I'm dealing with my first Cisco ASA (a 5505), using the ASDM interface. I've got to forward HTTP, HTTPS, PPTP and another port to a couple of internal servers.
I'm pretty sure I've got it all figured out, and have successfully (I believe, haven't actually tested yet ;) ) created and applied Static NAT rules for everything above, except HTTPS.
Via the interface I can add the rule for 443, and all looks good, but when I hit [apply] I get the following error, and then the 443/HTTPS entry is removed:
[ERROR] static (inside,outside) tcp interface 443 192.168.0.151 443 netmask 255.255.255.255 tcp 0 0 udp 0 unable to reserve port 443 for static PAT
ERROR: unable to download policy
I've had no problems creating my other rules, and can still successfully create other port rules (i.e.: '4434' as a test) so now I'm at a loss, any ideas?
Thanks in advance.