ISA - All Open and Allow rule is closing outgoing connections.
Posted on 2006-06-19
I have created an all open and allow rule in ISA 2004 that allows all outbound traffic to external.
I have noticed a few things about our network that is confusing:
1: The All Open and Allow rule is closing alot of outgoing connections, the strangest part about it, is that the connectsion are heading to unknown port numbers and IP addresses i dont recognise. in particular port 34568, 7247, 54862 and a few others.
2: I have lost email access to the internet after an automatic server update was installed by microsoft. Since this update i have not been able to send or recieve email via outlook (PoP3, SMTP).
I do not understand alot about ISA 2004 and have been browsing through isaserver.org which seems to be a really good site, but havent been able to work out why this is hapening.