Packet filtering firewall question

[owen76]

I have recently become interested in packet filtering firewalls and I was curious as to what traffic is commonly let in and out. (IP?)
How does one exploit this and what are ways to patch it? Thank you for your time.

[kadeng]

Most firewalls have by default traffic allowed and blocked.
You can find this by looking at the options of your firewall.
Their you can see what s blocked and what s not by default.
Some have mutch used appz preconfig. by default[ie,icq]like Agnitum s firewall Outpost.

Your os needs updates[windows-update]
Or you can use Bigfix from bigfix.com[free]and cnet catchup[also free]


Goodluck and have a safe trip in cyberspace.

The loss of your frend............so bad
All the best from me!

[Guus]

Most commonly used ports are discussed in this thread.

[Ganjica]

Everything has exploits. Not everything has patches. It really depends on the product you buy.

[the_JinX]

Packet filters just close ports.
they are the real old style firewalls.
Even though the services run, you can't connect to the port..