyone down starts, which also explains the message that my users get for "IP Conflict Found" So we do alot of VMware testing and lo and behold, it takes my Internet down. My Yahoo and Gtalk would continue working but www is down when the VMware machines are started. I do use bridged networking to all the VMware machines, but I dont know what else to set it at. now, sorry for this long rambling but anyone have any clue on how to stop this? thanks IA

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  • Proper way to scan a range of IP addresses

    - by Josh G
    Given a range of IP addresses entered by a user (through various means), I want to identify which of these machines have software running that I can talk to. Here's the basic process: Ping these addresses to find available machines Connect to a known socket on the available machines Send a message to the successfully established sockets Compare the response to the expected response Steps 2-4 are straight forward for me. What is the best way to implement the first step in .NET? I'm looking at the System.Net.NetworkInformation.Ping class. Should I ping multiple addresses simultaneously to speed up the process? If I ping one address at a time with a long timeout it could take forever. But with a small timeout, I may miss some machines that are available. Sometimes pings appear to be failing even when I know that the address points to an active machine. Do I need to ping twice in the event of the request getting discarded? To top it all off, when I scan large collections of addresses with the network cable unplugged, Ping throws a NullReferenceException in FreeUnmanagedResources(). !? Any pointers on the best approach to scanning a range of IPs like this?

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  • ColdFusion Session issue - multiple users behind one proxy IP -- cftoken and cfid seems to be shared

    - by smoothoperator
    Hi Everyone, I have an application that uses coldfusion's session management (instead of the J2EE) session management. We have one client, who has recently switched their company's traffic to us to come viaa proxy server in their network. So, to our Coldfusion server, it appears that all traffic is coming from this one IP Address, for all of the accounts of this one company.. Of the session variables, Part 1 is kept in a cflock, and Part 2 is kept in editable session variables. I may be misundestanding, but we have done it this way as we modify some values as needed throughout the application's usage. We are now running into an issue of this client having their session variables mixed up (?). We have one case where we set a timestamp.. and when it comes time to look it up, it's empty. From the looks of it this is happening because of another user on the same token. My initial thoughts are to look into modifying our existing session management to somehow generate a unique cftoken/cfid, or to start using jsession_ID, if this solves the problem at all. I have done some basic research on this issue and couldn't find anything similar, so I thought I'd ask here. Thanks!

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  • implementing a Intelligent File Transfer Software in java over TCP/IP

    - by whyjava
    Hello I am working on a proposal where we have to implement a software which can move files between one source to destination.The overall goal of this project is to create intelligent file transfer.This software will have three components :- 1) Broker : Broker is the module that communicates with other brokers, monitors files, moves files, retrieves configurations from the Configuration Manager, supplies process information for the monitor, archives files, writes all process data to log files and escalates issues if necessary 2) Configuration Manager :Configuration Manager is a web-based application used to configure and deploy the configuration to all brokers. 3) Monitor : Monitor is a web-based application used to monitor each Broker in the environment. This project has to be built up in java and protocol for file transfer in tcp/ip. Client does not want to use FTP. File Transfer seems very easy, until there are several processes who are waiting to pick the file up automatically. Several problems arise: How can we guarantee the file is received at the destination? If a file isn’t received the first time, we should try it again (even after a restart or power breakdown) ? How does the receiver knows the file that is received is complete? How can we transfer multiple files synchronously? How can we protect the bandwidth, so file transfer isn’t blocking other processes? How does one interoperate between multiple OS platforms? What about authentication? How can we monitor het workflow? Auditing / logging Archiving Can you please provide answer to some of these? Thanks

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  • md5_file() not working with IP addresses?

    - by Rob
    Here is my code relating to the question: $theurl = trim($_POST['url']); $md5file = md5_file($theurl); if ($md5file != '96a0cec80eb773687ca28840ecc67ca1') { echo 'Hash doesn\'t match. Incorrect file. Reupload it and try again'; When I run this script, it doesn't even output an error. It just stops. It loads for a bit, and then it just stops. Further down the script I implement it again, and it fails here, too: while($row=mysql_fetch_array($execquery, MYSQL_ASSOC)){ $hash = @md5_file($row['url']); $url = $row['url']; mysql_query("UPDATE urls SET hash='" . $hash . "' WHERE url='" . $url . "'") or die("MYSQL is indeed gay: ".mysql_error()); if ($hash != '96a0cec80eb773687ca28840ecc67ca1'){ $status = 'down'; }else{ $status = 'up'; } mysql_query("UPDATE urls SET status='" . $status . "' WHERE url='" . $url . "'") or die("MYSQL is indeed gay: ".mysql_error()); } And it checks all the URL's just fine, until it gets to one with an IP instead of a domain, such as: http://188.72.215.195/config.php In which, again, the script then just loads for a bit, and then stops. Any help would be much appreciated, if you need any more information just ask.

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  • Building a SOA/BPM/BAM Cluster Part I &ndash; Preparing the Environment

    - by antony.reynolds
    An increasing number of customers are using SOA Suite in a cluster configuration, I might hazard to say that the majority of production deployments are now using SOA clusters.  So I thought it may be useful to detail the steps in building an 11g cluster and explain a little about why things are done the way they are. In this series of posts I will explain how to build a SOA/BPM cluster using the Enterprise Deployment Guide. This post will explain the setting required to prepare the cluster for installation and configuration. Software Required The following software is required for an 11.1.1.3 SOA/BPM install. Software Version Notes Oracle Database Certified databases are listed here SOA & BPM Suites require a working database installation. Repository Creation Utility (RCU) 11.1.1.3 If upgrading an 11.1.1.2 repository then a separate script is available. Web Tier Utilities 11.1.1.3 Provides Web Server, 11.1.1.3 is an upgrade to 11.1.1.2, so 11.1.1.2 must be installed first. Web Tier Utilities 11.1.1.3 Web Server, 11.1.1.3 Patch.  You can use the 11.1.1.2 version without problems. Oracle WebLogic Server 11gR1 10.3.3 This is the host platform for 11.1.1.3 SOA/BPM Suites. SOA Suite 11.1.1.2 SOA Suite 11.1.1.3 is an upgrade to 11.1.1.2, so 11.1.1.2 must be installed first. SOA Suite 11.1.1.3 SOA Suite 11.1.1.3 patch, requires 11.1.12 to have been installed. My installation was performed on Oracle Enterprise Linux 5.4 64-bit. Database I will not cover setting up the database in this series other than to identify the database requirements.  If setting up a SOA cluster then ideally we would also be using a RAC database.  I assume that this is running on separate machines to the SOA cluster.  Section 2.1, “Database”, of the EDG covers the database configuration in detail. Settings The database should have processes set to at least 400 if running SOA/BPM and BAM. alter system set processes=400 scope=spfile Run RCU The Repository Creation Utility creates the necessary database tables for the SOA Suite.  The RCU can be run from any machine that can access the target database.  In 11g the RCU creates a number of pre-defined users and schema with a user defiend prefix.  This allows you to have multiple 11g installations in the same database. After running the RCU you need to grant some additional privileges to the soainfra user.  The soainfra user should have privileges on the transaction tables. grant select on sys.dba_pending_transactions to prefix_soainfra Grant force any transaction to prefix_soainfra Machines The cluster will be built on the following machines. EDG Name is the name used for this machine in the EDG. Notes are a description of the purpose of the machine. EDG Name Notes LB External load balancer to distribute load across and failover between web servers. WEBHOST1 Hosts a web server. WEBHOST2 Hosts a web server. SOAHOST1 Hosts SOA components. SOAHOST2 Hosts SOA components. BAMHOST1 Hosts BAM components. BAMHOST2 Hosts BAM components. Note that it is possible to collapse the BAM servers so that they run on the same machines as the SOA servers. In this case BAMHOST1 and SOAHOST1 would be the same, as would BAMHOST2 and SOAHOST2. The cluster may include more than 2 servers and in this case we add SOAHOST3, SOAHOST4 etc as needed. My cluster has WEBHOST1, SOAHOST1 and BAMHOST1 all running on a single machine. Software Components The cluster will use the following software components. EDG Name is the name used for this machine in the EDG. Type is the type of component, generally a WebLogic component. Notes are a description of the purpose of the component. EDG Name Type Notes AdminServer Admin Server Domain Admin Server WLS_WSM1 Managed Server Web Services Manager Policy Manager Server WLS_WSM2 Managed Server Web Services Manager Policy Manager Server WLS_SOA1 Managed Server SOA/BPM Managed Server WLS_SOA2 Managed Server SOA/BPM Managed Server WLS_BAM1 Managed Server BAM Managed Server running Active Data Cache WLS_BAM2 Managed Server BAM Manager Server without Active Data Cache   Node Manager Will run on all hosts with WLS servers OHS1 Web Server Oracle HTTP Server OHS2 Web Server Oracle HTTP Server LB Load Balancer Load Balancer, not part of SOA Suite The above assumes a 2 node cluster. Network Configuration The SOA cluster requires an extensive amount of network configuration.  I would recommend assigning a private sub-net (internal IP addresses such as 10.x.x.x, 192.168.x.x or 172.168.x.x) to the cluster for use by addresses that only need to be accessible to the Load Balancer or other cluster members.  Section 2.2, "Network", of the EDG covers the network configuration in detail. EDG Name is the hostname used in the EDG. IP Name is the IP address name used in the EDG. Type is the type of IP address: Fixed is fixed to a single machine. Floating is assigned to one of several machines to allow for server migration. Virtual is assigned to a load balancer and used to distribute load across several machines. Host is the host where this IP address is active.  Note for floating IP addresses a range of hosts is given. Bound By identifies which software component will use this IP address. Scope shows where this IP address needs to be resolved. Cluster scope addresses only have to be resolvable by machines in the cluster, i.e. the machines listed in the previous section.  These addresses are only used for inter-cluster communication or for access by the load balancer. Internal scope addresses Notes are comments on why that type of IP is used. EDG Name IP Name Type Host Bound By Scope Notes ADMINVHN VIP1 Floating SOAHOST1-SOAHOSTn AdminServer Cluster Admin server, must be able to migrate between SOA server machines. SOAHOST1 IP1 Fixed SOAHOST1 NodeManager, WLS_WSM1 Cluster WSM Server 1 does not require server migration. SOAHOST2 IP2 Fixed SOAHOST1 NodeManager, WLS_WSM2 Cluster WSM Server 2 does not require server migration SOAHOST1VHN VIP2 Floating SOAHOST1-SOAHOSTn WLS_SOA1 Cluster SOA server 1, must be able to migrate between SOA server machines SOAHOST2VHN VIP3 Floating SOAHOST1-SOAHOSTn WLS_SOA2 Cluster SOA server 2, must be able to migrate between SOA server machines BAMHOST1 IP4 Fixed BAMHOST1 NodeManager Cluster   BAMHOST1VHN VIP4 Floating BAMHOST1-BAMHOSTn WLS_BAM1 Cluster BAM server 1, must be able to migrate between BAM server machines BAMHOST2 IP3 Fixed BAMHOST2 NodeManager, WLS_BAM2 Cluster BAM server 2 does not require server migration WEBHOST1 IP5 Fixed WEBHOST1 OHS1 Cluster   WEBHOST2 IP6 Fixed WEBHOST2 OHS2 Cluster   soa.mycompany.com VIP5 Virtual LB LB Public External access point to SOA cluster. admin.mycompany.com VIP6 Virtual LB LB Internal Internal access to WLS console and EM soainternal.mycompany.com VIP7 Virtual LB LB Internal Internal access point to SOA cluster Floating IP addresses are IP addresses that may be re-assigned between machines in the cluster.  For example in the event of failure of SOAHOST1 then WLS_SOA1 will need to be migrated to another server.  In this case VIP2 (SOAHOST1VHN) will need to be activated on the new target machine.  Once set up the node manager will manage registration and removal of the floating IP addresses with the exception of the AdminServer floating IP address. Note that if the BAMHOSTs and SOAHOSTs are the same machine then you can obviously share the hostname and fixed IP addresses, but you still need separate floating IP addresses for the different managed servers.  The hostnames don’t have to be the ones given in the EDG, but they must be distinct in the same way as the ETC names are distinct.  If the type is a fixed IP then if the addresses are the same you can use the same hostname, for example if you collapse the soahost1, bamhost1 and webhost1 onto a single machine then you could refer to them all as HOST1 and give them the same IP address, however SOAHOST1VHN can never be the same as BAMHOST1VHN because these are floating IP addresses. Notes on DNS IP addresses that are of scope “Cluster” just need to be in the hosts file (/etc/hosts on Linux, C:\Windows\System32\drivers\etc\hosts on Windows) of all the machines in the cluster and the load balancer.  IP addresses that are of scope “Internal” need to be available on the internal DNS servers, whilst IP addresses of scope “Public” need to be available on external and internal DNS servers. Shared File System At a minimum the cluster needs shared storage for the domain configuration, XA transaction logs and JMS file stores.  It is also possible to place the software itself on a shared server.  I strongly recommend that all machines have the same file structure for their SOA installation otherwise you will experience pain!  Section 2.3, "Shared Storage and Recommended Directory Structure", of the EDG covers the shared storage recommendations in detail. The following shorthand is used for locations: ORACLE_BASE is the root of the file system used for software and configuration files. MW_HOME is the location used by the installed SOA/BPM Suite installation.  This is also used by the web server installation.  In my installation it is set to <ORACLE_BASE>/SOA11gPS2. ORACLE_HOME is the location of the Oracle SOA components or the Oracle Web components.  This directory is installed under the the MW_HOME but the name is decided by the user at installation, default values are Oracle_SOA1 and Oracle_Web1.  In my installation they are set to <MW_HOME>/Oracle_SOA and <MW_HOME>/Oracle _WEB. ORACLE_COMMON_HOME is the location of the common components and is located under the MW_HOME directory.  This is always <MW_HOME>/oracle_common. ORACLE_INSTANCE is used by the Oracle HTTP Server and/or Oracle Web Cache.  It is recommended to create it under <ORACLE_BASE>/admin.  In my installation they are set to <ORACLE_BASE>/admin/Web1, <ORACLE_BASE>/admin/Web2 and <ORACLE_BASE>/admin/WC1. WL_HOME is the WebLogic server home and is always found at <MW_HOME>/wlserver_10.3. Key file locations are shown below. Directory Notes <ORACLE_BASE>/admin/domain_name/aserver/domain_name Shared location for domain.  Used to allow admin server to manually fail over between machines.  When creating domain_name provide the aserver directory as the location for the domain. In my install this is <ORACLE_BASE>/admin/aserver/soa_domain as I only have one domain on the box. <ORACLE_BASE>/admin/domain_name/aserver/applications Shared location for deployed applications.  Needs to be provided when creating the domain. In my install this is <ORACLE_BASE>/admin/aserver/applications as I only have one domain on the box. <ORACLE_BASE>/admin/domain_name/mserver/domain_name Either unique location for each machine or can be shared between machines to simplify task of packing and unpacking domain.  This acts as the managed server configuration location.  Keeping it separate from Admin server helps to avoid problems with the managed servers messing up the Admin Server. In my install this is <ORACLE_BASE>/admin/mserver/soa_domain as I only have one domain on the box. <ORACLE_BASE>/admin/domain_name/mserver/applications Either unique location for each machine or can be shared between machines.  Holds deployed applications. In my install this is <ORACLE_BASE>/admin/mserver/applications as I only have one domain on the box. <ORACLE_BASE>/admin/domain_name/soa_cluster_name Shared directory to hold the following   dd – deployment descriptors   jms – shared JMS file stores   fadapter – shared file adapter co-ordination files   tlogs – shared transaction log files In my install this is <ORACLE_BASE>/admin/soa_cluster. <ORACLE_BASE>/admin/instance_name Local folder for web server (OHS) instance. In my install this is <ORACLE_BASE>/admin/web1 and <ORACLE_BASE>/admin/web2. I also have <ORACLE_BASE>/admin/wc1 for the Web Cache I use as a load balancer. <ORACLE_BASE>/product/fmw This can be a shared or local folder for the SOA/BPM Suite software.  I used a shared location so I only ran the installer once. In my install this is <ORACLE_BASE>/SOA11gPS2 All the shared files need to be put onto a shared storage media.  I am using NFS, but recommendation for production would be a SAN, with mirrored disks for resilience. Collapsing Environments To reduce the hardware requirements it is possible to collapse the BAMHOST, SOAHOST and WEBHOST machines onto a single physical machine.  This will require more memory but memory is a lot cheaper than additional machines.  For environments that require higher security then stay with a separate WEBHOST tier as per the EDG.  Similarly for high volume environments then keep a separate set of machines for BAM and/or Web tier as per the EDG. Notes on Dev Environments In a dev environment it is acceptable to use a a single node (non-RAC) database, but be aware that the config of the data sources is different (no need to use multi-data source in WLS).  Typically in a dev environment we will collapse the BAMHOST, SOAHOST and WEBHOST onto a single machine and use a software load balancer.  To test a cluster properly we will need at least 2 machines. For my test environment I used Oracle Web Cache as a load balancer.  I ran it on one of the SOA Suite machines and it load balanced across the Web Servers on both machines.  This was easy for me to set up and I could administer it from a web based console.

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  • Creating reverse DNS entries which resolve [closed]

    - by Tiffany Walker
    Possible Duplicate: Reverse DNS - how to correctly configure for SMTP delivery I ran a DNS check and ended up with the following error: FAIL: Found reverse DNS entries which don't resolves IP-IP-IP-IP.HOST.DOMAIN.TLD ? ??? All IP's reverse DNS entries should resolve back to IP address (MX record's name -> IP -> IP Reverse -> IP). Many mail servers are configured to reject e-mails from IPs with inconsistent reverse DNS configuration. How do I properly configure and it so it goes to an IP?

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  • Layer 3 switch routing

    - by Yoshiwaan
    I need help moving over to using our layer 3 switch as the inter vlan routing device rather than our cisco router. I've mostly got it working but I've got stuck near the end and need some advice (I think I just need a bit of education on the subject really). Cur I have a Dell PowerConnect 7048 connecting to a Cisco 1841 router. I've got a few key excerpts from the configs to provide the key information. On the powerconnect I have the following: ip routing ip default-gateway 172.31.14.1 ip route 0.0.0.0 0.0.0.0 172.31.14.1 253 ! interface vlan 1 ip address 172.31.14.254 255.255.255.0 exit interface vlan 2 ip address 172.31.19.254 255.255.255.0 exit interface vlan 4 ip address 172.31.16.254 255.255.255.0 ! interface Gi1/0/1 description 'Link to L7Router01' switchport mode trunk switchport trunk allowed vlan except 3,7-4093 exit ! and on the Cisco the following: interface FastEthernet0/0 ip address 172.31.14.1 255.255.255.0 ip nat inside ip virtual-reassembly ! interface FastEthernet0/0.2 description Accounts VLAN encapsulation dot1Q 2 ip address 172.31.19.1 255.255.255.0 ip nat inside ip virtual-reassembly ! interface FastEthernet0/0.4 description Voice VLAN encapsulation dot1Q 4 ip address 172.31.16.1 255.255.255.0 ip nat inside ip virtual-reassembly ! So what I'm doing is moving clients over so that their default gateway is a 172.31.x.254 address rather than a 172.31.x.1 address. This works great for inter-vlan routing, I have no issues with this. The switch can also access the router no worries, and users on the 172.31.14.0/24 network can access all interfaces and sub-interfaces on the router, including 172.31.14.1. They can also access all of the interfaces that the router connects off to, no worries there. The problem I have is that users on the 172.31.16.0/24 and 172.31.19.0/24 subnets cannot access either 172.31.14.1 or any of the subnets the router connects to. They can, however, connect to BOTH of the sub interfaces on the router from either subnet. What am I missing here? Why can't the vlans connect to the non-sub interface on the router? Are tagged packets being sent to this interface?

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  • How can I display eth0's IP address at the login screen on Precise Server?

    - by Andrew Stebenne
    The server I administrate, inconveniently enough, has a dynamic IP address assigned by DHCP. The convenient counterbalance, though, is that it happens to be set up about two feet from where I sit. I know how to edit /etc/issue to show different values before the login prompt is delivered to the display, but I'd like to know if it's possible for /etc/issue to display the current IP address of eth0 (re-evaluated at boot time) so that I can see it and then ssh in without having to log in to run ifconfig.

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  • Can a NodeJS webserver handle multiple hostnames on the same IP?

    - by Matthew Patrick Cashatt
    I have just begun learning NodeJS and LOVE it so far. I have set up a Linux box to run it and, in learning to use the event-driven model, I am curious if I can use a common IP for multiple domain names. Could I point, for example, www.websiteA.com, www.websiteB.com, and www.websiteC.com all to the same IP (node webserver) and then route to the appropriate source files based on the request? Would this cause certain doom when it came to scaling to any reasonable size?

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  • IP address shows as a hyphen for failed remote desktop connections in Event Log

    - by PsychoDad
    I am trying to figure out why failed remote desktop connections (from Windows remote desktop) show the client ip address as a hyphen. Here is the event log I get when I type the wrong password for an account (the server is completely external to my home computer): <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" /> <EventID>4625</EventID> <Version>0</Version> <Level>0</Level> <Task>12544</Task> <Opcode>0</Opcode> <Keywords>0x8010000000000000</Keywords> <TimeCreated SystemTime="2012-03-25T19:22:14.694177500Z" /> <EventRecordID>1658501</EventRecordID> <Correlation /> <Execution ProcessID="544" ThreadID="12880" /> <Channel>Security</Channel> <Computer>[Delete for Security Purposes]</Computer> <Security /> </System> <EventData> <Data Name="SubjectUserSid">S-1-0-0</Data> <Data Name="SubjectUserName">-</Data> <Data Name="SubjectDomainName">-</Data> <Data Name="SubjectLogonId">0x0</Data> <Data Name="TargetUserSid">S-1-0-0</Data> <Data Name="TargetUserName">[Delete for Security Purposes]</Data> <Data Name="TargetDomainName">[Delete for Security Purposes]</Data> <Data Name="Status">0xc000006d</Data> <Data Name="FailureReason">%%2313</Data> <Data Name="SubStatus">0xc000006a</Data> <Data Name="LogonType">3</Data> <Data Name="LogonProcessName">NtLmSsp </Data> <Data Name="AuthenticationPackageName">NTLM</Data> <Data Name="WorkstationName">MyComputer</Data> <Data Name="TransmittedServices">-</Data> <Data Name="LmPackageName">-</Data> <Data Name="KeyLength">0</Data> <Data Name="ProcessId">0x0</Data> <Data Name="ProcessName">-</Data> <Data Name="IpAddress">-</Data> <Data Name="IpPort">-</Data> </EventData> </Event> Have found nothing online and am trying to stop terminal services attacks. Any insight is appreciated, I have found nothing online after several hours of seraching...

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  • DNS lookups failing somewhere between firewall and router

    - by TessellatingHeckler
    we have a setup of ADSL line - Cisco 837 ADSL router - Zyxel ZyWall 35 firewall/NAT - Switch == Intel load balanced NICS in a server. It has been fine for years, suddenly DNS resolution stopped working on the server. No changes that I know of, so I can't work backwards from there. It was configured with the ISP's DNS servers, neither network device does DNS relaying. Wireshark shows the request go out but nothing comes back. The server networking stack seems OK though, because if we query an internal DNS server on a remote site, that works. I can logon to the Cisco, and DNS resolves OK from the command line. I can logon to the ZyWall, and DNS does not resolve from the command line. So the problem seems to be the firewall, patch cable or router, yes? On the router: interface Ethernet0 ip address aaa.bbb.ccc.ddd 255.255.255.ddd ip tcp adjust-mss 1450 hold-queue 100 out On the firewall: DNS server set to 8.8.8.8 (Google's), DNS traffic allowed LAN-WAN. What else should I look for? Update: Following This guide I've got traffic logging on the Cisco. I have also got access to a public DNS server which I can run tcpdump on to see things from the other side. And as per the below comments, I've tested with Dig and see that DNS over TCP works, and over UDP does not. Currently: DNS request from the server using TCP shows up in the firewall log, and in the Cisco log, and in tcpdump on the DNS server, the answer comes back, it works fine. DNS request from the server using UDP shows up in the firewall log, and in the Cisco log, does NOT show in tcpdump on the DNS server, times out. DNS request from the cisco (using UDP) does show up in tcpdump on the DNS server, answer received, works fine. Ping requests from the server and the cisco to the DNS server show up in tcpdump on the DNS server. DNS request from the server using UDP does show up on the firewall. Summary: TCP seems fine throughought. UDP works over the ADSL and to the Cisco, and it works from the server to the Cisco, but it doesn't cross the Cisco properly, it seems. I did see the Cisco showing as connected at 10Mb/full-duplex internally, and the firewall showing as 100Mb/full-duplex externally. I have forced the firewall to 10Mb and rebooted both devices. That seemed to help get UDP traffic (server-firewall-cisco) instead of (server-firewall), but did not fix it. Update: Sanitized Cisco config: version 12.2 no service pad service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname cisco ! logging queue-limit 100 enable secret 5 {password} enable password 7 {password} ! ip subnet-zero ip domain name example.org ip name-server {nameserver_IP} ! ! ip audit notify log ip audit po max-events 100 no ftp-server write-enable ! interface Ethernet0 ip address {Inside_public_IP} 255.255.255.248 ip tcp adjust-mss 1460 hold-queue 100 out ! interface ATM0 no ip address no atm ilmi-keepalive pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 1 ! dsl operating-mode auto ! interface Dialer1 ip unnumbered Ethernet0 encapsulation ppp dialer pool 1 dialer idle-timeout 0 dialer persistent no cdp enable ppp chap hostname {ADSL_Username} ppp chap password 7 {ADSL_Password} ! ip classless ip route 0.0.0.0 0.0.0.0 Dialer1 no ip http server no ip http secure-server ! access-list 23 permit {IP} dialer-list 1 protocol ip permit no cdp run snmp-server enable traps tty ! {con, vty} end

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  • TCP stops sending weirdly.

    - by Utoah
    In case to find out the cause of TCP retransmits on my Linux (RHEL, kernel 2.6.18) servers connecting to the same switch. I had a client-server pair send "Hello" to each other every 200us and captured the packets with tcpdump on the client machine. The command I used to mimic client and server are: while [ 0 ]; do echo "Hello"; usleep 200; done | nc server 18510 while [ 0 ]; do echo "Hello"; usleep 200; done | nc -l 18510 When the server machine was busy serving some other requests, the client suffered from abrupt retransmits occasionally. But the output of tcpdump seemed irrational. 16:04:58.898970 IP server.18510 > client.34533: P 4531:4537(6) ack 3204 win 123 <nop,nop,timestamp 1923778643 3452833828> 16:04:58.901797 IP client.34533 > server.18510: P 3204:3210(6) ack 4537 win 33 <nop,nop,timestamp 3452833831 1923778643> 16:04:58.901855 IP server.18510 > client.34533: P 4537:4549(12) ack 3210 win 123 <nop,nop,timestamp 1923778646 3452833831> 16:04:58.903871 IP client.34533 > server.18510: P 3210:3216(6) ack 4549 win 33 <nop,nop,timestamp 3452833833 1923778646> 16:04:58.903950 IP server.18510 > client.34533: P 4549:4555(6) ack 3216 win 123 <nop,nop,timestamp 1923778648 3452833833> 16:04:58.905796 IP client.34533 > server.18510: P 3216:3222(6) ack 4555 win 33 <nop,nop,timestamp 3452833835 1923778648> 16:04:58.905860 IP server.18510 > client.34533: P 4555:4561(6) ack 3222 win 123 <nop,nop,timestamp 1923778650 3452833835> 16:04:58.908903 IP client.34533 > server.18510: P 3222:3228(6) ack 4561 win 33 <nop,nop,timestamp 3452833838 1923778650> 16:04:58.908966 IP server.18510 > client.34533: P 4561:4567(6) ack 3228 win 123 <nop,nop,timestamp 1923778653 3452833838> 16:04:58.911855 IP client.34533 > server.18510: P 3228:3234(6) ack 4567 win 33 <nop,nop,timestamp 3452833841 1923778653> 16:04:59.112573 IP client.34533 > server.18510: P 3228:3234(6) ack 4567 win 33 <nop,nop,timestamp 3452834042 1923778653> 16:04:59.112648 IP server.18510 > client.34533: P 4567:5161(594) ack 3234 win 123 <nop,nop,timestamp 1923778857 3452834042> 16:04:59.112659 IP client.34533 > server.18510: P 3234:3672(438) ack 5161 win 35 <nop,nop,timestamp 3452834042 1923778857> 16:04:59.114427 IP server.18510 > client.34533: P 5161:5167(6) ack 3672 win 126 <nop,nop,timestamp 1923778858 3452834042> 16:04:59.114439 IP client.34533 > server.18510: P 3672:3678(6) ack 5167 win 35 <nop,nop,timestamp 3452834044 1923778858> 16:04:59.116435 IP server.18510 > client.34533: P 5167:5173(6) ack 3678 win 126 <nop,nop,timestamp 1923778860 3452834044> 16:04:59.116444 IP client.34533 > server.18510: P 3678:3684(6) ack 5173 win 35 <nop,nop,timestamp 3452834046 1923778860> Packet 3228:3234(6) from client was retransmitted due to ack timeout. What I could not understand was that the client machine did not send out any packets after the first 3228:3234(6) packets was sent. The server machine had advertised a window (scaled) large enough. The data transfer up to the retransmit was fine which meant no slow start should be in action. What can cause the client machine to stop sending until the packet timed out? BTW, I am unable to run tcpdump on the server machine.

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  • WCF Service behind F5 Bigip endpoint issue

    - by John
    we have WCF services hosted on IIS in 4 web servers, these web servers are behind the F5 Bigip load balancing system, SSL accelarator. When the client calls the service it'll be calling https myserver.com/myservices.svc but actually .svc will be in different servers like http web1.mysever.com/myservices.svc, http web2.mysever.com/myservices.svc, etc how do we handle this issue?

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  • Scrubbing IPv4 dotted-quad addresses in SQL

    - by pilcrow
    Given a table containing dotted quad IPv4 addresses stored as a VARCHAR(15), for example: ipv4 -------------- 172.16.1.100 172.16.50.5 172.30.29.28 what's a convenient way to SELECT all "ipv4" fields with the final two octets scrubbed, so that the above would become: ipv4 ------------ 172.16.x.y 172.16.x.y 172.30.x.y Target RDBMS is postgresql 8.4, but the more portable the better! Thanks.

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  • urllib2 in Python 2.6.4: Any way to override windows hosts file?

    - by mikez302
    I am using the urllib2 module in Python 2.6.4, running in Windows XP, to access a URL. I am making a post request, that does not involve cookies or https or anything too complicated. The domain is redirected in my C:\WINDOWS\system32\drivers\etc\hosts file. However, I would like the request from urllib2 to go to the "real" domain and ignore the entry in the hosts file. Is there any easy and practical way to do this?

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