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question... PPTP vs L2TP

Megadeth4168

Ok, I read 2 sources that say different things about the difference between these protocols.

I guess, as far as the network+ is concerned what are the key differences I need to know about these 2?

Thanks

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Comments

gigione

As far as I know L2TP works with IP networks only

Opi

L2TP or layer 2 tunneling potocol support NON-TCP/IP protocols in VPN, Its a mixture of MS PPTP and Cisco's Layer 2 forwarding(L2F) technology. Thus L2TP is only for non-TCP/IP networks.

Correct me if i'm wrong

Ally77

Basically PPTP and L2TP/IPSec are the two methods of provding authentication and encryption over VPN connection. They both provide the same authentication methods such as CHAP, MS CHAP v 1+2, EAP etc but L2TP/IPSec offers the most secure encryption:

PPTP uses MPPE for encryption - 40, 56 or 128 bit
L2TP/IPSe - DES (56 bit) or 3DES (168 bit)

A few points to remember:
To use encryption on a PPTP connection you must use either MS-CHAP, MS-CHAP 2 or EAP-TLS for authentication.

If you must use a password based authentication protocol then use MS-CHAP v2 and enforce strong passwords through group policy

Megadeth4168

Opi wrote:

L2TP or layer 2 tunneling potocol support NON-TCP/IP protocols in VPN, Its a mixture of MS PPTP and Cisco's Layer 2 forwarding(L2F) technology. Thus L2TP is only for non-TCP/IP networks.

Correct me if i'm wrong

This is the part that the 2 sources were different on...

One source said that L2TP was TCP/IP only and PPTP could use other protocols and the other source basically had this the other way around. I think your post must be correct.

Ally77: I found your reply to be very insightful, thank you very much.

Ally77

Your very welcome!!The microsoft site has some good articles on the two that you may find helpful to print out!! Its worth having a browse about. As with all information on the site i.e. www.technet.com it can be quite hard to find what your looking for but it is there somewhere!! Good luck