Snom 4S NAT Filter Admin Manual page 54

tion tool.
•
Please tell us the login address (host and port), user name and
password. We need administrative rights on that host.
• Please tell us for what domains you plan to use the server. Please
also tell us where you want to process the requests (which outbound
proxy to use for NAT Filter).
• Please don't run too many other services on that host that can
degrade the performance of the server. We recommend using the
server only for NAT Filter.
• Please tell us what ports you want to use for NAT Filter (SIP, http,
https). We recommend not using the standards ports, as they some-
times trigger inappropriate actions on immature equipment.
•
Please set your DNS SRV records for SIP up so that they point to the
NAT Filter SIP UDP port. Please don't use other transport layers than
UDP. Do not set up DNS SRV records for TCP or TLS.
References
[1] Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, A., Peterson,
J., Sparks, R., Handley, M. and E. Schooler, „SIP: Session Initiation
Protocol", IETF, RFC 3261, June 2002, http://ietf.org.
[2] Rosenberg, J., Weinberger, J., Huitema, C., Mahy, R., „STUN - Sim-
ple Traversal of User Datagram Protocol (UDP) Through Network
Address Translators (NATs)", IETF, RFC3489, March 2003, http:
//ietf.org.
[3] UPnP™ Forum, http://www.upnp.org/
[4] Rosenberg, J.: "Interactive Connectivity Establishment (ICE): A
Methodology for Network Address Translator (NAT) Traversal for
Multimedia Session Establishment Protocols" (Internet draft), http:
//ietf.org/internet-drafts/draft-ietf-mmusic-ice-02.txt
[5] Rosenberg, J., Mahy, R., Huitema, C.: "Traversal Using Relay NAT
(TURN)" (Internet draft), http://www.ietf.org/internet-drafts/draft-
rosenberg-midcom-turn-05.txt
54 • Checklist for Installation
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