Avatar of SAM2009
SAM2009
Flag for Canada asked on

How to veify if a specific ports are opened in Windows 2008 R2?

How to veify if specific ports are opened in Windows 2008 R2?

For example, I need to know if UDP ports 1812,1813,1645,1646 are opened. What can I do for that?
Windows Server 2008Software FirewallsWindows Networking

Avatar of undefined
Last Comment
SAM2009

8/22/2022 - Mon
SOLUTION
Force_Reaction

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
SOLUTION
Darr247

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
ASKER CERTIFIED SOLUTION
Log in to continue reading
Log In
Sign up - Free for 7 days
Get an unlimited membership to EE for less than $4 a week.
Unlimited question asking, solutions, articles and more.
*** Hopeleonie ***

SOLUTION
Log in to continue reading
Log In
Sign up - Free for 7 days
Get an unlimited membership to EE for less than $4 a week.
Unlimited question asking, solutions, articles and more.
SAM2009

ASKER
When I use netsat in the server I got this. Does it mean port 1812 is opened?


C:\Users\a-ct006071>netstat -ano | find "1812"
  TCP    192.168.1.100:49158    172.28.131.181:1812    ESTABLISHED     580
  UDP    0.0.0.0:1812           *:*                                    1000
  UDP    [::ffff:192.168.1.100]:1812  *:*                                    1000



What "::ffff", "*.*" and "1000" mean?

And yes I need to test from Inside the server and outside.

- From Inside to make sure the prob is not from Windows firewall.
- From outside to make sure the prob is not from Cisco firewall or network.

Thanks
ahoffmann

yes port 1812 is open (or was open when the connection was established)

:ffff is a IPv6 address
Your help has saved me hundreds of hours of internet surfing.
fblack61
SAM2009

ASKER
Thanks and for  "*.*" and "1000" what does it mean?
ahoffmann

*:*  most likely any port from any IP
1000  PID (didn't you read the header line printed by netstat;-)
SAM2009

ASKER
Ya but what means PID?
Get an unlimited membership to EE for less than $4 a week.
Unlimited question asking, solutions, articles and more.
Darr247

PID = Process ID.  
Open up the Task Manager (taskmgr.exe) and view the Processes tab to see which process that is.
You might need to choose to show that column if it's not currently visible.Task Manager - Show PID Column (click for larger)
It appears both of those free programs I linked to in http:#a39013234 actually get their info from netstat, then put it into a pretty GUI matrix for you, by the way.
SAM2009

ASKER
Thanks a lot everybody for your help!