http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_sw/v_63/config/basclnt.htm#wp1019576
When you specify MPPE, use the MS-CHAP PPP authentication protocol. If you are using an external AAA server, the protocol should be RADIUS and the external RADIUS server should be able to return the Microsoft MSCHAP_MPPE_KEY attribute to the firewall in the RADIUS Authentication Accept packet. See RFC 2548, "Microsoft Vendor Specific RADIUS Attributes," for more information on the MSCHAP_MPPE_KEY attribute.
Cisco Secure ACS 2.5/2.6 and higher releases support the MS-CHAP/MPPE encryption.
drbk563 <drbk563
gmail.com> escribió: I have PPTP VPN server
running on a PIX firewall. The PIX firewall
authenticates the users against TACACS. The problem is when the client
tries to make a connection with the VPN server. The client gives me an
error and states "the remote computer does not support the required
data encryption type." What do I need to add to the PIX config to add
encryption capabilities?
Thank you in advance
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