Chris,

On Wed, 05 Feb 2003 13:38:32 PST Chris Low wrote:

> 
> > > Feb 4 17:29:52 Nimrod kernel: Packet log: input REJECT eth1 PROTO=17
> > > 10.10.10.2:4813 10.0.0.14:161 L=84 S=0x00 I=58236 F=0x0000 T=128 (#39)
> >This is a machine broadcasting/requesting SNMP service. Are one of
> >your boxes managing the ouside router or being polled for SNMP info?
> 
> The only thing currently behind the firewall is an NT4 box for testing 
> purposes. I checked it under control panel > services for SNMP but there 
> wasn't anything listed.

This is a WAG, but sometimes M$ machines will spew SNMP requests
to printers they have configured.  I suspect the "SNMP service"
is a daemon that listens for requests, not an agent which polls
SNMP-enabled devices.  Is 10.10.10.2 the NT server's address?
Do you recognize the 10.0.0.14 address?

[RIP SILENT_DENY question snipped since I don't know the answer.]

> Also, I'm now getting the following message in my logs that I wasn't 
> getting before (at least I didn't notice them before):
> 
> input DENY eth0 PROTO=17 0.0.0.0:68 255.255.255.255:67 L=338 S=0x00 I=0 
> F=0x0000 T=128 (#5)

A machine on the network hooked to eth0 (typically the external
interface) is requesting a DHCP lease.  It doesn't have an
address yet, so it uses the address 0.0.0.0 and broadcasts the
request to everyone who is listening (255.255.255.255).

HTH,
Brad



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