i had permit tcp any any established in my access-list 100 (used on the dialer interface inbound).
I recently removed it and users seem to have no problems browsing the web but i now notice a lot of dropped packets on port 80 from the web to my network.
Do I need this line in my access-list and does it present any risk to security.
The reason I removed it was because it seemed like the only rule that could have let through a spoofed packet on port 11- systat. My ISA Server caught that and dropped it so now I'm trying to ensure the Cisco Firewall is definately tight.