Port 7777 in use, but cannot identify what is using it...
734084Oct 20 2010 — edited Oct 20 2010Hi, all~
I'm having a problem with a Oracle Enterprise Linux 5.2 template (that has since been upgraded to 5.5).
When I do a "netstat -an | grep 7777", I get the following output (where the x's are the IP of this machine):
tcp 0 0 x.x.x.x:7777 0.0.0.0:* LISTEN
So, there's -something- listening on 7777.
My first guess is that there's an Oracle HTTP server install somewhere on the machine, as that's it's usual port. But doing a "ps -elF | grep httpd" comes up empty. But the strange thing is that if I open a browser to http://x.x.x.x:7777, I don't actually get 404'd - I just get a blank page. So something responded to that http request, just didn't provide any output.
Ok, well, back to netstat... I did a "netstat -npl" in an effort to get a PID associated with the process that's listening to that port, but for that entry, no PID is provided:
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:3872 0.0.0.0:* LISTEN 2473/emagent
tcp 0 0 x.x.x.x:7777 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.1:65291 0.0.0.0:* LISTEN 3868/nmz
tcp 0 0 0.0.0.0:686 0.0.0.0:* LISTEN -
...
Poking around online, a lot of people suggested trying out the lsof command... so I did, but "lsof | grep 7777" also comes up empty.
So... any suggestions of things to try to help sort out what is actually running on 7777?
Thanks in advance,
- Nathan