bduffy120
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Firewall/Port information
Hi,
I believe I have an okay understanding of how port numbers work. I just bought a router and firewall software. I need to know how do I configure the firewall, in other words, how do I know which local ports to block to avoid intruders. Thanks for any help on this.
I believe I have an okay understanding of how port numbers work. I just bought a router and firewall software. I need to know how do I configure the firewall, in other words, how do I know which local ports to block to avoid intruders. Thanks for any help on this.
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go to www.grc.com and test your sheilds and scan your ports
chances are they are already blocked, and you may be back here asking how to open some (for games, etc)
chances are they are already blocked, and you may be back here asking how to open some (for games, etc)
inless you are running a www or mail server, do not open port 80 or 110... you will still be able to get to the web and get your mail with these ports closed since your firewall sees that these connections were started from the "inside" and not the "outside" so it will allow them to come thru. If you do open these ports you will have to do port forwarding to direct them to a particular machine on the inside since what is actually going on is PAT (port address translation).
80 - HTTP - Internet, 110 - pop3 - email etc. All port numbers are listed here:
http://www.iana.org/assignments/port-numbers