Nat types implemented by IPTABLES - STUN issue

[Leandro Melo de Sales]

Hi folks,

 I'm using an implementation for STUN (RFC 3489:
http://www.faqs.org/rfcs/rfc3489.html) written in JAVA
(http://stun4j.dev.java.net/).
 In this RFC, they describes some nats variations (see STUN RFC
chapter 5) some of them supported by STUN specification, like: Full
Cone, Restricted Cone, Port Restricted Cone and Symmetric.
 So, I have a simple question for iptables developers: what types of
nat iptables supports?

Thank you in advanced...

Leandro.