I've got an ASA 5520 (8.4.3) Failover Cluster.
Behind this ASA i have a couple of DMZ Networks. In one of these Networks (lets call it DMZ-A) i have an performance issue.
So, in DMZ-A i have 2 Windows2012R2 servers.
IP Server1: 10.0.233.10/24
IP Server2: 10.0.233.12/24
If i do an RDP session to Server1 from my Client Computer (at the inside Network - IP: 10.0.20.199) it is really slow. Also File Transfer is very slow. Ping gives me a "normal" replay.
If i do an RDP session to Server2 from my Client Computer everything works normal.
If i do an RDP session from Server2 to Server1 everything works normal.
I did a apcket capture to both servers, and when i analyse them with wireshark there is (at a sertain packet) a big difference. -> see attached files
ASA_10 -> 10.0.233.10
ASA_12 -> 10.0.233.12
Can anybody help me finding out whats going wong there?
Thanks a lot!!