After upgrade my PIX OS from 6.3.4 to 8.0.2 my telnet sessions from the central site to remote site (remote was updated) does not work (I'm tring to telnet inside interface from remote site). no config was changed. I searched release notes but not see anything related this.
Follow a trace
output-interface: NP Identity Ifc
Drop-reason: (telnet-not-permitted) Telnet not permitted on least secure