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Possible to change the NAT timeout?

Discussion in 'Sveasoft Firmware' started by jbourne, Sep 24, 2005.

  1. jbourne

    jbourne Network Guru Member

    I have a strong feeling there is a default NAT timeout set somewhere, because idle connections time out after some time (I haven't timed how much time, but still happens). Can I change that?

    ipchains -M -S used to work in the old Linux kernels, but I don't know how to do this with iptables; is there something in /proc perhaps?

    Cheers,

    -jB
     
  2. wcattey

    wcattey Network Guru Member

    How DO we keep idle sessions alive?

    All over the place I see people asking the question:

    How do I make my router stop trashing connections
    that have been idle for 10 minutes?

    But I never see any answers.

    Is this an ARP cache timeout?
    A NAT timeout?
    Misguided housekeeping?

    Microsoft solves this problem by having an incorrect TCP implementation that's chatty when it should be silent. I don't allow Microsoft in the house.

    On my Mac, the YIM client offers two options:
    * Normal protocol which crashes after 10 mins of no traffic.
    * HTTP protocol with no audio or video.

    Yes, I can kludge my ssh connections to have keep-alives,
    but what about other things like YIM?

    How do I turn this 10 minute timeout OFF?
     
  3. wcattey

    wcattey Network Guru Member

    Answering my own question: Buy WRT54GL not WRT54G

    I'll follow up in other topic threads, but in case anyone is watching this thread:

    I tried a Netgear wgr614 and the Linksys WRT54G (v5) and they BOTH trashed idle connections after 10 minutes.

    I tried the Linksys WRT54GL (which is really a WRT54G v4 repriced and in a different box). The older firmware base worked just FINE. NO trashed idle connections! Things stay up for days if necessary, and for me that IS my requirement.

    So, use v4 if you've got it. If you're buying new, AVOID the new v5 WRT54G, and go for the WRT54GL.
     

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