linked server problem after few mins

Dear All,

Before i get crazy please help me out, i have creatd a linked server between sql 2005 and sql 2000.

The security of linked server is how,

that i have used a window authitcation accout like domain\user and i m using this account as impersonate and with the option that "be made with the login's current security context".

Now the problem is when i used the application it is working fine, but after if login the applciation with a break of 15 mins or half an hour, i get the error

TCP Provider: An existing connection was forcibly closed by the remote host.\r\n\r\nLogin failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection."

I am unbale to undersatnd that why it so, y it fails after few mins, and if i check the particular Sp from backend it is working fine.

Moreover if a again create the link server with same setting as mentioned above it will work fine, but again after half an hour it will come up with same problem.

But if i create linked server with sql account that is available on both server using option "be made using this security context" every thing is working fine.

please help why problem in 1st case, and if my concept regarding linked server security is confusing do let me know any good link

Thnx

l

Sound like you're experiencing SynAttackProtect protection.

http://msdn2.microsoft.com/en-us/library/ms189083.aspx