North American Network Operators Group
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Re: UDP port 137 Question

  • From: Joe Provo - Network Architect
  • Date: Wed Jan 07 10:30:02 1998 
>One would hope the backbones aren't passing 255.255.255.255 around to come
>in via his Internet connection
You would be surprised at the *source* addresses on packets that hit some
of my borders:

[typical 1918 addresses clipped]
    deny   ip 127.0.0.0 0.255.255.255 any (56 matches)
    deny   ip host 0.0.0.0 any (1818 matches)

I find source 0/0 to be truly entertaining.

Cheers,

Joe
--
Joe Provo, Network Architect                         508.229.8400 x3006
Network Operations Center                            Fax   508.229.2375
UltraNet Communications, Inc.                        <[email protected]>