Hi

No, you cannot telnet to the outside interface of the pix. You have 2 options

1) Set up an IPSEC tunnel to the pix for management

2) use ssh to access the firewall.

Note that you don't need an acl for this you need the following line in the config

ssh "ip address allowed" "netmask" outside

To set up ssh you need to make sure the pix has

1) hostname

2) domain name

then you need to generate rsa keys on the pix and then save them with the "ca save all" command. Just doing a wr mem will not save you rsa keys.

HTH

Jon