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  • Multiple VLANs, multiple subnets, single DHCP server?

    - by EightQuarterBit
    Hey guys! At my job we are prepping to transition from multiple LANs connected over slow VPN connections to a single MAN connected over fiber, and I've got a few questions. First of all, we are planning on making each physical site its own VLAN, but we would like to have a single DHCP server at the data center hand out IPs to each VLAN. We've pretty much got the VLAN tagging structure all worked out, but we would like to have our single DHCP server assign different subnets of IPs to each VLAN. For instance, VLAN 2 gets 10.0.2.x through 10.0.4.x, VLAN 3 gets 10.0.5.x through 10.0.7.x etc. We are an Active Directory based shop and we have a Server 2003 box handling DHCP (though we aren't averse to upgrading it to server 2008.) Is this feasible, or am I pipe-dreaming?

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  • VSFTPD and Implicit SSL

    - by Luma
    Hi Everyone, I have a Debian Dedicated server and I want to enable Implicit SSL on it using VSFTPD and I am having a hard time. I have read online and the only thing I can really find is how to enable SSL and in the man pages it lists one implicit ssl command. but since Implicit ssl uses a second listener (990 by default) I have no idea how to make it work on Debian. Has anyone managed to get this working? Here is my config: listen=YES anonymous_enable=NO local_enable=YES write_enable=YES local_umask=022 connect_from_port_20=YES pam_service_name=vsftpd ssl_enable=YES allow_anon_ssl=NO force_local_data_ssl=NO force_local_logins_ssl=NO ssl_tlsv1=YES ssl_sslv2=NO ssl_sslv3=NO rsa_cert_file=/etc/ssl/certs/vsftpd.pem if I include Implicit_SSL=YES the server won't even start. thanks

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  • How do I view the job queue in lftp after it has moved to a background process?

    - by drpfenderson
    I've just started using lftp for remote transferring files on my Raspberry Pi running Debian. I know how to transfer the files, and use queue and jobs to add and view transferring files. However, I'm not actually sure on how to view these transfers once lftp moves to the background. The lftp man page mentions how lftp is moving to the background, but when I open a new instance of the program from shell and type jobs, the queue is empty. However, I can clearly see using my file manager that the transfers are still happening, as the files are there and growing in size. I'm guessing that when I reopen lftp, it's just opening a new instance that isn't connected to the nohup mode lftp that has the active queue. I've tried searching various places, but no one else seems to have this particular issue. So, I guess what I'm asking is twofold: Is there a way to easily attach to the background lftp process to view the current jobs list? If not, is there a way to view this at all?

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  • OpenBSD configuration: Client unable to mount via NFS using Berkeley Automounter (amd)

    - by Rilindo
    What I am trying to do is to have my openBSD client (OpenBSD 4.9) auto mount a Linux NFS file system (Scientific Linux 6.1). So far, I am not sure if it is configured correctly. To get things out of the way, I am able to mount nfs manually: # mount_nfs -T -3 192.168.15.100:/exports /mnt # ls -la /mnt total 52 drwxr-xr-x 7 root wheel 4096 Oct 4 22:42 . drwxr-xr-x 16 root wheel 512 Nov 26 16:33 .. drwxrwxr-x 5 _sndio _sndio 4096 Oct 31 21:58 centos drwxr-xr-x 15 root wheel 4096 Nov 6 09:17 home drwxr-xr-x 5 root wheel 4096 Oct 31 21:27 sl drwxr-xr-x 3 root wheel 4096 Nov 19 16:02 sles drwxr-xr-x 17 503 503 4096 Nov 10 17:37 users # So connectivity is not an issue, as far as I can tell. As per man page, the following is configured in /etc/amd/auto.home: /defaults type:=nfs;sublink:=${key};opts:=rw,soft,intr,vers=3,proto=tcp * rhost:=192.168.15.100;rfs:=/exports In turn, /etc/amd/master is configured as such: # cat /etc/amd/master /exports amd.home Upon reboot, I can it see mount, but curiously enough, instead of the hostname: amd:24490 0 0 0 100% /exports From what I understand, amd acts a little different from FreeBSD. Still, I tried to see if I it can automount. Nope: ksh: cd: /exports/users - Resource temporarily unavailable # cd /exports/192.168.15.100/host/users ksh: cd: /exports/192.168.15.100/host/users - Resource temporarily unavailable A search in google doesn't help too much - it seems that automounting NFS with OpenBSD is not something that is usually done. Other than this, information is fairly sparse. I can, of course, always mount is permanently, but I tend to be a bit anal on convention, so no for now. :) Some direction would be appreciation. (And oh, in case you are a wondering, I tried FreeBSD way of using amd and that hasn't worked out - although I wouldn't mind an explanation of the difference between how FreeBSD implements and how OpenBSD implements it) UPDATE: After re-writing the map file several times, I got as far as actually communicating with the NFS server with this configuration: /defaults type:=nfs;rhost:=kerberos.monzell.com;rfs:=/exports;\ sublink:=${key};opts:=rw,nodev,nosuid,soft,intr,tcp,resvport * ${host}==${rhost};type:=nfs;fs:=${rfs};opts:=rw,nodev,nosuid,soft,intr,tcp,resvport However, for some reason, it seems that amd will only default to NFS version 2 over udp: # tcpdump dst kerberos tcpdump: listening on pcn0, link-type EN10MB tcpdump: WARNING: compensating for unaligned libpcap packets 20:38:28.558385 openbsd.monzell.com.856 > kerberos.monzell.com.sunrpc: udp 100 20:38:28.559154 openbsd.monzell.com.856 > kerberos.monzell.com.892: udp 96 20:38:30.592761 openbsd.monzell.com.856 > kerberos.monzell.com.nfsd: xid 0x22000000 (NFSv2) 40 null 20:38:33.558107 arp reply openbsd.monzell.com is-at 52:54:00:52:8f:66 I tried various options of forcing it to try to mount as nfsv3 such as: /defaults type:=nfs;rhost:=kerberos.monzell.com;rfs:=/exports;\ sublink:=${key};opts:=rw,nodev,nosuid,soft,intr,vers=3,proto=tcp,resvport * ${host}==${rhost};type:=nfs;fs:=${rfs};opts:=rw,nodev,nosuid,soft,intr,vers=3,proto=tcp,resvport or: /defaults type:=nfs;rhost:=kerberos.monzell.com;rfs:=/exports;\ sublink:=${key};opts:=rw,nodev,nosuid,soft,intr,vers=-3,proto=tcp,resvport * ${host}==${rhost};type:=nfs;fs:=${rfs};opts:=rw,nodev,nosuid,soft,intr,vers=3,proto=tcp,resvport Nothing yet still. Curious enough, OpenBSD mounts defaults to version 3, so I am not sure why it would start with version in amd. What would be the correct options to pass?

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  • How do you enable syslogd to accept incoming connections on Snow Leopard from remote loggers?

    - by Emmel
    How do I get syslogd to accept incoming connections from remote hosts on Snow Leopard? I'd like to centralize logging such that various devices and systems send logs to Snow Leopard's syslogd, which normally hangs out on UDP 514. However, I'm unable to get them to successfully be accepted by good ole syslogd. I tcpdumped on the Snow Leopard box to verify that packets are being spouted to port 514 -- they are. I checked that syslogd is listening on 514 -- it's not. Googling around told me that, on older versions of OSX (don't you love the way things change so rapidly on OSX), one just had to add a flag to the syslogd daemon to allow remote; one did this in com.apple.syslogd.plist. However the syslogd daemon has no flags (at least in its man page) that suggests any remote anything. What's the solution to this? Secondary, less import but relevant question: What's 'newsyslog'? I see a plist file but it's not running (apparently). Thanks

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  • Diagnosing packet loss / high latency in Ubuntu

    - by Sam Gammon
    We have a Linux box (Ubuntu 12.04) running Nginx (1.5.2), which acts as a reverse proxy/load balancer to some Tornado and Apache hosts. The upstream servers are physically and logically close (same DC, sometimes same-rack) and show sub-millisecond latency between them: PING appserver (10.xx.xx.112) 56(84) bytes of data. 64 bytes from appserver (10.xx.xx.112): icmp_req=1 ttl=64 time=0.180 ms 64 bytes from appserver (10.xx.xx.112): icmp_req=2 ttl=64 time=0.165 ms 64 bytes from appserver (10.xx.xx.112): icmp_req=3 ttl=64 time=0.153 ms We receive a sustained load of about 500 requests per second, and are currently seeing regular packet loss / latency spikes from the Internet, even from basic pings: sam@AM-KEEN ~> ping -c 1000 loadbalancer PING 50.xx.xx.16 (50.xx.xx.16): 56 data bytes 64 bytes from loadbalancer: icmp_seq=0 ttl=56 time=11.624 ms 64 bytes from loadbalancer: icmp_seq=1 ttl=56 time=10.494 ms ... many packets later ... Request timeout for icmp_seq 2 64 bytes from loadbalancer: icmp_seq=2 ttl=56 time=1536.516 ms 64 bytes from loadbalancer: icmp_seq=3 ttl=56 time=536.907 ms 64 bytes from loadbalancer: icmp_seq=4 ttl=56 time=9.389 ms ... many packets later ... Request timeout for icmp_seq 919 64 bytes from loadbalancer: icmp_seq=918 ttl=56 time=2932.571 ms 64 bytes from loadbalancer: icmp_seq=919 ttl=56 time=1932.174 ms 64 bytes from loadbalancer: icmp_seq=920 ttl=56 time=932.018 ms 64 bytes from loadbalancer: icmp_seq=921 ttl=56 time=6.157 ms --- 50.xx.xx.16 ping statistics --- 1000 packets transmitted, 997 packets received, 0.3% packet loss round-trip min/avg/max/stddev = 5.119/52.712/2932.571/224.629 ms The pattern is always the same: things operate fine for a while (<20ms), then a ping drops completely, then three or four high-latency pings (1000ms), then it settles down again. Traffic comes in through a bonded public interface (we will call it bond0) configured as such: bond0 Link encap:Ethernet HWaddr 00:xx:xx:xx:xx:5d inet addr:50.xx.xx.16 Bcast:50.xx.xx.31 Mask:255.255.255.224 inet6 addr: <ipv6 address> Scope:Global inet6 addr: <ipv6 address> Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:527181270 errors:1 dropped:4 overruns:0 frame:1 TX packets:413335045 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:240016223540 (240.0 GB) TX bytes:104301759647 (104.3 GB) Requests are then submitted via HTTP to upstream servers on the private network (we can call it bond1), which is configured like so: bond1 Link encap:Ethernet HWaddr 00:xx:xx:xx:xx:5c inet addr:10.xx.xx.70 Bcast:10.xx.xx.127 Mask:255.255.255.192 inet6 addr: <ipv6 address> Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:430293342 errors:1 dropped:2 overruns:0 frame:1 TX packets:466983986 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:77714410892 (77.7 GB) TX bytes:227349392334 (227.3 GB) Output of uname -a: Linux <hostname> 3.5.0-42-generic #65~precise1-Ubuntu SMP Wed Oct 2 20:57:18 UTC 2013 x86_64 GNU/Linux We have customized sysctl.conf in an attempt to fix the problem, with no success. Output of /etc/sysctl.conf (with irrelevant configs omitted): # net: core net.core.netdev_max_backlog = 10000 # net: ipv4 stack net.ipv4.tcp_ecn = 2 net.ipv4.tcp_sack = 1 net.ipv4.tcp_fack = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 0 net.ipv4.tcp_timestamps = 1 net.ipv4.tcp_window_scaling = 1 net.ipv4.tcp_no_metrics_save = 1 net.ipv4.tcp_max_syn_backlog = 10000 net.ipv4.tcp_congestion_control = cubic net.ipv4.ip_local_port_range = 8000 65535 net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_synack_retries = 2 net.ipv4.tcp_thin_dupack = 1 net.ipv4.tcp_thin_linear_timeouts = 1 net.netfilter.nf_conntrack_max = 99999999 net.netfilter.nf_conntrack_tcp_timeout_established = 300 Output of dmesg -d, with non-ICMP UFW messages suppressed: [508315.349295 < 19.852453>] [UFW BLOCK] IN=bond1 OUT= MAC=<mac addresses> SRC=118.xx.xx.143 DST=50.xx.xx.16 LEN=68 TOS=0x00 PREC=0x00 TTL=51 ID=43221 PROTO=ICMP TYPE=3 CODE=1 [SRC=50.xx.xx.16 DST=118.xx.xx.143 LEN=40 TOS=0x00 PREC=0x00 TTL=249 ID=10220 DF PROTO=TCP SPT=80 DPT=53817 WINDOW=8190 RES=0x00 ACK FIN URGP=0 ] [517787.732242 < 0.443127>] Peer 190.xx.xx.131:59705/80 unexpectedly shrunk window 1155488866:1155489425 (repaired) How can I go about diagnosing the cause of this problem, on a Debian-family Linux box?

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  • Torque and maui node status

    - by Lafada
    I am new for torque and maui. I was checking for node state to looking for which nodes are free and which nodes are in use. For torque one command is pbsnodes. Which gives status and other info related to node. When I was checking for maui then I found command diagnose -n which also shows status of the node. I was wondering between these 2 status. Both are giving different status for the same situation. When I do man pbsnodes I got the possible states for node "free", "offline", "down", "reserve", "job-exclusive", "job-sharing", "busy", "time-shared", or "state-unknown" But this type of different state I cant find for diagnose -n. How pbsnodes and diagnose -n get the status for node. Is there any database like xCAT use for torque or maui? Thx in advance for your valuable time.

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  • OpenBSD configuration: Client unable to automount via NFS using amd

    - by Rilindo
    What I am trying to do is to have my openBSD client (OpenBSD 4.9) auto mount a Linux NFS file system (Scientific Linux 6.1). So far, I am not sure if it is configured correctly. To get things out of the way, I am able to mount nfs manually: # mount_nfs -T -3 192.168.15.100:/exports /mnt # ls -la /mnt total 52 drwxr-xr-x 7 root wheel 4096 Oct 4 22:42 . drwxr-xr-x 16 root wheel 512 Nov 26 16:33 .. drwxrwxr-x 5 _sndio _sndio 4096 Oct 31 21:58 centos drwxr-xr-x 15 root wheel 4096 Nov 6 09:17 home drwxr-xr-x 5 root wheel 4096 Oct 31 21:27 sl drwxr-xr-x 3 root wheel 4096 Nov 19 16:02 sles drwxr-xr-x 17 503 503 4096 Nov 10 17:37 users # So connectivity is not an issue, as far as I can tell. As per man page, the following is configured in /etc/amd/auto.home: /defaults type:=nfs;sublink:=${key};opts:=rw,soft,intr,vers=3,proto=tcp * rhost:=192.168.15.100;rfs:=/exports In turn, /etc/amd/master is configured as such: # cat /etc/amd/master /exports amd.home Upon reboot, I can it see mount, but curiously enough, instead of the hostname: amd:24490 0 0 0 100% /exports From what I understand, amd acts a little different from FreeBSD. Still, I tried to see if I it can automount. Nope: ksh: cd: /exports/users - Resource temporarily unavailable # cd /exports/192.168.15.100/host/users ksh: cd: /exports/192.168.15.100/host/users - Resource temporarily unavailable A search in google doesn't help too much - it seems that automounting NFS with OpenBSD is not something that is usually done. Other than this, information is fairly sparse. I can, of course, always mount is permanently, but I tend to be a bit anal on convention, so no for now. :) Some direction would be appreciation. (And oh, in case you are a wondering, I tried FreeBSD way of using amd and that hasn't worked out - although I wouldn't mind an explanation of the difference between how FreeBSD implements and how OpenBSD implements it) UPDATE: After re-writing the map file several times, I got as far as actually communicating with the NFS server with this configuration: /defaults type:=nfs;rhost:=kerberos.monzell.com;rfs:=/exports;\ sublink:=${key};opts:=rw,nodev,nosuid,soft,intr,tcp,resvport * ${host}==${rhost};type:=nfs;fs:=${rfs};opts:=rw,nodev,nosuid,soft,intr,tcp,resvport However, for some reason, it seems that amd will only default to NFS version 2 over udp: # tcpdump dst kerberos tcpdump: listening on pcn0, link-type EN10MB tcpdump: WARNING: compensating for unaligned libpcap packets 20:38:28.558385 openbsd.monzell.com.856 > kerberos.monzell.com.sunrpc: udp 100 20:38:28.559154 openbsd.monzell.com.856 > kerberos.monzell.com.892: udp 96 20:38:30.592761 openbsd.monzell.com.856 > kerberos.monzell.com.nfsd: xid 0x22000000 (NFSv2) 40 null 20:38:33.558107 arp reply openbsd.monzell.com is-at 52:54:00:52:8f:66 I tried various options of forcing it to try to mount as nfsv3 such as: /defaults type:=nfs;rhost:=kerberos.monzell.com;rfs:=/exports;\ sublink:=${key};opts:=rw,nodev,nosuid,soft,intr,vers=3,proto=tcp,resvport * ${host}==${rhost};type:=nfs;fs:=${rfs};opts:=rw,nodev,nosuid,soft,intr,vers=3,proto=tcp,resvport or: /defaults type:=nfs;rhost:=kerberos.monzell.com;rfs:=/exports;\ sublink:=${key};opts:=rw,nodev,nosuid,soft,intr,vers=-3,proto=tcp,resvport * ${host}==${rhost};type:=nfs;fs:=${rfs};opts:=rw,nodev,nosuid,soft,intr,vers=3,proto=tcp,resvport Nothing yet still. Curious enough, OpenBSD mounts defaults to version 3, so I am not sure why it would start with version in amd. What would be the correct options to pass?

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  • File sync over LAN

    - by Jack
    At the moment, I'm using Dropbox on my computer and Dropsync on my Android phone (over WiFi) to one-way sync the files (such as photos/app backups) on my phone to the Dropbox servers which are then synced to my computer. I like the features of Dropsync which can be set to sync only when the phone is charging and the WiFi is on. So everytime I charge my phone, i know my files are being backed up. Now I'm wondering if there's a similar app/program combo or something that can do what I'm currently doing but remove the middle-man (Dropbox servers)?

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  • signed software :: installer -- system software and package installer tool (Apple *.pkg)

    - by fyodor78
    Does anybody know a few details about signed software and /Applications/Utilities/Installer.app? I didn't find more at Wikipedia (https://secure.wikimedia.org/wikipedia/en/wiki/Installer_%28Mac_OS_X%29) and the UNIX-Manual (man 8 installer). I have here a valid signature from iLife 11 Installer.app (http://i.imgur.com/Y3raY.jpg). Does this mean I can be 100% sure that nothing is modified? It means I can trust this PKG because signed by Apple? Or did I get something wrong?

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  • If I'm a web server, for which accounts can I turn off shells within passwd file?

    - by eric01
    I am making a web server running LAMP and want to access it using SSH. When I open the passwd file, I see all those accounts and I want to know for which ones I can put false. I have the following accounts: root, daemon, bin, sys, sync, games, man, lp, mail, news, uucp, proxy, www-data backup, list, irc, gnats, nobody, libuuid, syslog, messagebus, whoopsie, mandscape, sshd, eric Except root, sshd and eric, which ones should I not disable? How about www-data and sshd? Thanks a lot for your help.

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  • Setting up Splunk/IronPort WSA

    - by Ciddan
    I recently stumbled across Splunk 4 (by way of an advert on this very site...) and found that it had an "App" that's designed to work with Cisco IronPort WebSecurity and E-Mail Appliances! That's really awesome, because good IronPort reporting is something our IT-dept. is looking for. Anyways - I'm totally lost on how to configure this thing. I've googled like a mad-man to find a guide or such like - but I haven't found anything. Has anyone here set up IP / Splunk? Any tips/pointers?

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  • Yum install in chroot directory

    - by pulegium
    I'm trying to install the Base group on a mounted volume. Here's the custom yum.conf that I'm using: [main] cachedir=/var/cache/yum/ debuglevel=2 logfile=/var/log/yum.log exclude=*-debuginfo obsoletes=1 gpgcheck=0 reposdir=/dev/null [base] name=Fedora 13 - i386 baseurl=file:///media/Fedora\ 13\ i386\ DVD/ enabled=1 [updates] name=Fedora 13 - i386 - Updates baseurl=http://mirror.sov.uk.goscomb.net/fedora/linux/updates/13/i386/ enabled=1 When I run # yum -c yum.conf --installroot=/mnt groupinstall Base I would expect yum to install everything under /mnt But it keeps on saying: [...] Package irda-utils-0.9.18-10.fc12.i686 already installed and latest version Package time-1.7-37.fc12.i686 already installed and latest version Package man-pages-3.23-6.fc13.noarch already installed and latest version Package talk-0.17-33.2.4.i686 already installed and latest version Package pam_passwdqc-1.0.5-6.fc13.i686 already installed and latest version [...] I tried rpm --base=/mnt --initdb and then use rpm to install fedora-release (which worked and installed the package under /mnt) But yum keeps on saying that all packages are installed. Any ideas?...

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  • Setting up Splunk/IronPort WSA

    - by Ciddan
    Hello everyone! I recently stumbled across Splunk 4 (by way of an advert on this very site...) and found that it had an "App" that's designed to work with Cisco IronPort WebSecurity and E-Mail Appliances! That's really awesome, because good IronPort reporting is something our IT-dept. is looking for. Anyways - I'm totally lost on how to configure this thing. I've googled like a mad-man to find a guide or such like - but I haven't found anything. Has anyone here set up IP / Splunk? Any tips/pointers? Regards, Mikael Selander

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  • Wireless networking on Gnome on Ubuntu 9 / 10

    - by WaveyDavey
    So here's my problem: I have some netbooks (ASUS eee, and ACER Aspire Ones) that I've been tasked to set up as kiosk machines, locked up tight for normal users. I am a command-line, server man, so this gnome malarkey is all a bit new to me. I found a lovely 9.04 kiosk livecd that installs and runs exactly as I want it to, but I can't get the wireless working. So I dropped on a full 10.4 distro, and wireless works straight out of the box (so hardware is good) - all I needed to do was right-click on the network connection icon, enter my SSID and password (WPA/WPA2) and away it went, perfect. Further investigation on 10.4 distro shows that /etc/networking/interfaces is virtually empty (just auto lo iface lo inet loopback in it), even after I have set up the wireless thru the gnome taskbar applet (is that the right word?). So where does gnome / ubuntu store the network settings to bring the blasted wireless connection up, and what do I need to do on the kiosk version to get wireless running?

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  • Laptop Akku defekt? [closed]

    - by venturebeats
    Ich habe ein großes Problem und zwar startet mein Laptop akku: akku Dell Inspiron 9400 Gut, dann machte ich ihn aber sofort "aus", ich klappte ihn eben zu, was heißt Energie sparen, er ist nicht heruntergefahren! Eine halbe Stunde später wollte mein Vater noch ran, er war dann auch ca. 5min und dann fuhr der Laptop wie gewöhnlich, wwenn er kein Akku mehr hat, heerunter. Dann wollten wir den Laptop wieder aufladen, doch es brannte nicht einmal die rote LED, was soviel heißt wie der Akku wird geladen. Und der Laptop (übrigens erst 7 Monate alt) kann man nicht startet! Nun meine Frage, hat das was mit dem Aufladekabel zu tun( dort brennt immer noch die grüne Lampe, was soviel heißt, wie dass aufjedenfall von der Seckdose Strom kommt) oder ist etwas am Laptop, bzw. ist er kaputt?

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  • How to force Chrome to make bookmarks the priority for auto-complete in the address bar?

    - by NoCatharsis
    As it is right now, if I start typing, for instance, "dictionary" into the address bar, Chrome immediately returns a list of bookmarks, history, and related sites. However, the first and highlighted option is to search Google for "dictionary". I want Chrome to immediately recognize that I have a bookmark specifically named "Dictionary" that links to the site www.dictionary.com. But, that's the second choice, not the first. So I have to type a few letters, get auto-complete to suggest some sites, then key down to my bookmark item before pressing Enter. How annoying. Any way to cut the middle man and make my bookmark the top result?

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  • Bonjour/DNS Service Discovery queries

    - by senloe
    I'm trying to implement dns service discovery in my application (no, I'm not asking for a programmatic answer). What I believe is one of my big pain points is generating the query. I know I need to send out a multicast broadcast on port 5353 and want to look for devices of type _ipp._tcp and _print._tcp, but I don't know what the question section needs to look like. For example, in SSDP I sent out a query that looks like the following: "M-SEARCH * HTTP/1.1\r\n" "HOST: 239.255.255.250:1900\r\n" + "MAN: \"ssdp:discover\"\r\n" "ST: urn:schemas-upnp-org:device:Printer:1\r\n" "MX: 5000\r\n\r\n" From what I know about a DNS query I need to send something like: "_ipp.tcp,all,all" but I know there needs to be more. Any pointers to documentation, etc would be greatly appreciated! update rfc1035 appears to contain promising information re the message structure.

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  • mdadm email notification - change the default subject

    - by Shirker
    I have entry in my crontab 00 */1 * * * /sbin/mdadm --monitor --scan -1 [email protected] It works more than perfect, but I need to change the default email template. So instead of subject "mdadm monitoring" it wished to be "mdadm monitoring from «IP ADDRESS»" or like that. [root@mail ~]# rpm -ql mdadm-3.2.5-4.el6_4.2.x86_64 | grep -v -E '(man|doc)' /etc/cron.d/raid-check /etc/rc.d/init.d/mdmonitor /etc/sysconfig/raid-check /lib/udev/rules.d/65-md-incremental.rules /sbin/mdadm /sbin/mdmon /usr/sbin/raid-check /var/run/mdadm Is it hardcoded or its possible to change?

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  • Apache SSL Log Incomplete SSL Handshake

    - by Raymond Berg
    Scenario: We're running some experiments in our classroom around trusted connections and SSL, and I want to demonstrate the SSL handshake request on a man-in-the-middle attack. I have an Apache server with a self-signed cert. Everything works fine, but the logging seems incomplete as there is no way to get a list of SSL attempts. Once the client accepts the 'exception', I get normal access log messages for every request. However, I need to know what ssl request caused it to fail. Here are my log directives: LogLevel warn ErrorLog logs/ssl_error_log CustomLog logs/ssl_access_log combined #the combined is your average custom log My desire is a list of every SSL handshake attempted. What am I missing that could produce something like the following? (Obviously the exact words aren't needed, but in the ballpark) 0/0/0 00:00:00 - 192.168.1.10 - hijk.lmnop.edu - SSL Mismatch

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  • Using windowmaker with quartz-wm in proxy mode on Snow Leopard

    - by Graham Lee
    I can modify my .xinitrc file to exec /opt/local/bin/wmaker, and get WindowMaker 0.90.2 as my window manager in X11.app. I'd like to use quartz-wm not as a window manager, but to provide the pasteboard integration with Aqua using the --only-proxy flag (see the man page). If I add the following line to .xinitrc: exec /usr/bin/quartz-wm --only-proxy & then WindowMaker never starts, complaining that there's already a window manager running. Is it possible to get the two to play nicely together, or is proxy feature part of the Xquartz server now? It seems that the Xquartz manpage has a number of pasteboard-to-clipboard synchronisation settings, but it's not clear whether quartz-wm needs to be running for those to work.

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  • Postfix on Snow Leopard unable to send MIME emails, including header contents in message body

    - by devvy
    I configured postfix on snow leopard by adding the following line to /etc/hostconfig: MAILSERVER=-YES- I then configured postfix to relay through my ISP's SMTP server. I added the following two lines in their respective places within /etc/postfix/main.cf: myhostname = 1and1.com relayhost = shawmail.vc.shawcable.net I then have a simple PHP mail function wrapper as follows: send_email("[email protected]", "[email protected]", "Test Email", "<p>This is a simple HTML email</p>"); echo "Done"; function send_email($from,$to,$subject,$message){ $header="From: <".$from."> "; $header.= 'MIME-Version: 1.0' . " "; $header.= 'Content-type: text/html; charset=iso-8859-1' . " "; $send_mail=mail($to,$subject,$message,$header); if(!$send_mail){ echo "ERROR"; } } With this, I am receiving an e-mail that appears to be improperly formatted. The message header is showing up in the body of the e-mail. The raw message content is as follows: Return-Path: <[email protected]> Delivery-Date: Tue, 27 Apr 2010 18:12:48 -0400 Received: from idcmail-mo2no.shaw.ca (idcmail-mo2no.shaw.ca [64.59.134.9]) by mx.perfora.net (node=mxus2) with ESMTP (Nemesis) id 0M4XlU-1NCtC81GVY-00z5UN for [email protected]; Tue, 27 Apr 2010 18:12:48 -0400 Message-Id: <[email protected]> Received: from pd6ml3no-ssvc.prod.shaw.ca ([10.0.153.149]) by pd6mo1no-svcs.prod.shaw.ca with ESMTP; 27 Apr 2010 16:12:47 -0600 X-Cloudmark-SP-Filtered: true X-Cloudmark-SP-Result: v=1.0 c=1 a=VphdPIyG4kEA:10 a=hATtCjKilyj9ZF5m5A62ag==:17 a=mC_jT1gcAAAA:8 a=QLyc3QejAAAA:8 a=DGW4GvdtALggLTu6w9AA:9 a=KbDtEDGyCi7QHcNhDYYwsF92SU8A:4 a=uch7kV7NfGgA:10 a=5ZEL1eDBWGAA:10 Received: from unknown (HELO 1and1.com) ([24.84.196.104]) by pd6ml3no-dmz.prod.shaw.ca with ESMTP; 27 Apr 2010 16:12:48 -0600 Received: by 1and1.com (Postfix, from userid 70) id BB08D14ECFC; Tue, 27 Apr 2010 15:12:47 -0700 (PDT) To: [email protected] Subject: Test Email X-PHP-Originating-Script: 501:test.php Date: Tue, 27 Apr 2010 18:12:48 -0400 X-UI-Junk: AutoMaybeJunk +30 (SPA); V01:LYI2BGRt:7TwGx5jxe8cylj5nOTae9JQXYqoWvG2w4ZSfwYCXmHCH/5vVNCE fRD7wNNM86txwLDTO522ZNxyNHhvJUK9d2buMQuAUCMoea2jJHaDdtRgkGxNSkO2 v6svm0LsZikLMqRErHtBCYEWIgxp2bl0W3oA3nIbtfp3li0kta27g/ZjoXcgz5Sw B8lEqWBqKWMSta1mCM+XD/RbWVsjr+LqTKg== Envelope-To: [email protected] From: <[email protected]> MIME-Version: 1.0 Content-type: text/html; charset=iso-8859-1 Message-Id: <[email protected]> Date: Tue, 27 Apr 2010 15:12:47 -0700 (PDT) <p>This is a simple HTML email</p> And here are the contents of my /var/log/mail.log file after sending the email: Apr 27 15:29:01 User-iMac postfix/qmgr[705]: 74B1514EDDF: removed Apr 27 15:29:30 User-iMac postfix/pickup[704]: 25FBC14EDF0: uid=70 from=<_www> Apr 27 15:29:30 User-iMac postfix/master[758]: fatal: open lock file pid/master.pid: unable to set exclusive lock: Resource temporarily unavailable Apr 27 15:29:30 User-iMac postfix/cleanup[745]: 25FBC14EDF0: message-id=<[email protected]> Apr 27 15:29:30 User-iMac postfix/qmgr[705]: 25FBC14EDF0: from=<[email protected]>, size=423, nrcpt=1 (queue active) Apr 27 15:29:30 User-iMac postfix/smtp[747]: 25FBC14EDF0: to=<[email protected]>, relay=shawmail.vc.shawcable.net[64.59.128.135]:25, delay=0.21, delays=0.01/0/0.1/0.1, dsn=2.0.0, status=sent (250 ok: Message 25784419 accepted) Apr 27 15:29:30 User-iMac postfix/qmgr[705]: 25FBC14EDF0: removed Two other people in the office have followed the exact same process and are running the exact same script, version of snow leopard, php, etc. and everything is working fine for them. I've even copied their config files to my machine, restarted postfix, restarted apache, all to no avail. Does anyone know what steps I could take to resolve the issue? This is boggling my mind... Thanks

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  • How can I install CentOS without a keyboard, mouse, or monitor?

    - by user1032531
    I will be buying a new computer which will be used as a CentOS server. I will put it on my home LAN, and once it is set up, will access it only through SSH. I don't want to spend a lot of money (maybe $500), and I don't want to buy another monitor or keyboard just to through them away after the server is setup. My question is how do I access the computer without a keyboard and monitor when I install the operating system? For media, I can use either the DVD or an ISO on the USB, so am good there. But how do I see what I am doing and enter commands without a monitor or keyboard? I have a Window 7 laptop, an XP laptop, and a CentOS laptop. Can I use one of my laptops to act as the MMI (Man Machine Interface)? If not, what is the easiest and least expensive option? Thank you

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  • How to bypass AllowTCPFowarding=no by installing own forwarder?

    - by Eric B.
    In the man pages for sshd_config, for the AllowTCPForwarding option, it states: AllowTcpForwarding Specifies whether TCP forwarding is permitted. The default is “yes”. Note that disabling TCP forwarding does not improve security unless users are also denied shell access, as they can always install their own forwarders. How do I install my own forwarder? I have a remote server in which I disabled TCPForwarding a long while ago. I would like to "enable" it for myself only, by using my own forwarder, while keeping the forwarding closed to the other users. I've looked around, but cannot seem to find the right pkgs to accomplish this. Can anyone please elaborate? Thanks! Eric

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  • Why does cd print when run in command substitution?

    - by reasgt
    If I use the 'cd' BASH built-in in a command substitution, it prints extra stuff to stdout, but only when piped to, eg., less. $ echo `cd .` # The output is a single newline, appended by echo. $ echo `cd .` | less # less displays: ESC]2;my.hostname.com - tmp/testenv^G (END) What's going on there? This behavior isn't documented in the bash man page for cd. Obviously, running just 'cd' in a command substitution is silly, but something like NEWDIR=`cd mypath; pwd` could be useful. I solved this by instead using NEWVAR=`cd mypath > /dev/null 2>&1; pwd` but I still want to know what's going on. Bash Version: GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2005 Free Software Foundation, Inc. Distro: Scientific Linux SL release 5.5 (Boron)

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