FTP access thru an ASA5510 to an ftp server on the private had been working fine. Suddenly today there is no access from the outside but inside users have no problem.
I ran a packet trace with animation and the 5510 says the packets are being dropped by rule in the access list. I changed nothing in the access list and ftp has been working all along.
I can include a copy of the running config if you require it but on the assumption that the full list will not be required I can verify the access list for ftp is as follows...
access-list Internet_access_in extended permit tcp any host 184.108.40.206 eq ftp
access-list Internet_access_in extended permit tcp any host 220.127.116.11 eq ftp-data
I realize I haven't given you much to go on but I should add that extensive configuration changes were made to the ASA5510 to configure for VPN access so it is possible that something happened during the VPN work but all other services that have exactly the same format access lists continue to function normally. The only internal server I have lost outside access to is ftp. The mail server and VPN continue to function normally.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...