How to check for open ports in ISA servers?
Hi Experts,
I've been given a task to confirm few ports are open or not. I'm planning to use netstat command and tcpview tool. We are using ISA 2004. Could you please guide me if there is any other way to confirm them? And in tcpview I can see few status like
1.Listening 2.Established 3.Time-Wait.
I'm little confused as this is the first time I'm confused. Please guide.
Best Regards,
Anupam
I've been given a task to confirm few ports are open or not. I'm planning to use netstat command and tcpview tool. We are using ISA 2004. Could you please guide me if there is any other way to confirm them? And in tcpview I can see few status like
1.Listening 2.Established 3.Time-Wait.
I'm little confused as this is the first time I'm confused. Please guide.
Best Regards,
Anupam
you could also use MS version
PortQry
http://support.microsoft.com/default.aspx?scid=kb;en-us;310099
ex:
portqry -n 10.10.23.24 -p tcp -r 1:2048 -l 10.10.23.24.txt
Cheers,
Hades666
PortQry
http://support.microsoft.com/default.aspx?scid=kb;en-us;310099
ex:
portqry -n 10.10.23.24 -p tcp -r 1:2048 -l 10.10.23.24.txt
Cheers,
Hades666
ASKER
Hey, thanks a lot! Yeah, u r right. I can't scan for the ports on ISA server, but I can try PortQry. Between, fi a port is open, will it be in Listening state or some other state?
Best Regards,
Anupam
Best Regards,
Anupam
What? Cause you can.
Drop out to a cmd prompt and type in netstat -an - the output are the open ports on the ISA Server. What more did you want?
Keith
Drop out to a cmd prompt and type in netstat -an - the output are the open ports on the ISA Server. What more did you want?
Keith
SOLUTION
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Keith is correct to and you can filter that like such. I was mis-reading the question to test a firewall on incoming ports.
netstat -an | find /i "LISTENING"
But this will only list listening ports with services attached.
cheers,
Hades666
netstat -an | find /i "LISTENING"
But this will only list listening ports with services attached.
cheers,
Hades666
ASKER
Hi Keith,
I've run the command < netstat -a | findstr /i listening > on ISA server. Does the staus Listening for a particular port means that it is open?
When I execute netstat -an, it shows a huge list. Some ports are showing as ESTABLISHED, some as LISTENING, some as CLOSE_WAIT.
Which status I should consider as "Opening"
Many thanks,
Anupam
I've run the command < netstat -a | findstr /i listening > on ISA server. Does the staus Listening for a particular port means that it is open?
When I execute netstat -an, it shows a huge list. Some ports are showing as ESTABLISHED, some as LISTENING, some as CLOSE_WAIT.
Which status I should consider as "Opening"
Many thanks,
Anupam
ASKER CERTIFIED SOLUTION
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Advanced Port Scanner 1.3
http://www.radmin.com/products/utilities/portscanner.php
This will scan a network range or single PC for open ports and closed ports.
Cheers,
Hades666