On Sat, 19 Aug 2000, you wrote:
> To know which ports you have open:
>
> # netstat -tln # TCP
> # netstat -uln # UDP
>
> To know which particular program listens on a port:
>
> # lsof -i :23 # who listens on telnet port?
>
Ahh...very interesting. Thanks. I've been running linux for
over a year now, and this is the first time I"ve seen the
detailed instructions to see what's running and find out
what services are actually listening on the "open" ports.
:-) I guess I'm pretty secure.... I have a whopping 4 ports
"open." One is identd (which I might as well turn off
'cause it doesn't appear to be working! *sigh*) one is
Junkbuster, one is X and the last is SSH! :-)
I just wish my ISDN router would allow ident requests
through. I've got port 113 configured to pass through to my
linux box, but last time I tried using IRC, I never saw any
ident requests in my logs, even though they were showing up
as failed in my IRC window! :-( Maybe my ISP is trapping
that port??? I don't *think* so (I work for my ISP <G>) but
I"ll have to double-check I guess!
John
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