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Opening a port in NAT

 
 
fadilangga
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      12-01-2006, 06:35 AM
Hi, my house have a shared internet connection using Windows Server 2003
which acts as DNS, DHCP, and RRAS Server. Previously all the user able to
access IRC server or certain port of internet address. But after my friend
mess around with the server, all computers cant log on to any IRC Server or
open a certain port using web browser ( like http://www.blabla.com:2082 ) in
order to access a web control panel. Any solution to fix this? I suspect its
something to do with NAT Firewall..
 
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Robert L [MVP - Networking]
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      12-01-2006, 04:31 PM
Can you ping a publish IP? Posting the routing table here may help. Also check theses links,

Using Netsh to troubleshooting NAT issues
With Windows 2003, you can use Netsh Routing IP NAT Commands to troubleshoot NAT issues. For example, Netsh Routing IP NAT show interface displays the ...
www.chicagotech.net/tools/netsh1.htm

NAT and Firewall
Troubleshooting Windows NAT issues How to enable NAT How to enable NAT name resolution How to enable inbound connections How to configure 2000/2003 NAT ...
www.chicagotech.net/nat.htm


Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"fadilangga" <(E-Mail Removed)> wrote in message news:5F25769B-744D-4CBF-84A2-(E-Mail Removed)...
Hi, my house have a shared internet connection using Windows Server 2003
which acts as DNS, DHCP, and RRAS Server. Previously all the user able to
access IRC server or certain port of internet address. But after my friend
mess around with the server, all computers cant log on to any IRC Server or
open a certain port using web browser ( like http://www.blabla.com:2082 ) in
order to access a web control panel. Any solution to fix this? I suspect its
something to do with NAT Firewall..
 
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fadilangga
Guest
Posts: n/a

 
      12-05-2006, 01:01 AM
C:\Documents and Settings\Administrator>route print

IPv4 Route Table
================================================== =========================
Interface List
0x1 ........................... MS TCP Loopback interface
0x10002 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
0x10003 ...00 14 38 50 56 c0 ...... HP NC7761 Gigabit Server Adapter
0x20004 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
================================================== =========================
================================================== =========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 222.124.122.1 222.124.122.89 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.0.0 255.255.255.0 192.168.0.2 192.168.0.2 20
192.168.0.2 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.0.20 255.255.255.255 127.0.0.1 127.0.0.1 50
192.168.0.255 255.255.255.255 192.168.0.2 192.168.0.2 20
222.124.122.1 255.255.255.255 222.124.122.89 222.124.122.89 1
222.124.122.89 255.255.255.255 127.0.0.1 127.0.0.1 50
222.124.122.255 255.255.255.255 222.124.122.89 222.124.122.89 50
224.0.0.0 240.0.0.0 192.168.0.2 192.168.0.2 20
224.0.0.0 240.0.0.0 222.124.122.89 222.124.122.89 1
255.255.255.255 255.255.255.255 192.168.0.2 192.168.0.2 1
255.255.255.255 255.255.255.255 222.124.122.89 222.124.122.89 1
Default Gateway: 222.124.122.1
================================================== =========================
Persistent Routes:
None

That was my Server 2003 Routing table
Yes, I can ping a public IP, the problem only occur on connection other than
port 80. Thanks for any suggestion.

"Robert L [MVP - Networking]" wrote:

> Can you ping a publish IP? Posting the routing table here may help. Also check theses links,
>
> Using Netsh to troubleshooting NAT issues
> With Windows 2003, you can use Netsh Routing IP NAT Commands to troubleshoot NAT issues. For example, Netsh Routing IP NAT show interface displays the ...
> www.chicagotech.net/tools/netsh1.htm
>
> NAT and Firewall
> Troubleshooting Windows NAT issues How to enable NAT How to enable NAT name resolution How to enable inbound connections How to configure 2000/2003 NAT ...
> www.chicagotech.net/nat.htm
>
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
 
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Robert L [MVP - Networking]
Guest
Posts: n/a

 
      12-05-2006, 02:54 PM
Can you telnet other ports? If not, use netsh and netstat to check the port status.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"fadilangga" <(E-Mail Removed)> wrote in message news:AA7A601C-8C5D-4710-B56C-(E-Mail Removed)...
C:\Documents and Settings\Administrator>route print

IPv4 Route Table
================================================== =========================
Interface List
0x1 ........................... MS TCP Loopback interface
0x10002 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
0x10003 ...00 14 38 50 56 c0 ...... HP NC7761 Gigabit Server Adapter
0x20004 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
================================================== =========================
================================================== =========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 222.124.122.1 222.124.122.89 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.0.0 255.255.255.0 192.168.0.2 192.168.0.2 20
192.168.0.2 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.0.20 255.255.255.255 127.0.0.1 127.0.0.1 50
192.168.0.255 255.255.255.255 192.168.0.2 192.168.0.2 20
222.124.122.1 255.255.255.255 222.124.122.89 222.124.122.89 1
222.124.122.89 255.255.255.255 127.0.0.1 127.0.0.1 50
222.124.122.255 255.255.255.255 222.124.122.89 222.124.122.89 50
224.0.0.0 240.0.0.0 192.168.0.2 192.168.0.2 20
224.0.0.0 240.0.0.0 222.124.122.89 222.124.122.89 1
255.255.255.255 255.255.255.255 192.168.0.2 192.168.0.2 1
255.255.255.255 255.255.255.255 222.124.122.89 222.124.122.89 1
Default Gateway: 222.124.122.1
================================================== =========================
Persistent Routes:
None

That was my Server 2003 Routing table
Yes, I can ping a public IP, the problem only occur on connection other than
port 80. Thanks for any suggestion.

"Robert L [MVP - Networking]" wrote:

> Can you ping a publish IP? Posting the routing table here may help. Also check theses links,
>
> Using Netsh to troubleshooting NAT issues
> With Windows 2003, you can use Netsh Routing IP NAT Commands to troubleshoot NAT issues. For example, Netsh Routing IP NAT show interface displays the ...
> www.chicagotech.net/tools/netsh1.htm
>
> NAT and Firewall
> Troubleshooting Windows NAT issues How to enable NAT How to enable NAT name resolution How to enable inbound connections How to configure 2000/2003 NAT ...
> www.chicagotech.net/nat.htm
>
>
> Bob Lin, MS-MVP, MCSE & CNE
> Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
> How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
 
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