How do I find out which port an app is using?

[JoeSpareBedroom]

My SonicWall VPN software is being blocked by my firewall (ZoneAlarm), and
as a first step in solving the problem, I need to know which port(s) the VPN
uses. Looking through XP Pro's accessories & system tools, I don't see
anything available for this type of thing. Is there a way to do this? I'm
running with a router, so I can shut down ZA long enough to get the VPN to
work so I can diagnose what it needs.

 

[wilscott1st]

My SonicWall VPN software is being blocked by my firewall (ZoneAlarm), and
as a first step in solving the problem, I need to know which port(s) the VPN
uses. Looking through XP Pro's accessories & system tools, I don't see
anything available for this type of thing. Is there a way to do this? I'm
running with a router, so I can shut down ZA long enough to get the VPN to
work so I can diagnose what it needs.

You can open a command prompt and type:
netstat -a -n -b -v

this will show you the ports that are opened, their status, the
components that are using the port, and the executable file associated
with the components.

 

[JoeSpareBedroom]

You can open a command prompt and type:
netstat -a -n -b -v

this will show you the ports that are opened, their status, the
components that are using the port, and the executable file associated
with the components.

So, does this mean the VPN software is using port 396? I inserted the
double tildes in case the columns get crammed together when I post this
message.


UDP 0.0.0.0:500 ~~ *:* ~~
396
[SWGVpnClient.exe]

 

[wilscott1st]

You can open a command prompt and type:
netstat -a -n -b -v

this will show you the ports that are opened, their status, the
components that are using the port, and the executable file associated
with the components.

So, does this mean the VPN software is using port 396? I inserted the
double tildes in case the columns get crammed together when I post this
message.

UDP 0.0.0.0:500 ~~ *:* ~~
396
[SWGVpnClient.exe]- Hide quoted text -

- Show quoted text -

port 500

 

[Bruce Chambers]

My SonicWall VPN software is being blocked by my firewall (ZoneAlarm), and
as a first step in solving the problem, I need to know which port(s) the VPN
uses. Looking through XP Pro's accessories & system tools, I don't see
anything available for this type of thing. Is there a way to do this? I'm
running with a router, so I can shut down ZA long enough to get the VPN to
work so I can diagnose what it needs.

Refer to the documentation that accomapanied the VPN application.


--

Bruce Chambers

Help us help you:


They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety. ~Benjamin Franklin

Many people would rather die than think; in fact, most do. ~Bertrand Russell

The philosopher has never killed any priests, whereas the priest has
killed a great many philosophers.
~ Denis Diderot

 

[JoeSpareBedroom]

Refer to the documentation that accomapanied the VPN application.

Bruce Chambers

If there was anything in print, it's at my company's home office 400 miles
away. The help system on my machine offers no insights at all. Yes, it's
legally licensed software. Thanks for asking.