1
vote
1answer
99 views

Cisco ASA 5500 - Internet connection dies when adding ICMP exception to firewall

When I add ICMP to be allowed both on inside / outside interfaces the internet connection dies. Does anyone know why this happens? I kind of observed that this behavior takes place not just for ICMP. ...
1
vote
0answers
116 views

Disable response from outside interface on ASA 5505 while allowing ping (and response from outside) on the inside interface?

On the ASA 5505 How do I allow icmp requests out (and responses back in) while not allowing a response from the outside interface when pinged.
4
votes
3answers
5k views

Denying ICMP type 3 code 4 traffic - good or bad?

Investigating a slow VPN connection (Cisco ASA IPSec) to a remote office, I noticed on our firewall a lot of access rule matches: Denied ICMP type=3, code=4 from *ip_address* on interface outside I ...
3
votes
1answer
37k views

How do you allow ICMP Echo Requests on a Cisco ASA 55xx Router?

I'm very new to managing Cisco equipment, so bear with me. I'm configuring a Cisco ASA 5505 router for my office, and I am reasonably competent enough with the console to configure the basics -- our ...