Firewall Wizards mailing list archives

UDP 500 and IP 50

From: "Patrick Bryan" <pbryan () swedishamerican org>
Date: Sat, 20 May 2000 07:13:22 -0500

Hi,

We have a vendor that has asked that we open UDP 500 and allow IP protocol 50 to pass our firewall. Two questions 
here.. 1) What is running on UDP 500, and what is IP 50 doing? Something similar to GRE(47)? The vendor claims they 
need this to establish a connection to their VPN. Any input would be greatly appreciated.


Patrick Bryan
Network Analyst
SwedishAmerican Health System

Current thread:

UDP 500 and IP 50 Patrick Bryan (May 21)