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I've inherited an ASA5550 which is missing its SSM-4GE-INC - it was taken out to upgrade a 5540, which is now in production elsewhere in the enterprise. Trouble is, now the 5550 will not boot, it gets stuck after a panic message, ...
I have GRE/IPSec tunnels created to a remote site in Tashkent, Uzbekistan, running fine for over a year. Recently, the site went offline, troubleshooting shows that while some traffic is still flowing (UDP/500-IKE, TCP/23-Telnet, etc.), ESP packets ...
Thanks for the reply. NAT-T is UDP only (port 4500), and will auto-negotiate as you mentioned, but ONLY if it detects a NAT in the path, which can be introduced by a NAT-on-a-stick approach. Tested this and works fine, but if the state blocks ESP, ...
