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• VLAN support on Juniper EX - 2200 switches

  - by liv2hak

  I have 6 Juniper switches (EX - 2200) connected to each other as shown in the network topology below. I have two PC's that I am using PC1 - (used for configuring the 6 switches via minicom) PC2 - to monitor the traffic between the switches via the Ports that are marked with arrows in the diagram. STEP 1: I create a new vlan On Switch 3 (SW3) that includes Port 12 and Port 22. I also assign l3-interface to the vlan (vlan_2) with ip address - 192.168.1.7. Now I plug-in Port 0 of Switch 3 on PC2. Now I try pinging 192.168.1.7 from PC2 (192.168.1.10) I want to know what will happen? My postulation is that I will not be able to ping SW3 from PC2.This is because SW3 (Port 12 and Port 22) is a part of a vlan_2 and vlan_2 logically breaks up broadcast domains and so 192.168.1.7 will not be reachable from 192.168.1.10. Now I have an l3-interface on SW1 with IP 192.168.1.1 using default vlan( vlan-id 0). Similarly I have enabled IP on SW2 - 192.168.1.2 SW3 - 192.168.1.3 SW4 - 192.168.1.4 SW5 - 192.168.1.5 SW6 - 192.168.1.6 all using default vlan. Now I plug in Port 12 of SW3 (blue cable) into the PC2. I try to ping 192.168.1.1 from PC2. What will happen at this stage.? My postulation is that I will be able to ping switch 1.Is this correct? Also another question is that can a single port on a Switch be added multiple VLANS? I am a beginner at network configuration? Any help would be highly appreciated. (Please ignore the CISCO symbol on the switches in the diagram.All swithes are Junper EX 22-00.)

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• Bad Blocks Exist in Virtual Device PERC H700 Integrated

  - by neoX

  I have a DELL server with PERC H700 Integrated controller. I've made RAID5 with 12 harddrives and the virtual device is in Optimal state, but I receive such errors under linux: sd 0:2:0:0: [sda] Unhandled error code sd 0:2:0:0: [sda] Result: hostbyte=0x07 driverbyte=0x00 sd 0:2:0:0: [sda] CDB: cdb[0]=0x88: 88 00 00 00 00 07 22 50 bd 98 00 00 00 08 00 00 end_request: I/O error, dev sda, sector 30640487832 sd 0:2:0:0: [sda] Unhandled error code sd 0:2:0:0: [sda] Result: hostbyte=0x07 driverbyte=0x00 sd 0:2:0:0: [sda] CDB: cdb[0]=0x88: 88 00 00 00 00 07 22 50 bd 98 00 00 00 08 00 00 end_request: I/O error, dev sda, sector 30640487832 sd 0:2:0:0: [sda] Unhandled error code sd 0:2:0:0: [sda] Result: hostbyte=0x07 driverbyte=0x00 sd 0:2:0:0: [sda] CDB: cdb[0]=0x88: 88 00 00 00 00 07 22 50 bc e0 00 00 01 00 00 00 end_request: I/O error, dev sda, sector 30640487648 But all disk are in Firmware state: Online, Spun Up. Also there is not a single ATA read or write error in any disk in the raid (I check them with smartctl -a -d sat+megaraid,N -H /dev/sda). The only strange thing is in the output in megacli: megacli -LDInfo -L0 -a0 ... Bad Blocks Exist: Yes How could there be bad blocks in a Virtual Drive, which is in optimal state and no disk is broken or even with a single error? I tried "Consistency Check", but it finished successfully and the errors are still in dmesg. Could Someone help me to figure it out what is wrong with my raid?

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• Ripping a home video VCD on Linux or Windows with VLC or otherwise

  - by user259774

  I have a VCD with 22 minutes of video on it. I would like to retain this footage and throw away the VCD. I can play the whole thing with VLC ("open disc - vcd - /dev/sr0 - play"): all 22 minutes of the main track. I don't believe there's any other content aside from the main track. I can seek to anywhere I want to within the 22 minute track. If I mount /dev/sr0 /media/vcd and then try to copy the only file from the MPEGAV folder, I get an I/O error, with an empty destination file. VLC has a "convert" option in addition to "play". When I use this I actually get a good OGG file back, after it runs through the video in painful real-time. I guess it dubs it frame-by-frame. But the file is only 10 minutes long, leaving 12 minutes off of the track. Handbrake doesn't detect it's track titles, unfortunately. I don't know if I should start getting involved with GNU ddrescue or if it's because VCDs somehow encode their data sectors differently. Anyway, I'm in way over my head and if anyone knows how I could get that video track off the thing, feel free to share! Edit: I should note that I also have access to a Windows computer

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• configuring vsftpd anonymous upload. Creates files but freezes at 0 bytes

  - by Wayne

  vsftpd on ubuntu after sudo apt-get install vsftpd Then did configuration as in the attached /etc/vsftpd.conf file. Anonymous ftp allows cd to the upload directly and allows put myfile.txt which gets created on the server but then the client hangs and never proceeds. The file on the server remains at 0 bytes. Here's the folders and permissions: root@support:/home/ftp# ls -ld . drwxr-xr-x 3 root root 4096 Jun 22 00:00 . root@support:/home/ftp# ls -ld pub drwxr-xr-x 3 root root 4096 Jun 21 23:59 pub root@support:/home/ftp# ls -ld pub/upload drwxr-xr-x 2 ftp ftp 4096 Jun 22 00:06 pub/upload root@support:/home/ftp# Here's the vsftpd.conf file: root@support:/home/ftp# grep -v '#' /etc/vsftpd.conf listen=YES anonymous_enable=YES write_enable=YES anon_upload_enable=YES dirmessage_enable=YES xferlog_enable=YES anon_root=/home/ftp/pub/ connect_from_port_20=YES chown_uploads=YES chown_username=ftp nopriv_user=ftp secure_chroot_dir=/var/run/vsftpd pam_service_name=vsftpd rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key Here's a file example that attempted to upload: root@support:/home/ftp/pub/upload# ls -l total 0 -rw------- 1 ftp nogroup 0 Jun 22 00:06 build.out This is the client attempting to upload...it is frozen at this point: $ ftp 173.203.89.78 Connected to 173.203.89.78. 220 (vsFTPd 2.0.6) User (173.203.89.78:(none)): ftp 331 Please specify the password. Password: 230 Login successful. ftp> put build.out 200 PORT command successful. Consider using PASV. 553 Could not create file. ftp> cd upload 250 Directory successfully changed. ftp> put build.out 200 PORT command successful. Consider using PASV. 150 Ok to send data.

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• iptables configuration to work with apache2 mod_proxy

  - by swdalex

  Hello! I have iptables config like this: iptables -F INPUT iptables -F OUTPUT iptables -F FORWARD iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P FORWARD DROP iptables -A INPUT -p tcp --dport 22 -j ACCEPT iptables -A OUTPUT -p tcp --sport 22 -j ACCEPT iptables -A INPUT -p tcp --dport 80 -j ACCEPT iptables -A OUTPUT -p tcp --sport 80 -j ACCEPT iptables -A INPUT -p tcp --dport 443 -j ACCEPT iptables -A OUTPUT -p tcp --sport 443 -j ACCEPT Also, I have apache virtual host: <VirtualHost *:80> ServerName wiki.myite.com <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass / http://localhost:8901/ ProxyPassReverse / http://localhost:8901/ <Location /> Order allow,deny Allow from all </Location> </VirtualHost> My primary domain www.mysite.com is working well with this configuration (I don't use proxy redirect on it). But my virtual host wiki.mysite.com is not responding. Please, help me to setup iptables config to allow wiki.mysite.com working too. I think, I need to setup iptables FORWARDING options, but I don't know how. update: I have 1 server with 1 IP. On server I have apache2.2 on 80 port. Also I have tomcat6 on 8901 port. In apache I setup to forwarding domain wiki.mysite.com to tomcat (mysite.com:8901). I want to secure my server by disabling all ports, except 80, 22 and 443.

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• SOCKS5 proxy only, git wants to use ssh to xx.xx.xx.xx - forward? - mac os

  - by AlexAtNet

  I have SOCKS5 proxy configured and want to work with the git repository, originally cloned from ssh:... So when it tries to connect the error "Network is unreachable" appears. There are a few possible solutions: Use GIT URL rewriting and use https:// with proxy option. Probably should work well for github repositories. Use port forwarding and something like iptables/ipfw to rewrite address xx.xx.xx.xx:22 to 127.0.0.1:10yyy I'm trying to do #2. I have limited knowledge in this area, but know that I should use something like iptables. But then I discovered that on a Mac I should use ipfw. And then in the ipfw man page it told me "This utility is DEPRECATED. Please use pfctl(8) instead". So what I want to do is to rewrite xx.xx.xx.xx:22 to 127.0.0.1:10yyy and remove this rewriting. As I read, the pf.conf line should be rdr proto tcp from 127.0.0.1 to xx.xx.xx.xx port 22 -> 127.0.0.1 port 10yyy But how to add (and remove) this rule from command line?

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• ssh timeout issue connecting to an EC2 instance on OS X

  - by mamusr

  I am new to AWS and not a networking expert but curious to know more about it. I created a VPC with a public subnet only. Then i created an EC2 instance using an Ubuntu 14.04 64-bit pv AMI image (ami-e84d8480) as well generating the key pair needed to connect to it through ssh. I followed amazon's instructions to connect to an EC2 instance via ssh which did not work. Here is my attempted input and debug log: Running on OS X 10.9.4 user$ ssh -vvv -i key.pem [email protected] OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: /etc/ssh_config line 102: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to xxx.xxx.xxx.xxx [xxx.xxx.xxx.xxx] port 22. debug1: connect to address xxx.xxx.xxx.xxx port 22: Operation timed out ssh: connect to host xxx.xxx.xxx.xxx port 22: Operation timed out To attempt to resolve the issue: I enabled the SSH port. Tried different usernames other than ubuntu, like ec2-user and root. Initially set an inbound ssh rule in the security group to connect to only my ip address. When that did not work, i changed it to allow any ip to connect. But those actions did not fix the problem. Here are my guesses as to what i am missing in getting the EC2 instance connection to work. My etc/ssh_config file may be preventing the connection from taking place. I may have missed an important networking detail when setting up the VPC. I do not have a public ip address specified for the instance. I am connecting through the private ip address. My questions for the community: Am i going about it the wrong way connecting to the instance through the private ip address? if so, do i need to specify a public ip address for it to connect or some other method?

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• A fatal exception 0E occured at 0028:xxxxxx in VxD IOS(01)

  - by winlin

  I get a blue screen of death in my windows 98 machine every time I boot it. I can't reach to my desktop. The error is like this: A fatal exception 0E occured at 0028:C003CC2F in VxD IOS(01) + 0000156B This was called from 0028:C0082E60 in VxD VKD(01) + 000001D0 I have to then give it a three finger salute to restart the system. There is no other way to shut down the system at this point except pressing the CPU power button. What could be the problem? My windows system.ini is: [boot] oemfonts.fon=vgaoem.fon shell=Explorer.exe system.drv=system.drv drivers=mmsystem.dll power.drv user.exe=user.exe gdi.exe=gdi.exe sound.drv=mmsound.drv dibeng.drv=dibeng.dll comm.drv=comm.drv mouse.drv=mouse.drv keyboard.drv=keyboard.drv *DisplayFallback=0 fonts.fon=vgasys.fon fixedfon.fon=vgafix.fon 386Grabber=vgafull.3gr display.drv=pnpdrvr.drv [keyboard] keyboard.dll= oemansi.bin= subtype= type=4 [boot.description] system.drv=Standard PC mouse.drv=Standard mouse keyboard.typ=Standard 101/102-Key or Microsoft Natural Keyboard aspect=100,96,96 display.drv=Standard PCI Graphics Adapter (VGA) [386Enh] ;device=tddebug.386 ;device=D:\TC\TASM\BIN\WINDPMI.386 ebios=*ebios woafont=dosapp.fon mouse=*vmouse, msmouse.vxd device=*dynapage device=*vcd device=*vpd device=*int13 keyboard=*vkd display=*vdd,*vflatd ConservativeSwapfileUsage=0 Paging=on [NonWindowsApp] TTInitialSizes=4 5 6 7 8 9 10 11 12 13 14 15 16 18 20 22 [power.drv] [drivers] wavemapper=*.drv MSACM.imaadpcm=*.acm ;msvideo.STV680=STV680sg.drv midi=mmsystem.dll wave=mmsystem.dll MSACM.msadpcm=*.acm [iccvid.drv] [mciseq.drv] [mci] cdaudio=mcicda.drv sequencer=mciseq.drv waveaudio=mciwave.drv avivideo=mciavi.drv videodisc=mcipionr.drv vcr=mcivisca.drv MPEGVideo=mciqtz.drv MPEGVideo2=mciqtz.drv [vcache] [MSNP32] [DISPLAY] BusThrottle=1 [network] SSID=1438661605 [vicax] msacm711=74603 msacm811=148933 msacm911=42405 [Sessew] VideoManufacturer=Standard VGA VideoBoard=Standard Display Adapter (VGA) MouseType=0 VidType=0 Mono=0 Ddraw=1 [drivers32] msacm.lhacm=lhacm.acm VIDC.IV50=ir50_32.dll msacm.iac2=C:\WINDOWS\SYSTEM\IAC25_32.AX VIDC.YUY2=msyuv.dll VIDC.UYVY=msyuv.dll VIDC.YVYU=msyuv.dll msacm.msaudio1=msaud32.acm msacm.vorbis=vorbis.acm msacm.l3acm=C:\WINDOWS\SYSTEM\L3CODECA.ACM msacm.sl_anet=sl_anet.acm VIDC.TSCC=tsccvid.dll VIDC.IV41=IR41_32.AX vidc.mpg4=mpg4c32.dll vidc.mp43=mpg4c32.dll msacm.voxacm160=vct3216.acm MSACM.msadpcm=msadp32.acm [TTFontDimenCache] 0 4=2 4 0 5=3 5 0 6=4 6 0 7=4 7 0 8=5 8 0 9=5 9 0 10=6 10 0 11=7 11 0 12=7 12 0 13=8 13 0 14=8 14 0 15=9 15 0 16=10 16 0 18=11 18 0 20=12 20 0 22=13 22

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• What command should be used to connect via SSH through squid proxy?

  - by Raul Cardoso

  I have set up a Squid HTTP Proxy (in centOS) and intended to use it also for ssh connections. Managed to configure putty (in a windows client) to use this proxy while connecting by ssh. Confirmed in the "target host" that the ssh connection was coming from Proxy server ip instead of the windows client IP. Used: targethost: 22 for ssh proxyserv: 3128 for proxy (along with proxy credentials) I'm now having problems connecting to the "target host" using Ubuntu and the same proxy server. I have tried the following: me@mycomp:~$ connect-proxy -H test@proxyserv:3128 targethost 22 Enter proxy authentication password for test@proxyserv: SSH-2.0-OpenSSH_6.2p2 Ubuntu-6 It hangs in last line, expecting some input. All attempts resulted in a "Protocol mismatch." error. Putty successfully connects to the http proxy and sends credentials, showing me ssh login right away. - How to do (with commands in Ubuntu) the same putty does? - Is there any other way than connect-proxy command to do this? Edit: Also tried the following with same result ("Protocol mismatch") me@mycomp:~$ connect-proxy -H test@proxyserv:3128 targethost 22 ssh -l myshel_login Thanks in advance Edit: Solution details (thanks to NickW pointing the right way) installed corkscrew and added to ssh_config Host targethost ProxyCommand corkscrew proxyserv 3128 %h %p /etc/ssh/proxypass created proxypass file login:password Restarted ssh and used a simple ssh command ssh mylogin@targethost (ssh password was asked as usual)

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• How to prevent samba from holding a file lock after a client disconnects?

  - by Jean-Francois Chevrette

  Here I have a Samba server (Debian 5.0) thats is configured to host Windows XP profiles. Clients connects to this server and work on their profiles directly on the samba share (the profile is not copied locally). Every now and then, a client may not shutdown properly and thus Windows does not free the file locks. When looking at the samba locking table, we can see that many files are still locked even though the client is not connected anymore. In our case, this seems to occur with lockfiles created by Mozilla Thunderbird and Firefox. Here's an example of the samba locking table: # smbstatus -L | grep DENY_ALL | head -n5 Pid Uid DenyMode Access R/W Oplock SharePath Name Time -------------------------------------------------------------------------------------------------- 15494 10345 DENY_ALL 0x3019f RDWR EXCLUSIVE+BATCH /home/CORP/user1 app.profile/user1.thunderbird/parent.lock Mon Nov 22 07:12:45 2010 18040 10454 DENY_ALL 0x3019f RDWR EXCLUSIVE+BATCH /home/CORP/user2 app.profile/user2.thunderbird/parent.lock Mon Nov 22 11:20:45 2010 26466 10056 DENY_ALL 0x3019f RDWR EXCLUSIVE+BATCH /home/CORP/user3 app.profile/user3.firefox/parent.lock Mon Nov 22 08:48:23 2010 We can see that the files were opened by Windows and imposed a DENY_ALL lock. Now when a client reconnects to this share and tries to open those files, samba says that they are locked and denies access. Is there any way to work around this situation or am I missing something? Edit: We would like to avoid disabling file locks on the samba server because there are good reasons to have those enabled.

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• Debian: Should I add vlan interface into bridge for KVM?

  - by javano

  I am setting up a Debian Squeeze box as a KVM host. I want to add multiple interfaces to each KVM guest so I want them to be on different VLANs. After reading about this, I believe the best method is to add multiple logical VLAN (sub)-interfaces to the physical NICs and then create a bridge adapter for each VLAN interace, and assign each bridge as a NIC for KVM guests. Does this make good sense, or madness? Do I have to use bridged interfaces with KVM like this? Can't I just add eth1.xx and eth1.yy to my interfaces config below and then configure those directly as bridged KVM guest NICs? If so, how should this look in the interfaces config file below? user@host:~$ cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # Management Interface auto eth0 iface eth0 inet static address 172.22.0.31 netmask 255.255.255.0 gateway 172.22.0.1 # Interface for guest VMs auto eth1 # Guest1 : Use VLAN 117 auto eth1.117 iface eth1.117 inet manual # Set up br1 for guest 1, bridging with vlan 117 auto br1.117 iface br1.117 inet manual bridge_ports eth1.117 bridge_stp off user@host:~$ uname -a Linux hostname 3.4.9 #1 SMP Wed Aug 22 19:08:46 BST 2012 x86_64 GNU/Linux UPDATE I would really like it if someone could clarify the config for me, as I have also seen the above configured with this syntax, so I don't see why one would be preferred over the other; # Interface for guest VMs auto eth1 allow-hotplug eth1 iface eth1 inet static # Vlan 117 for guest 1 auto vlan 117 iface vlan111 inet static vlan_raw_device eth1 # Guest 1 : NIC 1 auto br1.117 iface br1.117 inet manual bridge_ports vlan117 bridge_stp off

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• CentOS 6 LEMP update - dependency error issue

  - by Latheesan Kanes

  I have setup a LEMP server following the guide Install Nginx/PHP-FPM on Fedora 20/19, CentOS/RHEL 6.5/5.10. It's been a while since I did the setup, so I wanted to grab the latest updates from REMI repository. I ran the following command: yum --enablerepo=remi,remi-php55 update I now get these dependency related errors: # yum --enablerepo=remi update Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.nl.leaseweb.net * epel: mirror.1000mbps.com * extras: mirror.nl.leaseweb.net * remi: remi.schlundtech.de * updates: centos.mirror1.spango.com Setting up Update Process Resolving Dependencies --> Running transaction check ---> Package chkconfig.x86_64 0:1.3.49.3-2.el6 will be updated ---> Package chkconfig.x86_64 0:1.3.49.3-2.el6_4.1 will be an update ---> Package glibc.x86_64 0:2.12-1.107.el6_4.4 will be updated ---> Package glibc.x86_64 0:2.12-1.107.el6_4.5 will be an update ---> Package glibc-common.x86_64 0:2.12-1.107.el6_4.4 will be updated ---> Package glibc-common.x86_64 0:2.12-1.107.el6_4.5 will be an update ---> Package gnupg2.x86_64 0:2.0.14-4.el6 will be updated ---> Package gnupg2.x86_64 0:2.0.14-6.el6_4 will be an update ---> Package iputils.x86_64 0:20071127-17.el6_4 will be updated ---> Package iputils.x86_64 0:20071127-17.el6_4.2 will be an update ---> Package kernel.x86_64 0:2.6.32-358.23.2.el6 will be installed ---> Package kernel-firmware.noarch 0:2.6.32-358.18.1.el6 will be updated ---> Package kernel-firmware.noarch 0:2.6.32-358.23.2.el6 will be an update ---> Package libgcrypt.x86_64 0:1.4.5-9.el6_2.2 will be updated ---> Package libgcrypt.x86_64 0:1.4.5-11.el6_4 will be an update ---> Package mysql-libs.x86_64 0:5.1.69-1.el6_4 will be updated --> Processing Dependency: libmysqlclient.so.16()(64bit) for package: 2:postfix-2.6.6-2.2.el6_1.x86_64 --> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: 2:postfix-2.6.6-2.2.el6_1.x86_64 ---> Package mysql-libs.x86_64 0:5.5.34-1.el6.remi will be an update ---> Package nginx.x86_64 0:1.4.2-1.el6.ngx will be updated ---> Package nginx.x86_64 0:1.4.3-1.el6.ngx will be an update ---> Package php-pear.noarch 1:1.9.4-20.el6.remi will be updated ---> Package php-pear.noarch 1:1.9.4-23.el6.remi will be an update ---> Package php-pecl-jsonc.x86_64 0:1.3.2-1.el6.remi.1 will be updated ---> Package php-pecl-jsonc.x86_64 0:1.3.2-2.el6.remi will be an update --> Processing Dependency: php(zend-abi) = 20100525-x86-64 for package: php-pecl-jsonc-1.3.2-2.el6.remi.x86_64 --> Processing Dependency: php(api) = 20100412-x86-64 for package: php-pecl-jsonc-1.3.2-2.el6.remi.x86_64 ---> Package php-pecl-mongo.x86_64 0:1.4.3-1.el6.remi.1 will be updated ---> Package php-pecl-mongo.x86_64 0:1.4.4-1.el6.remi will be an update --> Processing Dependency: php(zend-abi) = 20100525-x86-64 for package: php-pecl-mongo-1.4.4-1.el6.remi.x86_64 --> Processing Dependency: php(api) = 20100412-x86-64 for package: php-pecl-mongo-1.4.4-1.el6.remi.x86_64 ---> Package php-pecl-sqlite.x86_64 0:2.0.0-0.3.svn313074.el6.remi.5 will be updated ---> Package php-pecl-sqlite.x86_64 0:2.0.0-0.4.svn332053.el6.remi.5.4 will be an update --> Processing Dependency: php(zend-abi) = 20100525-x86-64 for package: php-pecl-sqlite-2.0.0-0.4.svn332053.el6.remi.5.4.x86_64 --> Processing Dependency: php(api) = 20100412-x86-64 for package: php-pecl-sqlite-2.0.0-0.4.svn332053.el6.remi.5.4.x86_64 ---> Package postgresql-libs.x86_64 0:8.4.13-1.el6_3 will be updated ---> Package postgresql-libs.x86_64 0:8.4.18-1.el6_4 will be an update ---> Package remi-release.noarch 0:6-2.el6.remi will be updated ---> Package remi-release.noarch 0:6.4-1.el6.remi will be an update ---> Package rsync.x86_64 0:3.0.6-9.el6 will be updated ---> Package rsync.x86_64 0:3.0.6-9.el6_4.1 will be an update ---> Package selinux-policy.noarch 0:3.7.19-195.el6_4.12 will be updated ---> Package selinux-policy.noarch 0:3.7.19-195.el6_4.18 will be an update ---> Package selinux-policy-targeted.noarch 0:3.7.19-195.el6_4.12 will be updated ---> Package selinux-policy-targeted.noarch 0:3.7.19-195.el6_4.18 will be an update ---> Package setup.noarch 0:2.8.14-20.el6 will be updated ---> Package setup.noarch 0:2.8.14-20.el6_4.1 will be an update ---> Package tzdata.noarch 0:2013c-2.el6 will be updated ---> Package tzdata.noarch 0:2013g-1.el6 will be an update ---> Package xinetd.x86_64 2:2.3.14-38.el6 will be updated ---> Package xinetd.x86_64 2:2.3.14-39.el6_4 will be an update --> Running transaction check ---> Package compat-mysql51.x86_64 0:5.1.54-1.el6.remi will be installed ---> Package php-pecl-jsonc.x86_64 0:1.3.2-2.el6.remi will be an update --> Processing Dependency: php(zend-abi) = 20100525-x86-64 for package: php-pecl-jsonc-1.3.2-2.el6.remi.x86_64 --> Processing Dependency: php(api) = 20100412-x86-64 for package: php-pecl-jsonc-1.3.2-2.el6.remi.x86_64 ---> Package php-pecl-mongo.x86_64 0:1.4.4-1.el6.remi will be an update --> Processing Dependency: php(zend-abi) = 20100525-x86-64 for package: php-pecl-mongo-1.4.4-1.el6.remi.x86_64 --> Processing Dependency: php(api) = 20100412-x86-64 for package: php-pecl-mongo-1.4.4-1.el6.remi.x86_64 ---> Package php-pecl-sqlite.x86_64 0:2.0.0-0.4.svn332053.el6.remi.5.4 will be an update --> Processing Dependency: php(zend-abi) = 20100525-x86-64 for package: php-pecl-sqlite-2.0.0-0.4.svn332053.el6.remi.5.4.x86_64 --> Processing Dependency: php(api) = 20100412-x86-64 for package: php-pecl-sqlite-2.0.0-0.4.svn332053.el6.remi.5.4.x86_64 --> Finished Dependency Resolution Error: Package: php-pecl-jsonc-1.3.2-2.el6.remi.x86_64 (remi) Requires: php(zend-abi) = 20100525-x86-64 Installed: php-common-5.5.4-1.el6.remi.x86_64 (@remi-test) php(zend-abi) = 20121212-64 Available: php-common-5.3.3-22.el6.x86_64 (base) php(zend-abi) = 20090626 Available: php-common-5.3.3-23.el6_4.x86_64 (updates) php(zend-abi) = 20090626 Available: php-common-5.4.21-1.el6.remi.x86_64 (remi) php(zend-abi) = 20100525-x86-64 Available: php-common-5.4.21-2.el6.remi.x86_64 (remi) php(zend-abi) = 20100525-x86-64 Error: Package: php-pecl-mongo-1.4.4-1.el6.remi.x86_64 (remi) Requires: php(zend-abi) = 20100525-x86-64 Installed: php-common-5.5.4-1.el6.remi.x86_64 (@remi-test) php(zend-abi) = 20121212-64 Available: php-common-5.3.3-22.el6.x86_64 (base) php(zend-abi) = 20090626 Available: php-common-5.3.3-23.el6_4.x86_64 (updates) php(zend-abi) = 20090626 Available: php-common-5.4.21-1.el6.remi.x86_64 (remi) php(zend-abi) = 20100525-x86-64 Available: php-common-5.4.21-2.el6.remi.x86_64 (remi) php(zend-abi) = 20100525-x86-64 Error: Package: php-pecl-jsonc-1.3.2-2.el6.remi.x86_64 (remi) Requires: php(api) = 20100412-x86-64 Installed: php-common-5.5.4-1.el6.remi.x86_64 (@remi-test) php(api) = 20121113-64 Available: php-common-5.3.3-22.el6.x86_64 (base) php(api) = 20090626 Available: php-common-5.3.3-23.el6_4.x86_64 (updates) php(api) = 20090626 Available: php-common-5.4.21-1.el6.remi.x86_64 (remi) php(api) = 20100412-x86-64 Available: php-common-5.4.21-2.el6.remi.x86_64 (remi) php(api) = 20100412-x86-64 Error: Package: php-pecl-sqlite-2.0.0-0.4.svn332053.el6.remi.5.4.x86_64 (remi) Requires: php(zend-abi) = 20100525-x86-64 Installed: php-common-5.5.4-1.el6.remi.x86_64 (@remi-test) php(zend-abi) = 20121212-64 Available: php-common-5.3.3-22.el6.x86_64 (base) php(zend-abi) = 20090626 Available: php-common-5.3.3-23.el6_4.x86_64 (updates) php(zend-abi) = 20090626 Available: php-common-5.4.21-1.el6.remi.x86_64 (remi) php(zend-abi) = 20100525-x86-64 Available: php-common-5.4.21-2.el6.remi.x86_64 (remi) php(zend-abi) = 20100525-x86-64 Error: Package: php-pecl-mongo-1.4.4-1.el6.remi.x86_64 (remi) Requires: php(api) = 20100412-x86-64 Installed: php-common-5.5.4-1.el6.remi.x86_64 (@remi-test) php(api) = 20121113-64 Available: php-common-5.3.3-22.el6.x86_64 (base) php(api) = 20090626 Available: php-common-5.3.3-23.el6_4.x86_64 (updates) php(api) = 20090626 Available: php-common-5.4.21-1.el6.remi.x86_64 (remi) php(api) = 20100412-x86-64 Available: php-common-5.4.21-2.el6.remi.x86_64 (remi) php(api) = 20100412-x86-64 Error: Package: php-pecl-sqlite-2.0.0-0.4.svn332053.el6.remi.5.4.x86_64 (remi) Requires: php(api) = 20100412-x86-64 Installed: php-common-5.5.4-1.el6.remi.x86_64 (@remi-test) php(api) = 20121113-64 Available: php-common-5.3.3-22.el6.x86_64 (base) php(api) = 20090626 Available: php-common-5.3.3-23.el6_4.x86_64 (updates) php(api) = 20090626 Available: php-common-5.4.21-1.el6.remi.x86_64 (remi) php(api) = 20100412-x86-64 Available: php-common-5.4.21-2.el6.remi.x86_64 (remi) php(api) = 20100412-x86-64 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest Any idea how to solve these errors? Am I missing a package? or is this a bug?

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• Multicast hostname lookups on OSX

  - by KARASZI István

  I have a problem with hostname lookups on my OSX computer. According to Apple's HK3473 document it says for v10.6: Host names that contain only one label in addition to local, for example "My-Computer.local", are resolved using Multicast DNS (Bonjour) by default. Host names that contain two or more labels in addition to local, for example "server.domain.local", are resolved using a DNS server by default. Which is not true as my testing. If I try to open a connection on my local computer to a remote port: telnet example.domain.local 22 then it will lookup the IP address with multicast DNS next to the A and AAAA lookups. This causes a two seconds lookup timeout on every lookup. Which is a lot! When I try with IPv4 only then it won't use the multicast queries to fetch the remote address just the simple A queries. telnet -4 example.domain.local 22 When I try with IPv6 only: telnet -6 example.domain.local 22 then it will lookup with multicast DNS and AAAA again, and the 2 seconds timeout delay occurs again. I've tried to create a resolver entry to my /etc/resolver/domain.local, and /etc/resolver/local.1, but none of them was working. Is there any way to disable this multicast lookups for the "two or more label addition to local" domains, or simply disable it for the selected subdomain (domain.local)? Thank you!

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• Remove server hangs, gets stuck. How to debug?

  - by bibstha

  I have an vps running on VmWare ESX with Ubuntu 8.04 LTS. It has been running smoothly for the past 3 months, however recently we've notices two strange bugs. a. The server hangs, today was second time. The nature of the hang is very strange. I can ping to the server server, it sends back response fine. However all other services like sshd, apache, mysql etc do not respond at all. When working, telnet servername 22 Escape character is '^]'. SSH-2.0-OpenSSH_5.X Debian-5ubuntu1 And other web services would run fine. When its hung, I can make tcp connections to 22 as well as 80 but receive no response at all. telnet servername 22 Escape character is '^]'. How can I debug this problem? Is there any daemons I can run that will periodically log status? Please tell me as to how to proceed with it. b. The another strange problem is that, of lately I am unable to transfer files larger than around 100KB, smaller files of around 1-2 KB works file. scp anotherserver:filename . or wget http://www.example.com/file would get stuck. There is still around 6GB of space remaining, so I don't think that is an issue. Any pointers where I should look into?

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• SSH through standard Belkin router to Asus Tomato router

  - by Luke

  I've set up SSH on the Tomato firmware on an Asus N10, via port 22 with key authentication. I've tested the keys by connecting with putty directly to the router when connected to its network. That works OK. But this router is behind a Belkin (F5D7632-4) router which also acts as modem and when I try to connect through with the (dynamic) public IP it times out. I'm guessing it's something to do with the NAT? My putty settings are taken from various online tutorials, but it's set up for port 22, with the correct key as mentioned. The Belkin router has port forwarding to the Asus (192.168.2.3) for port 22 TCP and UDP set up. It's now tough to see what to do in order to connect to the Asus router with an external IP - if it's even possible. Ideally I would have liked to have only needed to use the Asus router, but as it doesn't act as a modem, I need to connect it to the Belkin to use Tomato's features. Perhaps there's a solution here too? Network: Internet -> Belkin modem/router -> Asus router (Tomato SSH) -> Devices

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• How is a subdomain passed to the webserver?

  - by Joshua Frank

  I know that dns resolves an address like example.com to an IP address like 11.22.33.44, but I'm a little confused about how subdomains are resolved, so that when you type http://subdomain.example.com, what actually gets passed to the server at 11.22.33.44? In other words, example.com = 11.22.33.44, but subdomain.example.com/path = ??? Are "subdomain" and "path" passed as http headers, or mapped in the url in some way, or what? Thanks in advance. Edit: If I'm understanding correctly, BloodPhilia says that subdomain.example.com actually is a different domain that in principle could resolve to a totally different IP. But if that's so, then what about hosts that have huge numbers of (what look like) subdomains, but which actually map to some path on the site. For instance, blogspot hosts millions of blogs, and they all look like this: aaa.blogspot.com bbb.blogspot.com ...millions more... yyy.blogspot.com zzz.blogspot.com Those are clearly not subdomains with their own IP's, but rather some mapping like aaa.blogspot.com -- www.blogspot.com/aaa, but how is this accomplished? What actually gets passed to the web server at blogspot.com?

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• port forwarding with socks over proxy

  - by Oz123

  I am trying to browse a wiki that runs on a server inside one domain from another domain. The wiki is accessible only on the LAN, but I need to browse it from another LAN to which I connect with an SSH tunnel ... Here is my setup and the steps I did so far: ~.ssh/confing on wikihost: Host gateway User kisteuser Port 443 Hostname gateway.companydomain.com ProxyCommand /home/myuser/bin/ssh-https-tunnel %h %p # ssh-https-tunnel: # http://ttcplinux.sourceforge.net/tools/stunnel Protocol 2 IdentityFile ~/.ssh/key_dsa LocalForward 11069 localhost:11069 Host server1 User kisteuser Hostname localhost Port 11069 LocalForward 8022 server1:22 LocalForward 17001 server1:7100 LocalForward 8080 www-proxy:3128 RemoteForward 11069 localhost:22 from wikihost myuser@wikihost: ssh -XC -t gateway.companydomain.com ssh -L11069:localhost:22 server1 on another terminal: ssh gateway.companydomain.com Now, on my companydomain I would like to start firefox and browse the wiki on wikihost. I did: [email protected] ~ $ ssh gateway Have a lot of fun... kisteuser@gateway ~ $ ssh -D 8383 localhost user@localhost's password: user@wikiserver:~> My .ssh/config on that side looks like that: host server1 localforward 11069 localhost:11069 host localhost user myuser port 11069 host wikiserver forwardagent yes user myuser port 11069 hostname localhost Now, I started firefox on the server called gateway, and edited the proxy settings to use SOCKSv5, specifying that the proxy should be gateway and use the port 8383... kisteuser@gateway ~ $ LANG=C firefox -P --no-remote And, now I get the following error popping in the Terminal of wikiserver: myuser@wikiserver:~> channel 3: open failed: connect failed: Connection refused channel 3: open failed: connect failed: Connection refused channel 3: open failed: connect failed: Connection refused Confused? Me too ... Please help me understand how to properly build the tunnels and browse the wiki over SOCKS protocol. update: I managed to browse the wiki on wikiserver with the following changes: host wikiserver forwardagent yes user myuser port 11069 hostname localhost localforward 8339 localhost:8443 Now when I ssh gateway I launch Firefox and go to localhost:8339 and I hit the start page of the wiki, which is served on Port 8443. Now I ask myself is SOCKS really needed? Can someone elaborate on that ?

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• Ubuntu Pound Reverse Proxy Load Balancing Based off active server load?

  - by Andrew

  I have Pound installed on a loadbalancer. It seems to work okay, except that it randomly assigns the backend server to forward the request to. I've put 1 backend machine under so much load that it went into using swap, and I can't even ssh into it to test this scenareo. I would like the loadbalancer to realize that the machine is overloaded, and send it to a different backend machine. However it doesn't. I've read the man page and it seems like the directive "DynScale 1" is what would monitor this, but it still redirects to the overloaded server. I've also put in "HAport 22" to the backend figuring since I can't ssh in, neither could the loadbalancer and it would consider the backend server dead until it gets rid of the load and responds, but that didn't help either. If anyone could help with this, I'd appreciate it. My current config is below. ###################################################################### ## global options: User "www-data" Group "www-data" #RootJail "/chroot/pound" ## Logging: (goes to syslog by default) ## 0 no logging ## 1 normal ## 2 extended ## 3 Apache-style (common log format) LogLevel 3 ## check backend every X secs: Alive 5 DynScale 1 Client 1200 TimeOut 1500 # poundctl control socket Control "/var/run/pound/poundctl.socket" ###################################################################### ## listen, redirect and ... to: ## redirect all requests on port 80 to SSL ListenHTTP Address 192.168.1.XX Port 80 Service Redirect "https://xxx.com/" End End ListenHTTPS Address 192.168.1.XX Port 443 Cert "/files/www.xxx.com.pem" Service BackEnd Address 192.168.1.1 Port 80 HAport 22 End BackEnd Address 192.168.1.2 Port 80 HAport 22 End End End

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• Timely automatic unexpected reboot on ubuntu desktop

  - by ahmad

  We have a remote linux server (ubuntu desktop). The system log indicates the system has been restarted on the timely fashion. Here is a part of the last output: ut pts/0 192.169.50.2-sta Sat Nov 24 22:17 still logged in reboot system boot 2.6.32-21-generi Sat Nov 24 22:04 - 22:17 (00:13) ut pts/0 server.local Sat Nov 24 21:36 - crash (00:27) reboot system boot 2.6.32-21-generi Sat Nov 24 15:55 - 22:17 (06:21) reboot system boot 2.6.32-21-generi Fri Nov 23 18:02 - 22:17 (1+04:14) reboot system boot 2.6.32-21-generi Fri Nov 23 10:39 - 22:17 (1+11:38) reboot system boot 2.6.32-21-generi Fri Nov 23 04:18 - 22:17 (1+17:59) reboot system boot 2.6.32-21-generi Fri Nov 23 03:57 - 22:17 (1+18:20) reboot system boot 2.6.32-21-generi Thu Nov 22 20:38 - 22:17 (2+01:38) reboot system boot 2.6.32-21-generi Thu Nov 22 11:13 - 22:17 (2+11:03) reboot system boot 2.6.32-21-generi Thu Nov 22 08:12 - 22:17 (2+14:05) reboot system boot 2.6.32-21-generi Wed Nov 21 11:16 - 22:17 (3+11:00) reboot system boot 2.6.32-21-generi Tue Nov 20 22:36 - 22:17 (3+23:41) reboot system boot 2.6.32-21-generi Tue Nov 20 14:12 - 22:17 (4+08:05) reboot system boot 2.6.32-21-generi Tue Nov 20 11:32 - 22:17 (4+10:44) reboot system boot 2.6.32-21-generi Tue Nov 20 01:52 - 22:17 (4+20:25) reboot system boot 2.6.32-21-generi Tue Nov 20 00:22 - 22:17 (4+21:55) reboot system boot 2.6.32-21-generi Mon Nov 19 17:27 - 22:17 (5+04:50) It looks the system is set to be restarted at 22:17. Can anyone guide me why this happens? Thanks in advance.

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• How do I Forward root's email to an external email address?

  - by ErebusBat

  I have a small server (Ubuntu 10.04) at my house and I would like to forward root's email to my gmail hosted domain to get security notifications and what not. I ripped everything out and started from scratch and ran into some other issues. I now have sendmail working in the sense that I can mail [email protected] and get the mail. HOWEVER, adding an address to /root/.forward does not actually forward the message. I get the following in my logs: Dec 22 14:04:37 batcave sendmail[4695]: oBML4bAT004695: to=<root@batcave>, ctladdr=aburns (1000/1000), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30075, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (oBML4bJ9004696 Message accepted for delivery) Dec 22 14:04:39 batcave sm-mta[4698]: STARTTLS=client, relay=[69.145.248.18], version=TLSv1/SSLv3, verify=FAIL, cipher=DES-CBC3-SHA, bits=168/168 Dec 22 14:04:40 batcave sm-mta[4698]: oBML4bJ9004696: to=<[email protected]>, ctladdr=<[email protected]> (1000/1000), delay=00:00:03, xdelay=00:00:03, mailer=relay, pri=120336, relay=[69.145.248.18] [69.145.248.18], dsn=2.0.0, stat=Sent (OK 01/D4-00853-216621D4) You can see where my local sendmail instance accepts it then hands it off to my ISP, but with the wrong address ([email protected]).

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• I need a reverse proxy solution for SSH

  - by Bond

  Hi here is a situation I have a server in a corporate data center for a project. I have an SSH access to this machine at port 22.There are some virtual machines running on this server and then at the back of every thing many other Operating systems are working. Now Since I am behind the data centers firewall my supervisor asked me if I can do some thing by which I can give many people on Internet access to these virtual machines directly. I know if I were allowed to get traffic on port other than 22 then I can do a port forwarding. But since I am not allowed this so what can be a solution in this case. The people who would like to connect might be complete idiots.Who may be happy just by opening putty at their machines or may be even filezilla.I have configured an Apache Reverse Proxy for redirecting the Internet traffic to the virtual machines on these hosts.But I am not clear as for SSH what can I do.So is there some thing equivalent to an Apache Reverse Proxy which can do similar work for SSH in this situation. I do not have firewall in my hands or any port other than 22 open and in fact even if I request they wont allow to open.2 times SSH is not some thing that my supervisor wants.

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• Iptables ignoring a rule in the config file

  - by Overdeath

  I see lot of established connections to my apache server from the ip 188.241.114.22 which eventually causes apache to hang . After I restart the service everything works fine. I tried adding a rule in iptables -A INPUT -s 188.241.114.22 -j DROP but despite that I keep seeing connections from that IP. I'm using centOS and i'm adding the rule like thie: iptables -A INPUT -s 188.241.114.22 -j DROP Right afther that I save it using: service iptables save Here is the output of iptables -L -v ` Chain INPUT (policy ACCEPT 120K packets, 16M bytes) pkts bytes target prot opt in out source destination 0 0 DROP all -- any any lg01.mia02.pccwbtn.net anywhere 0 0 DROP all -- any any c-98-210-5-174.hsd1.ca.comcast.net anywhere 0 0 DROP all -- any any c-98-201-5-174.hsd1.tx.comcast.net anywhere 0 0 DROP all -- any any lg01.mia02.pccwbtn.net anywhere 0 0 DROP all -- any any www.dabacus2.com anywhere 0 0 DROP all -- any any 116.255.163.100 anywhere 0 0 DROP all -- any any 94.23.119.11 anywhere 0 0 DROP all -- any any 164.bajanet.mx anywhere 0 0 DROP all -- any any 173-203-71-136.static.cloud-ips.com anywhere 0 0 DROP all -- any any v1.oxygen.ro anywhere 0 0 DROP all -- any any 74.122.177.12 anywhere 0 0 DROP all -- any any 58.83.227.150 anywhere 0 0 DROP all -- any any v1.oxygen.ro anywhere 0 0 DROP all -- any any v1.oxygen.ro anywhere Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 186K packets, 224M bytes) pkts bytes target prot opt in out source destination `

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• How can I fill (not replace) TAB with Spaces in MSWord?

  - by Morteza

  How can I fill (not replace) TAB with Spaces in MS Office Word? In other word, have a look at the following pic: 1 -> 222 -> 3 111 -> 2 -> 333 11 -> 22 -> 33 11 -> 2222 -> 3333 Suppose that - is indicated one TAB. As you see, each column is justified from left. I need to fill each TAB with Spaces, so that the justification not be confused. If I use 'Find & Replace' option to change each TABs to a specific number of Spaces, justification will be confused because each column have its own character number. In other word, if I change each TAB with 6 Spaces, the above will be changed to the follow: 1 222 3 111 2 333 11 22 33 11 2222 3333 My need is as follow (each dot indicate a Space): 1......222......3 111....2........333 11.....22.......33 11.....2222.....3333

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• How To Boot with "mem=1024m" Argument using GRUB - Ubuntu 10.04

  - by nicorellius

  I am still working on this question. This new one is a different question so I thought it would be good to post a new question. Is this the proper protocol or should I have just edited the other question? I'm running Ubuntu 10.04 with the kernel 2.6.32-22-generic on a Toshiba Satellite laptop. When I enter the GRUB menu (I have Ubuntu 9.10 installed as well), I can choose which kernel to boot. I use scroll down to the one I want and press "e" and I expect to be able to enter mem=1024m and force the kernel to use this much memory. But when I run cat /proc/meminfo or look in the process manager after booting wth this argument I still see all the RAM: ~2 GB. Am I using this boot argument incorrectly? The boot configuration (before I add anything) looks like this: insmod ext2 set root=(hd0,1) search --no-floppy --fs-uuid --set 10270f21-1c42-494b-bd3f-813c23f6d\ 518 linux /boot/vmlinuz-2.6.32-22-generic root=UUID=10270f21-1c42-494b-b\ d3f-813c23f6d518 ro quiet splash initrd /boot/initrd.img-2.6.32-22-generic The way I did this was that I added the mem=1024m after the last line and pressed Ctrl+x (Emacs save and boot the kernel) and the system booted. I tried adding mem=1024m to the end and the beginning of this list and it appeared to not change the RAM allocation.

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• Access an external SSH server through a restrictive proxy [on hold]

  - by Cyrille

  I'm a software developer. I wish to access my computer at home through SSH. For example, I sometime need to access my personal projects source code to check how I handled specific problems. Unfortunately, I currently work under an over-restrictive and anti-productive proxy that waste a hell of a lot of everyone's time (We often have to visit websites from our smartphones or use a web proxy to check very legitimates websites for answers, and don't get me started on other "security" overkill features we have to cope with...). Well, back to the subject, I can access my home computer from my phone (SSH, port 22 and 80 both redirected by router on port 22). It works, but it's quite uncomfortable. From my office computer, this is what I tried so far: export http_proxy=http://user:pass@proxyip:8080 echo "user:pass" > ~/.corkscrew-auth echo "ProxyCommand corkscrew proxyip 8080 %h %p /home/me/.corkscrew-auth" > ~/.ssh/config ssh 82.23.34.56 -l me -p 80 Proxy could not open connnection to 82.23.34.56: Forbidden ssh_exchange_identification: Connection closed by remote host (same without -p 80) Without corkscrew: ssh: connect to host 82.23.34.56 port 80: Connection timed out ssh: connect to host 82.23.34.56 port 22: Connection timed out Any other idea ?

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