[Serusers] Sip-Username and Sip-Password

[Ricardo Martinez]

Hello List.
	I have a question regarding to the User and Password configured in a
UA.  In which part of all the authentication process the password is used by
SER?  If i have Radius for authenticate users, this password is "encrypted"
in the nonce parameter?  If so, what prevent for some attacker to
"intercept" this packet and obtain this values?.

Thanks in advance

Ricardo Martinez