How to remotely verify if a router's ports are open


            
    Use the Telnet command to verify that a router's ports are open

 
1
Click Start > Run.
2
In the run dialog box, type the following and press Enter:
 
cmd
3
 At the command prompt, type the following command and press Enter:
 
telnet
4
Type the following and press Enter.
 
open xxx.xxx.xxx.xxx 5631
 where X's represent the IP address of the router.

5
Depending on what you see, choose one of the following:
 
Please press Enter
The port is open and working correctly.
 "Could not open connection" or a blank screen with a blinking cursor

One of the following is true:

  • The ports are closed.
  • You are using the wrong router.
  • The host is not waiting for a connection.
  • You are connecting through a firewall that is blocking the pcAnywhere ports.
 Connection to host lost
The ports are open but the host is refusing the connection for some other reason. Check for entries in the TCP/IP options that limit connections to specific addresses. Follow the steps below to check the  TCP/IP options:

1
Start pcAnywhere.
2
Click Edit > Preferences Or Tools > Options.
3
Click the Host Communications tab.
4
Ensure that there are no addresses entered in the "Limit connections to the following names or IP addresses" field. If there are, either delete them or add the address or name of the remote computer that you are trying to connect to.


References:
Related documents:
Cannot connect to a pcAnywhere host through a router
Windows XP Internet Connection Firewall prevents pcAnywhere TCP/IP connection


Document ID: 2001091906242012
Last Modified: 03/19/2008
Date Created: 09/19/2001
Operating System(s): Windows 95, Windows 98, Windows 98SE, Windows NT 4.0, Windows 2000, Windows Me, Windows XP Home, Windows XP Professional
Product(s): pcAnywhere 10.0, pcAnywhere 10.5, pcAnywhere 11.0, pcAnywhere 11.5, pcAnywhere 9.0

©1995 - 2009 Symantec Corporation