Question

How to a new port to be listening and be access from computer clients

Asked by: Realhawk

Hi..

I already installed a Windows 2003 R2 STD Server 32 bits with all the service packs that Windows request.

I have a request from Human Resources to open a port 33100 TCP.

I turn off the Firewall of my Network Interface Card and I did this small test

I run CMD
and from C: Prompt a type this command

c:\telnet 192.168.9.148 33100

and replies me a message..

"Connecting To 192.168.9.148...Could not open connection to the host, on port 33100: Connect failed"

So I went to C:\windows\system32\drivers\etc and I edit services file and I type this line

tress         33100/tcp        #HR
tress         33100/udp       #HR

from my Pix firewall I type this line

access-list acl_inside permit tcp  192.168.0.0 255.255.0.0 any eq 33100  (Just for make some test to open all the networks, but not work)
access-list acl_inside permit udp 192.168.0.0 255.255.0.0 any eq 33100  

and from my client computer I went to that part and added too

1. C:\windows\system32\drivers\etc

2. Edit services file and I type this line

tress         33100/tcp        #HR
tress         33100/udp       #HR

and not work..

So I just wonder how can I make this work to be listening on the network..

any questions or solutions?

Regards

RTL

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Asked On
2007-01-22 at 13:04:17ID22132141
Tags

2003

,

open

,

port

,

how

Topic

Windows 2003 Server

Participating Experts
2
Points
500
Comments
8

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Answers

 

by: mikeleebrlaPosted on 2007-01-22 at 13:34:24ID: 18369639

well you have to have something setup to actually do something on that port.

for example, enabling telnet will 'open' port 23, enabling a web server will "open" up port 80. Then after the port is actually 'listening then you would actually open the port on your firewall/router (assuming you wanted it to pass through it).

did you do anything to actually make your computer 'listen' on port 33100?
why is the HR department asking for it?

 

by: Netman66Posted on 2007-01-22 at 13:49:14ID: 18369793

If the app is indeed there and "listening" then reboot the server to bring the Services file in.

 

by: mikeleebrlaPosted on 2007-01-22 at 13:53:28ID: 18369842

also run 'netstat -an' from command prompt to see if 33100 is listening on the server.  If you don't see it listed then nothing has 'enabled' that port. You need to get it listed there before you mess with any access lists on network equipment.

 

by: RealhawkPosted on 2007-01-23 at 14:39:28ID: 18380320

There is a HR APP that needs that port..

I already rebooted the server and still the same. no 33100 port listening.

I ran netstat -an before and there is not lines about 33100 listening on the server..

who can I setup that part..

any ideas?

 

by: Netman66Posted on 2007-01-23 at 15:38:08ID: 18380929

Is the HR app installed and running now?  If so, then it should simply work.

Make sure that you don't have the SP1 firewall turned on and also that you are not using Filtering on the NICs.

 

by: RealhawkPosted on 2007-01-23 at 20:20:55ID: 18382944

I already have turn off the firewall and still the same...

I don´t have any filtering on the NICs activated...

another idea?

 

by: Netman66Posted on 2007-01-23 at 20:32:51ID: 18382993

Ok, we need to step back for a minute.

How are you determining that the application is not listening?

Have you attempted to use the app from a client PC to see if it responds?

 

by: RealhawkPosted on 2007-01-24 at 19:33:50ID: 18392902

when I want to check if the port is open, I use always the command telnet.

for example, to see if the port 80 is open

I type:

telnet 192.168.9.148 80

and the server answer.

that´s how I determining that the server port is open.

So I want to try with the port 33100 TCP, but not answer.

I attempted to use the app client with the server to establish with 33100 port and not works..

any ideas..?

20120131-EE-VQP-002

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