Windows Firewall fails to start on Windows Server 2003


G

Guest

Hello,
i have a Windows Server 2003 SP1 - Standard Edition.
I want to use the Windows Firewall but every time i start it (Control
Panel/Service) I get this message:
"Windows Firewall cannot start because another program or service is running
that might use the network address translation component (Ipnat.sys)"
I'm using RRAS for VPN calls.
Thank you all
 
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R

Robert L [MS-MVP]

quoted from Troubleshooting Windows Server2003 SP1 Issues

Can't enable windows Firewall on a RRAS server - Windows firewall cannot run because another program or service is running that might use the network address translation component (Ipnat.sys)
Situation: one of our clients could not get the windows Firewall to work. Whenever they tried to start the Windows Firewall, they received the following message: "Windows firewall cannot run because another program or service is running that might use the network address translation component (Ipnat.sys).

What they tried:

They event tried to stop the RRAS but got the same result. They finally make it work by disabling the RRAS.

Recommendation: It is not recommended to use Windows Firewall on a RRAS server. If you use the server as a router, you should enable NAT; if you use the server as VPN, you should have another firewall.

Related Topics

Don't run Windows Firewall on RRAS

For more and other information, go to http://howtonetworking.com.

Don't send e-mail or reply to me except you need consulting services. Posting on MS newsgroup will benefit all readers and you may get more help.

Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, Remote Access on http://www.HowToNetworking.com
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
This posting is provided "AS IS" with no warranties.
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Hello,
i have a Windows Server 2003 SP1 - Standard Edition.
I want to use the Windows Firewall but every time i start it (Control
Panel/Service) I get this message:
"Windows Firewall cannot start because another program or service is running
that might use the network address translation component (Ipnat.sys)"
I'm using RRAS for VPN calls.
Thank you all
 
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C

Com2

But what if your not using RRAS? The RRAS service will be disabled and not
running on SVR 2003 STD. Sometimes a reboot will generally fix the issue but
sometimes it will not. BTW I'm part of a management team that supports quite
a few servers and we see this issue offten.
 

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