Cisco 836 and VPN

syn_NOSPAM_uw schrieb:

Yes.

Depends on what you configure.

Standard IPsec is available with Windows 2000 or Windows XP or many other O/Ses.

With the Cisco VPN Client you can push allmost all configuration from the VPN concentrator to the client.

Without a PLUS IOS the encryption is only performed through software in the router's CPU. Throughput will be limited to less than 120kB/s using AES or less than 80kB/s using 3DES.

You can also configure PPTP as a convienient alternativ if security is not a real concern. All you need comes with Windows.

First, many thanks for your quick answer!

And is this Cisco VPN client free to download ?

I think I will go for the PPTP variant, unfortunately I didn't find any references of PPTP in the Cisco 836 documentation PDF:

Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide

which I downloaded :( Do you maybe have any pointers how I can configure a PPTP server on my Cisco 836 router ? Or maybe even a config example ?

Thanks in advance Regards

syn_NOSPAM_uw schrieb:

Consider asking Google with "cisco ios pptp".

How to configure Cisco Router for MS VPN clients (PPTP with MPPE):

B.R. Igor

Hi Igor, many thanks for your answer and the documentation it helped pretty much! The only thing I am not sure about is how to configure now PPTP login user accounts. I used the following account to create a user:

username vpnuser password 0 testpw

Unfortunately, authentication doesn't work as you can see here in the debug output:

... Dec 27 11:16:46: ppp14 LCP: I CONFACK [ACKsent] id 2 len 15 Dec 27 11:16:46: ppp14 LCP: AuthProto MS-CHAP-V2 (0x0305C22381) Dec 27 11:16:46: ppp14 LCP: MagicNumber 0x176CAE19 (0x0506176CAE19) Dec 27 11:16:46: ppp14 LCP: State is Open Dec 27 11:16:46: ppp14 PPP: Phase is AUTHENTICATING, by this end Dec 27 11:16:46: ppp14 MS-CHAP-V2: O CHALLENGE id 1 len 26 from "rtr" Dec 27 11:16:47: ppp14 MS-CHAP-V2: I RESPONSE id 1 len 59 from "vpnuser" Dec 27 11:16:47: ppp14 PPP: Phase is FORWARDING, Attempting Forward Dec 27 11:16:47: ppp14 PPP: Phase is AUTHENTICATING, Unauthenticated User Dec 27 11:16:47: ppp14 PPP: Sent MSCHAP_V2 LOGIN Request Dec 27 11:16:47: ppp14 PPP: Received LOGIN Response FAIL Dec 27 11:16:47: ppp14 MS-CHAP-V2: O FAILURE id 1 len 13 msg is "E=691 R=0" Dec 27 11:16:47: ppp14 PPP: Sending Acct Event[Down] id[16] Dec 27 11:16:47: ppp14 PPP: Phase is TERMINATING Dec 27 11:16:47: ppp14 LCP: O TERMREQ [Open] id 3 len 4 Dec 27 11:16:47: ppp14 LCP: State is Closed Dec 27 11:16:47: ppp14 PPP: Phase is DOWN Dec 27 11:16:47: ppp14 PPP: Phase is TERMINATING

Do you have any ideas what's wrong here ?

Thanks Regards

Can you post your pptp config? This+debug output you just posted can help me to troubleshoot this issue...

B.R. Igor

Thanks Igor, I have found the problem: I had to activate AAA.

Regards