Windows Firewall fails to start on Windows Server 2003

[eggy]

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

[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.
I recommend Brinkster for web hosting!

"eggy" <***@discussions.microsoft.com> wrote in message news:1F9194F9-377F-421A-8E24-***@microsoft.com...
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

[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.

Post by 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).
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.
I recommend Brinkster for web hosting!
Hello,
i have a Windows Server 2003 SP1 - Standard Edition.
I want to use the Windows Firewall but every time i start it (Control
"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