October 7th, 2005, 01:07 PM
October 7th, 2005, 01:44 PM
A TCP connection is setup using a "three-way handshake". This means a series of packets in order SYN, SYN/ACK and an ACK..
A SYN port attack probably means somebody tried to setup a connection (first SYN packet) to a port on your computer. Your firewall should block all connection attempts, check to make sure. If correctly blocked you can safely ignore these alerts. You'll get a lot of them, thanks to all the viruses running rampant on the Internet..
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October 7th, 2005, 02:20 PM
Even though i knew tcp sync. process, i wasnt able to figure out what the term means
October 7th, 2005, 05:45 PM
Without actually seeing what your firewall triggered on to give the alert the syn can be used for several things, one of which is a denial of service attacks(SYN Flooding).
The other could be an attempt to fingerprint your OS, I can't think of a time that it wouldn't be sent to a port. It could be your vendors way of generalizing the many malicious uses of a syn packet and just name the alert "SYN Port Attack"
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