Two errors -- security issues? (Error 17810 & 18736)
-
I'm on SQL Server 2012 SP3 and last night I got two odd errors that I don't know if they're related.
In my SQL Server logs I see two error messages of:
Error: 17836, Severity 20, State: 17
Length specified in network packet payload didnot match number of bytes read; the connection has been closed. Please contactthe vendor of the client library. [CLIENT: xx.xx.xx.xx]and then a few hours later I see:
Error: 17810, Severity: 20, State: 2
Could not connect because the maximum number of'1' dedicated administrator connections already exists. Before a new connectioncan be made, the existing dedicated administrator connection must be dropped,either by logging off or ending the process. [CLIENT: xx.xx.xx.xx]The ip address is the same in both error messages.
No one is using the DAC connection now, I checked with:
SELECT *
FROM sys.dm_exec_sessions
WHERE endpoint_id = 1
And I was able to connect to the DAC myself through SSMS this morning. I did a nslookup on the ip address, and it gives me a server and an address. I guess I need to go talk with the networking guys.Who was using the DAC connection? Is there a DMV to show the historical usage? How should I investigate these error messages further?
Thanks,
Rob -
Mystery solved. I talked with our network folks, and these errors are from our network scanner. New and interesting things to discover on a new system.
Thanks,
Rob
Viewing 2 posts - 1 through 2 (of 2 total)
You must be logged in to reply to this topic. Login to reply