Jeff, A very comprehensive list of port assignments can be found at the Internet Assigned Numbers Authority (www.iana.org) website. The list is at:
http://www.iana.org/assignments/port-numbers My .02: If you are going to block all ports on the firewall (except those that are currently necessary), make sure you make the proper changes to your configuration before adding software that will utilize the disabled ports. I would keep a list on hand of exactly which ports are enabled/disabled, and I would make this list accessible to other IT personnel. Omar Sabek Implementation Engineer -----Original Message----- From: Jeff Beining [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 19, 2002 1:43 PM To: '[EMAIL PROTECTED]' Subject: FW: Help With firewall ports I think he wants help with - and if I'm wrong, then I'll ask it, because I've been looking for something like this - what each port is used for. Does anyone know of a list or a resource that will tell me what all the ports listed in /etc/services are for, or what uses them, or a general list of ports and services that use them??? -J -----Original Message----- From: Jeff Kerber [mailto:[EMAIL PROTECTED]] Sent: Monday, March 18, 2002 4:51 PM To: Clint Goodwin; security-basics Subject: RE: Help With firewall ports Clint, You're approaching this from the wrong angle... Don't look at what ports you should block, look at the ports you need open. Open only those that are necessary. Close everything else. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Clint Goodwin Sent: Sunday, March 17, 2002 4:47 AM To: security-basics Subject: Help With firewall ports Hi all, I was wondering what would be a good list of ports to block at my firewall. I have some of the most common ones covered , however I Don't have a lot of experience with firewalls yet. Can someone point me to a good resource or even provide me with a list to help me get started. Thanks in advance Clint Goodwin _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
