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Stuart Smith

Kubuntu 16.04 host: TCP possible SYN flooding?

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Switched host machine from Kubuntu 15.04 to 16.05 this week. I'm still having an occasional drop of connectivity from my linux host to my windows clients, usually involving clipboard use. Client-to-host Cut-n-paste hasn't worked for me since 1.6. Currently using 1.7.6. Now I'm seeing a new issue: I noticed an occasional browser lag on my host (Kubuntu 16.04) PC. Being a new OS release, I did some checking and discover this in my log files: TCP: request_sock_TCP: Possible SYN flooding on port 22000. Sending cookies. Check SNMP counters I'm using port 22000 instead of the default and not using ssl. Any suggestions on how to track this down?

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