For 1., i think ipsec check the integrity of each packet, who is it coming from, who is it going to etc. And it's doing a kind of checksum of each packet, on the data if contains.
Also you have two modes in ipsec.
partial answer anyway...You can read freeswan documentation ;p there is more explanation about it
There's a list of third party clients for windows but it seems that none of them are free except the one builded in win2k
-----Original Message-----
From: Patrick Hsieh [mailto:pahud@ezplay.tv]
Sent: 19 November 2002 01:23
To: Jamin W. Collins
Cc: debian-user@lists.debian.org
Subject: Re: pptp vpn
I have two question about pptp vpn:
1. Is pptp+mppe any insecure? Why? Since the pptpd server can force the
connection to use mppe encryption with the client. How come pptp+mppe is
insecure? Is it because the encryption algorithm or lack of the public key
infrastructure?
2. I can easily install freeswan on Linux, but where can I find the Windows
client that can talk with freeswan server?
--
Patrick Hsieh<pahud@ezplay.tv>
GnuPG Pubilc Key at http://www.ezplay.tv/~pahud/pahudatezplay.pubkey
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