Question

Find RRAS tutorial links=500 points

Asked by: Trihimbulus

I am looking for some links that will walk me through setting up a IPSec VPN between two RRAS (Routing and Remote Access Servers) - NEEDS to be for Windows Server 2003. I need better than Microsoft Whitepapers (but feel free to post.) Want a step by step configuration guide!

Have fun

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Asked On
2005-06-23 at 17:52:57ID21469209
Tags

rras

,

tutorial

,

ipsec

,

vpn

Topics

Miscellaneous Networking

,

Networking Hardware Firewalls

,

IPSec Security Protocol

Participating Experts
2
Points
500
Comments
6

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Answers

 

by: kbbcnetPosted on 2005-06-23 at 20:32:58ID: 14290963

Step by step - Network, Internet, Remote Access, VPN Tips & Troubleshooting:
http://www.chicagotech.net/articles/msvpn1.htm

Step-by-Step Guide & Screens for Setting Up VPN:
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/networking/rmotevpn.mspx

How To Configure IPSec Tunneling in Windows Server 2003:
http://support.microsoft.com/kb/816514

Virtual Private Networking with Windows Server 2003: Deploying Site-to-Site VPNs:
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/networking/vpndpls2.mspx
----------------------------

You may also want to consider &/or take a look at this.

Creating IPSec Tunnel Mode Site to Site VPNs with ISA Server 2004 Firewalls:
http://www.isaserver.org/pages/article_p.asp?id=1288
http://www.isaserver.org/tutorials/2004ipsectunnelmode.html

 

by: sciwriterPosted on 2005-06-23 at 20:36:10ID: 14290976

If you are serious about secure VPN via IPSec, you should be doing what all other major corporations are doing, and using hardware VPN-endpoint routers to accomplish the task.  They are more or less 100% foolproof, they were designed to give flawless VPN service, they stay up for MONTHS at a time without a reboot, they (e.g. linksys BEFSVP-41, their VPN endpoint router) only cost about $75 each.

A windows server is a FILE SHARING SYSTEM -- you are lucky if it can robustly share applications -- but from experience, MS is miles behind router manufacturers when it comes to VPN.  You can tout the MS mantra all you want, and I'm sure you will think I am being arrogant, but EXPERIENCE PROVES that MS OSs are file sharing systems at best.  If you want to hassle with their idea of VPN, go right ahead and wante weeks trying to get it stable.  On the other hand, if you want a foolproof solution that will work flawlessly with almost NO setup hassles, go out an buy two Linkssy (same as Ciscso) VPN endpoint routers, in 30 minutes, you are DONE, and then you can get on with reality and life as we know it.

 

by: kbbcnetPosted on 2005-06-23 at 21:03:19ID: 14291071

Of course you know for real time sciwriter is right --
Hardware applicances make for hardened secruity --
And generally perferable over software implementations of the same.

So i assume this is for some personal project or the like.

Tutorials:
ISA Server VPN Tutorials:
http://www.techtutorials.info/isavpn.html

Windows 2003 Networking VPN Tutorials:
http://www.techtutorials.info/2003networ.html

Others:
http://isaserver.org/tutorials/general_guides_and_articles/

 

by: TrihimbulusPosted on 2005-06-24 at 06:28:53ID: 14293340

Well I do agree with the idea of a dedicated VPN Gateway on both sides- I was using Smoothwall Express 2.0 and NAT-Traversal isn't working. I need to join one office to my domain via the VPN Tunnel- so then I heard that RRAS might solve my problem. Setting up a serverin my LAN and and server at theother office to create the tunnel, and then joiningthe remote server to my domain as a third domain controller. Then all the workstations at the remote office can authenticate to the RRAS/DC at that office. Make sense? I am so confused haha

 

by: TrihimbulusPosted on 2005-06-24 at 06:39:02ID: 14293446

Also, I wanted to add, that am I going about this the right way (wanting to use RRAS?) Both of the @003 Servers are just servers on the lan(s), not gateways. Our hardware firewall is our gateway. Please advise.

 

by: kbbcnetPosted on 2005-06-24 at 07:30:38ID: 14294040

ok - you may want to read sciwriter once more closely - [it still looks to me like that would be asimple cost effective solution] :)

Are you sure you opened the necessary ports in your firewall & that you ISP is not blocking them as well?
----------------------
Have you patched your the NAT-Traversal?
http://community.smoothwall.org/forum/viewtopic.php?t=6074

Nat-Traversal:
http://community.smoothwall.org/forum/viewtopic.php?t=6519

Some VPN Ports/Protocols:
PPTP: TCP port 1723/Protocol 47

IPSec: UDP port 500 for IKE (Internet Key Exchange) phase.
The second phase can use one of the following:
- AH (Authentication Header):Protocol 51
- ESP (Encapsulated Security Payload): Protocol 50

NAT-Traversal standard:
 ESP is encapsulated in UDP port 4500
 L2TP uses IKE + ESP plus - UDP port 0 and UDP port 1701
----------------------------

Using a Linux L2TP/IPsec VPN server:
http://www.jacco2.dds.nl/networking/freeswan-l2tp.html#NAT

NAT-Traversal is considered to be experimental and unsafe if used with L2TP/IPsec (see section 5 "Security Considerations" of the "IPsec within UDP" IETF draft mentioned above).

NAT changes packets on the fly. The problem is that this kind of 'tampering' is exactly what a VPN tries to prevent! Fortunately, some NAT devices support 'IPsec passthrough' which allows IPsec to be used through the device. Draytek is one such device with IPsec passthrough support. However, it seems that IPsec passthrough only works for one user at a time, not multiple concurrent users behind the same NAT device. I have not tested L2TP/IPsec through a NAT device with IPsec passthrough myself, but I received a report by Tim Behrsin about 'UDP: bad checksum' problems. Some NAT devices are broken in the sense that you cannot disable IPsec passthrough (the SMC 2804 comes to mind?). Plain IPsec on the other hand has been reported to work with these devices (i.e. Tunnel Mode, not L2TP/IPsec in Transport Mode).

20120131-EE-VQP-002

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