Re: blocking incoming udp packets

JClark wrote:

Hello Group:

My system: Desktop and laptop networked through Linksys wired router.

Question: My software firewall (Deerfield Visnetic) is constantly
logging blocks of incoming udp packets, the source being 192.168.1.1
(which is presume is the router), destination being 255.255.255.255 or
192.168.1.255.

This doesn't seem to interfere with anything, but just watching the
constant bombardment in the logging screen is annoying.

Can anyone explain what is going on here? Or what, if anything, I can
or should do about it?

I can set the firewall to block and stop logging all udp packets which
do not have a specific rule. This eliminates the constant screen
filling. But I'm not sure if I should do this. I really don't
understand what is happening, which is why I'm asking for help.

I guess I'm just concerned that my system may not be tweaked properly
and could be wasting resources. Perhaps I should change something in
the router setup via the web based configuration program.

Here are a couple of the log entries, copied:

2008/07/08, 05:32:18.406, GMT -0400, 2010, Device 3,
Blocked incoming UDP packet (no matching rule),
src=192.168.1.1, dst=255.255.255.255, sport=520,
dport=520

2008/07/08, 05:40:15.921, GMT -0400, 2010, Device 3,
Blocked incoming UDP packet (no matching rule),
src=192.168.1.1, dst=192.168.1.255, sport=8385,
dport=162

Thanks for any explanations, links to sites to educate me, or
suggestions.

Is UPnP enabled in the router? Try disabling it or check that it is
disabled.

http://en.wikipedia.org/wiki/Upnp
.

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