zhaqinさんASAのsessionタイムアウト値についてしらべています。>ASA の timeout を変更していないなら、デフォルトでは tcp connection が 1時間の timeout になります。こちらのソースになるリンク先をおしえていただきたいのですがいかがでしょうか。

When Reverse Lookup Zones was put in the setting of DNS, it solved it.

I am confronted with the same problem, too. The environment is also the same. (All server and computer are in same VLAN and use same DNS.)I want to know the method of settlement if it has already solved it.

Thanks for everyoneIt has recovered when the second port is set 

Hello IwaiBugID was not found though the release note of "ES4102" was seen. Please teach bugID.