Network traffic: ttl

From: Tomek Tylec (my-buziaki_at_interecho.com)
Date: 11/29/04

  • Next message: Eli Dart: "Re: FreeBSD 5.3 Networking performance problem" 
    To: freebsd-net@freebsd.org
Date: Mon, 29 Nov 2004 17:24:18 +0100

    I found that gateway I use, sometimes receives packets from my FreeBSD
    5.3 box with ttl 63. But when I dumped tcp packets (with tcpdump) that
    are send from my computer, they always got ttl 64.

    Moreover Linux (Fedora Core 2) running on same computer don't have such
    problems.

    Also older versions of FreeBSD (5.2.1 for example) work fine (ttl is always
    correct).

    It's specially important for me, because my ISP, that owns gateway, use
    simple method to check if he have illegal clients - firewall on gateway
    drops packets with odd ttl.

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  • Next message: Eli Dart: "Re: FreeBSD 5.3 Networking performance problem"

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