What may be causing these errors?

[Matthew Carpenter]

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Sorry, my bad.
3 Destination Unreachable -> 13  Communication Administratively 		
				Prohibited      [RFC1812]

This wreaks of Cable modem (one broadcast domain for a lot of customers?)

David Bandel wrote:
| On Sat, 18 Dec 2004 10:25:12 -0700, Dr. Jones <drjones at vii.com> wrote:
|
|>I get the following errors, seen upon rebooting while closing systems
|>down, and then again during boot up. I would love to figure out where
|>they are from and how to fix my system to prevent this:
|>
|>Dec 12 06:47:16 scott syslogd 1.4.1#16: restart.
|>Dec 12 06:54:22 scott kernel: 166.70.4.82 sent an invalid ICMP type 3,
|
|
| ICMP Type 3 is destination unreachable.  No subtype given (odd).
|
|
|>code 13 error to a broadcast: 255.255.255.255 on eth0
|
|
| broadcast to 255.255.255.255 is usually reserved for DHCP discovery,
| but M$ makes broad (and incorrect) use of this broadcast address.
|
|
|>Dec 12 07:06:22 scott kernel: 166.70.4.82 sent an invalid ICMP type 3,
|>code 13 error to a broadcast: 255.255.255.255 on eth0
|>
|>My network interface card is eth0......my ISP is at 166.70.xxx.xxx.
|
|
| Yes, but is your system 166.70.4.82 or is that another of your ISPs
| clients? I suspect it's just a Windoze system doing normal Windoze
| stuff (violating every RFC on the planet to talk to other Windoze
| systems and confuse the over 120+ other operating systems using the
| Internet).
|
|
|>These errors seem to continue despite clean shutdown and reboot......
|>
|>Any ideas on what could be causing this?
|>
|>Scott
|>
|>--
|>Dr. Scott S. Jones
|>Hands-On Chiropractic
|>IRC: irc.freenode.net #utah
|>Yahoo: sanchiro12
|>
|
|
| Ciao,
|
| David A. Bandel

- --
Matthew Carpenter
matt at eisgr.com                          http://www.eisgr.com/

Enterprise Information Systems
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* Security Consulting, Incident Handling & Forensics
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