Is there a tool out there that can show me the # of established connections, per second, on a specific port?
We have an application that listens on a custom port that was developed by a 3rd party. there's no internal tools provided by them that tracks the # of established socketed connections to a specific port. THey're using a Java SocketServer Class library, but i don't know much more than that.
we were using netstat -an to try and get some data about this, but as you know, it doesnt' really count established connections, and i can't find a way to limit to just one port.
i also saw that MS PERFMON has a TCP counter that's "established connections" but that's not per port (server only).
what i'm trying to do is some testing to trend the # of established connections to a particular port for a 2 minute interval.
any advice would be great.
asked 11 Apr '11, 09:05
You can use wireshark's IO graph. The final ACK of the 3-way-handhsake has tcp.len=0 and SEQ=1 and ACK=1 (when using relative sequence numbers). So you can create an IO graph based on that filter.
You might want to change the tick frequency and/or pixels per tick to get a nicely formatted graph.
answered 11 Apr '11, 11:22
edited 11 Apr '11, 14:17
You might also want to look at the answer given to your other question
answered 11 Apr '11, 14:19