Hi!
I'm looing for a simple way to define a monitor on a TCP port, to discover connection of other node.
Something like Netstat command, but without the need to use SAM applic....
Can it be?
Yes or no, depending. http://tinyurl.com./e6m6
there is some key information missing here -- like the port numbers, do you mean 'listening for a connection' or 'a connection is established'
let me point you at this to give you some ideas: How to Detect and Clear Hung TCP Connections using SNMP - Cisco
shows the mib variables available and what you might be able to do using a UnDP
Thanks for the reply!
Maybe I'll be more detailed...
I need to verify whether a node (IP address) with certain port is connected to other node or not.
Usually, running NETSTAT regularly, on the listener node, will do the job. But I want to monitor it, frequently (lets say, once a minute) by Solarwinds.
Not depending on a switch in the way...
I would get the TCPConState table
do a gettable on tcpConnState.<localIP>.<localport>.<remote-host-ip> and then check for an established connection
e.g. on the switch with IP address a.b.c.d there is an established connection to ssh (port 22) from the host w.x.y.z from a random high port (38643)
TCP-MIB::tcpConnState.a.b.c.d.22.w.x.y.z.38643 = INTEGER: established(5)
so, if I get the table TCP-MIB::tcpConnState.a.b.c.d.22.w.x.y.z
I would then look (possibly using some SQL) for a row that is established.
Note: Would not really recommend this other than for very specific connections, and it's not that easy (otherwise Solarwinds would not sell SAM for this purpose)
