Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Cisco 851 to Microsoft ISA 2004


Is it posible and recomended to establish VPN conection between MS ISA 2004 and Cisco 851 (Cisco must start connection)?

P.S. How to explain that it's fool to my boss?


Re: Cisco 851 to Microsoft ISA 2004

Yes its possible

Check this link (its about win2000 but its same for ISA 2004)

Its difficull to troubleshoot IPsec VPN between devices from different vendors

Windows VPNs are not so reliable (as Windows are not so reliable)

Also PC platform is not excellent network device...its better to use special network devices ... Cisco Routers has no hard drives (all is stored on flash) - so probability of crash is much more lower...

Cisco router has also much more better encrypting performace for IPsec VPNs

Also you can easily take configuration from Cisco router and upload to different box...

So its plus for Cisco routers..

What is reason for deploying Windows VPN???

I see only one case when use Windows VPN - its place syslog server on Win server and create Ipsec VPN for log messages - its good from security reasons


Hope that helps rate if it does

New Member

Re: Cisco 851 to Microsoft ISA 2004

Oh thanks!

In current example we see cisco 3640. Will be the same on Cisco 850?


Re: Cisco 851 to Microsoft ISA 2004

Yes its same when we speaking about IPsec support in this case


Please rate helpful posts to help identify useful threads