Could somebody please advise if the Cisco VPN Client is more secure than the Built-in microsoft VPN on windows XP? If the Cisco client is more secure than why? Does the Microsoft one not use IPSEC and just PPTP?
Please advise - Very urgent!
I'm sure a Cisco VPN Concentrator with Cisco Client is more secure but I not sure exactly why.
One have to take a deeper look at both, all your questions will be answered after you look at these links.
Ipsec is an opened standard, Cisco VPN client or any VPN client that is Ipsec based must meet these standards. You will learn more by reading these few links bellow, by the end of the reading you will be have a better
perspective as to which client you would be more gear towards using as a network professional.
Personally I have been moving away from PPTP gradually and replacing it with Cisco VPN clients. Don't get me wrong, PPTP is still widely used out there but it is more vulnerable.
With Ipsec based VPN you have a more wide selection of authentication algorythms,
encryptions granularity as a way to implement an extreamely secure VPN architecture for RA.
Introduction to IPsec
introduction to PPTP/L2TP
Analysis of MS PPTP implemetation and vulnerabilities
Other workarounds for using MS client using L2TP over Ipsec
Also, you may do a google search on " hacking PPTP " or " Ipsec" to get a more insight of vulnerabilities.