Help: ASA 5520 VPN with Radius authentication only using PAP!
I am creating a Remote Access VPN group with Radius authentication. Even though I put a check mark on the "Microsoft CHAPv2 Capable", the ASA uses PAP to request for authentication with our Radius server! Authentication is rejected because our Radius server requires Encrypted CHAP or CHAP v2.
Re: Help: ASA 5520 VPN with Radius authentication only using PAP
There are some aaa attributes on the tunnel you can try to adjust:
asa(config-ppp)# authentication ?
tunnel-group-ppp mode commands/options: chap Enable ppp authentication protocol CHAP eap-proxy Enable ppp authentication to be proxied to an EAP enabled RADIUS server ms-chap-v1 Enable ppp authentication protocol MS-CHAP version 1 ms-chap-v2 Enable ppp authentication protocol MS-CHAP version 2 pap Enable ppp authentication protocol PAP
If setting the above doesn't work, try to enable password-management which will require the ASA to send mschap-v2 plus you get the added benefit of the feature which is explained here:
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...