Re: Trying to Figure out What's OK and What to Block

In article <4uo312t5qp4me94i3rg9bgc9v91781qtl4@xxxxxxx>,
fishlips@xxxxxxxxxxxxxxxxxxxxxxxxx says...
I have a Win Xp computer that I can't seem to get working right on the
internet.

I have a broadband connection and a router. The other computer
connected to the same router works fine.

I had the old version of Kerio (2.1.5) on both, I switched to the free
Tiny firewall on the problem computer just to see if the firewall was
the problem.

When I first start it it works fine. After a while I cannot connect
to anything on the internet unless I reboot.

I am trying to set up the rules so that I block everything that
doesn't need to connect to the internet.

One thing I am not sure of is something identified only as "SYSTEM"
which looks like it wants to send and recieve UDP traffic to the
router and send and recieve to and from the other computer.

Could blocking this be causing me to lose the internet connection?

I do not use the router as a way to network the two computers. I only
use it to allow each computer onto the internet. So there is no
logical reason for the computers to be talking to each other. Usually
it says something to the effect that one computer wants to send a UDP
datagram to the other computer on port 137. Should I allow this?

It's pretty easy to get lost in a nightmare of rules, popups and other
nonsense when you try to control things like that. Since you're already
covered inbound by the router, it would be better to just skip the
software firewall and try using some common sense and keep any bad
programs off the computer to begin with. Otherwise, you'll find
yourself blocking normal things that need to communicate and the bad
stuff will likely slip thru anyway. Best to keep it simple.

--
Kerodo
.

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