With the Cisco’s IOS Authentication Proxy feature, users can initiate network access via which three protocols? (Choose three)

A.
HTTP/HTTPS

B.
L2TP

C.
TELNET

D.
IPSec

E.
SSH

F.
FTP

Explanation:
2651-1(config)#ip auth-proxy name test ? ftp FTP Protocol http HTTP Protocol telnet Telnet Protocol
debug ip auth-proxy
To display the authentication proxy configuration information on the router, use the show ip auth- proxy configuration command in privileged EXEC mode.
debug ip auth-proxy {ftp | function-trace | http | object-creation | object-deletion | tcp | telnet | timer} Syntax Description