How do you allow your firewall to ping the internet ?
I have had the network working for over a year but when I try to ping from the firewall to the internet or anything for testing it just give me ?????. I am assuming it is a acl issue. I have access-list 101 extended permit icmp any any on the first line. That should allow the access correct?
When you test what is the IP that you are trying to ping? Also are you connected directly to your ISP on the public interface or is there any other device with the capability of blocking ICMP request or replies.
You can setup a capture on the external interface and if you see that the packet is captured most likely the block is outside your device.
EX capture interface outside match icmp host (public ip of the firewall) host 220.127.116.11
FYI icmp inspection is required for traffic that traverses the firewall. Since the traffic is started on the public interface to the internet this command is not required.
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...