Re: Re: ipip-tunnel specifications : where ?

From: Mike Murphree (kofibll@10art-ni.co.jp)
Date: Mon Sep 18 2000 - 19:06:07 EEST

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    Ok, you're the second reply, but missing the point...

    The protocol is 4, but the port number used is a
    different quantity, i.e. ftp=21, smtp=25, telnet=23,
    ssh=22, http=80, etc....

    I can block within the firewall based on protocol, ip
    address, *and* port number. I don't trust any form of
    NOS to perform this function.

    Mike

    >
    > From: Steve Meuse <terhi.victor@logonet.com>
    >
    > It is IP protocol number 4, that is, it's on the same level in the stack as
    > TCP or ICMP.
    >
    > -Steve
    >
    >
    > At 06:40 AM 09/18/2000 -0700, Mike Murphree wrote:
    >
    > >What ports does this service use? I need to make
    > >allowances for it in my firewall. Also does anyone
    > >have any experience with using the FreeBSD 'nos-tun'
    > >function with the Linux equivalent?
    > >
    > >Thanks,
    > >Mike N4CNW
     

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