Firewall - Strange behavior

You can read about DROP_CTINVALID and DROP_NEWNOTSYN here:

and see this post:

There are posts about DROP_NEWNOTSYN also.

I get LOTS of those messages also. I disabled both of these messages in with the top two Firewall logging settings:

As for the disconnection issue, please look for other log entries at the time of the disconnection.

Are there logs in the Border Router you can review also?