changing the ToS in IP Header

From: Ashish Kulkarni (ashish_at_symonds.net)
Date: 05/26/03

  • Next message: clark shishido: "Re: Best serial console server construction method?" 
    Date: Mon, 26 May 2003 19:51:04 +0530 (IST)
To: <freebsd-hackers@freebsd.org>

    Hello,

    Is there any way in which I can manipulate the Type of Service (TOS) byte
    in the IPv4 header? I need to set the TOS bits on all outgoing packets from
    my box to the ISP to a particular pattern (0x02), as otherwise the ISP does
    not forward packets. I have been able to do this in Linux using the
    iptables mangle table:

    http://www.tldp.org/LDP/nag2/x-087-2-firewall.tos.manipulation.html

    but am unable to find a similiar packet-mangling feature in the firewalls
    running on FreeBSD...there are rules for matching on TOS pattern, but not
    on TOS manipulation. Does anyone know of any tool which can do this?

    As an alternative solution, is there any way to set the default TOS via a
    sysctl interface (similiar to that of TTL, namely net.inet.ip.ttl)? I'm
    planning to use this on my home box, so I have no problems in trying to
    patch and rebuild the kernel if I can get some feedback and/or tips on how
    to do so :-)

    Thanks,
    Ashish.

    ps: can you please CC any replies to me? thanks...

    _______________________________________________
    freebsd-hackers@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
    To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"

  • Next message: clark shishido: "Re: Best serial console server construction method?"

    Relevant Pages

    • changing the ToS in IP Header
      ... Is there any way in which I can manipulate the Type of Service (TOS) byte ... I need to set the TOS bits on all outgoing packets from ... but am unable to find a similiar packet-mangling feature in the firewalls ...
      (freebsd-questions)
    • Re: changing the ToS in IP Header
      ... > Is there any way in which I can manipulate the Type of Service byte ... I need to set the TOS bits on all outgoing packets from ... > my box to the ISP to a particular pattern, ...
      (freebsd-hackers)
    • Re: IEEE 802.11 Wireless Multimedia Extension (WME) and raw sockets
      ... I've been playing around with WME to test various network performance, ... It uses raw sockets to transmit ... the IP packets. ... "BEST EFFORT" no matter what value my application set the TOS field as. ...
      (freebsd-net)
    • Re: IEEE 802.11 Wireless Multimedia Extension (WME) and raw sockets
      ... I've been playing around with WME to test various network performance, ... It uses raw sockets to transmit ... the IP packets. ... "BEST EFFORT" no matter what value my application set the TOS field as. ...
      (freebsd-questions)
    • Re: changing the ToS in IP Header
      ... not on per socket basis. ... changing the ToS in IP Header ... I need to set the TOS bits on all outgoing packets from ...
      (freebsd-hackers)