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Hi All, ive a strange problem in routing: ive a complex net: Lan: 10.128.0.0/255.255.255.0 gw->10.128.0.1 (ubuntu as firewall) a terminal server in the lan ->10.128.0.203 this terminal server with wvdial ...
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  1. #1
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    Italy, Florence
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    Routing Problems


    Hi All, ive a strange problem in routing: ive a complex net:
    Lan: 10.128.0.0/255.255.255.0 gw->10.128.0.1 (ubuntu as firewall)
    a terminal server in the lan ->10.128.0.203
    this terminal server with wvdial takes up a ppp0 interfaces to another server outside (ppp0 up is 192.168.0.5, remore is 192.168.0.2).
    I want to contact the remote server from lan (so from 10.128.0.89, my pc, to 192.168.0.2). I set up so:
    a static route in the firewall (route add -net 192.168.0.0 gw 10.128.0.203)
    in terminal server i added a line in iptables for having a SNAT from 10.128.0.0 to 192.168.0.5, and a route similar to this->route add -net 192.168.0.0 gw 192.168.0.5, this because i want to contact other pcs behind the remote server.
    The link is ok, from terminal server i can ping remote server, and the pcs behind it, but from lan i cant. Any idea?
    Thanks u all!!
    P.S. sorry for my english

  2. #2
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    Sep 2008
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    Italy, Florence
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    ok i solved the problem, i feel veeeeeeery STUPID. i forgot the magic command

    echo 1 >sys/proc/net/ipv4/ip_forwarding

    and all went ok

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