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Network problem - traffic not making it through!

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  • montybrit
    Hello, So, I ve moved open vpn from a windows box to the slug and have a new problem. I have two clients, an XP and a linux client. Before the move I could
    Message 1 of 1 , Mar 11, 2008
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      Hello,

      So, I've moved open vpn from a windows box to the slug and have a new
      problem. I have two clients, an XP and a linux client. Before the move I
      could ping both clients from the server, and both clients could ping the
      server.

      Now the slug is acting as a server, I can ping the XP client but not the
      linux client. Both clients can ping the server.

      Running tcpdump -i tap0 -n icmp it seems that the ping request is coming
      back from the linux client but then gets swallowed somewhere.

      I'm at my current limit on networking knowledge - can anyone help on
      what I should look at now? I don't have iptables or any other firewall
      that I'm running (AFAIK). I've also pasted the ps results in case I'm
      missing something there.

      Thanks - Bryan.

      tcpdump: WARNING: tap0: no IPv4 address assigned
      tcpdump: verbose output suppressed, use -v or -vv for full protocol
      decode
      listening on tap0, link-type EN10MB (Ethernet), capture size 68 bytes
      09:45:14.181503 IP 10.192.168.9 > 10.192.168.1: ICMP echo request, id
      17719, seq 0, length 64
      09:45:14.201809 IP 10.192.168.1 > 10.192.168.9: ICMP echo reply, id
      17719, seq 0, length 64
      09:45:15.158449 IP 10.192.168.9 > 10.192.168.1: ICMP echo request, id
      17719, seq 1, length 64
      09:45:15.181132 IP 10.192.168.1 > 10.192.168.9: ICMP echo reply, id
      17719, seq 1, length 64
      09:45:16.168513 IP 10.192.168.9 > 10.192.168.1: ICMP echo request, id
      17719, seq 2, length 64
      09:45:16.190803 IP 10.192.168.1 > 10.192.168.9: ICMP echo reply, id
      17719, seq 2, length 64
      09:45:19.208634 IP 10.192.168.9 > 10.192.168.5: ICMP echo request, id
      17720, seq 0, length 64
      09:45:19.344341 IP 10.192.168.5 > 10.192.168.9: ICMP echo reply, id
      17720, seq 0, length 64
      09:45:20.219029 IP 10.192.168.9 > 10.192.168.5: ICMP echo request, id
      17720, seq 1, length 64
      09:45:20.339420 IP 10.192.168.5 > 10.192.168.9: ICMP echo reply, id
      17720, seq 1, length 64
      09:45:21.229120 IP 10.192.168.9 > 10.192.168.5: ICMP echo request, id
      17720, seq 2, length 64
      09:45:21.359373 IP 10.192.168.5 > 10.192.168.9: ICMP echo reply, id
      17720, seq 2, length 64


      root@slug:/etc/openvpn$ <mailto:root@slug:/etc/openvpn$> ps
      PID Uid VmSize Stat Command
      1 root 288 S init [3]
      2 root SWN [ksoftirqd/0]
      3 root SW< [events/0]
      4 root SW< [khelper]
      5 root SW< [kthread]
      38 root SW< [kblockd/0]
      41 root SW< [khubd]
      56 root SW [pdflush]
      57 root SW [pdflush]
      58 root RW< [kswapd0]
      59 root SW< [aio/0]
      81 root SW [mtdblockd]
      82 root SW [nftld]
      167 root SW< [scsi_eh_0]
      168 root SW< [usb-storage]
      192 root SW< [kjournald]
      238 root 360 S < udevd --daemon
      596 root SW< [kjournald]
      813 root 396 S /sbin/syslogd -n -O /var/log/messages -m 20
      815 root 320 S /sbin/klogd -n
      919 root 440 S /usr/sbin/sshd
      944 root 332 S /usr/sbin/xinetd -pidfile /var/run/xinetd.pid
      965 root 284 S /usr/sbin/cron
      977 root SW< [cifsoplockd]
      978 root SW< [cifsdnotifyd]
      1007 root 232 S /sbin/getty 115200 ttyS0
      3349 root 6660 S python /opt/pyTivo/pyTivo.py
      6089 root SW [cifsd]
      9142 root 1152 S /usr/sbin/nmbd -D
      9143 root 2024 S /usr/sbin/smbd -D
      9144 root 1216 S /usr/sbin/winbindd
      9145 root 1532 S /usr/sbin/winbindd
      9146 root 1596 S /usr/sbin/smbd -D
      9150 root 1100 S /usr/sbin/winbindd
      17384 root 1988 S sshd: root@pts/0 <mailto:root@pts/0>
      17389 root 964 S -sh
      17584 root 2004 S sshd: root@pts/1 <mailto:root@pts/1>
      17588 root 852 S -sh
      17706 root 2080 S /usr/sbin/openvpn --daemon --writepid
      /var/run/openvp
      17723 root 752 R ps




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