Hi,

I am struggling to get SIP (session initiation protocol) VoIP software (SIP Express Router + XTen/KPhone/Linphone) and hardware (Grandstream SIP IP Phone) to work with Shorewall. The best result I have achieved is when I can call (or someone call me), hear sound, but my talk is not transmitted for weird reason.

I have quite standard configuration - two-card Linux PC with shorewall (one static external IP + static local IPs 192.168.0.xxx), opened ports are 5060 tcp/udp, 5004 udp (for Grandstream), and 8000-8020 udp (for XTen, Linphone).

SER itself is hosted by the independent provider, and other people who have another router/firewall software do not have similar problem.

It looks like something is wrong with NAT or masquarading. May be someone will be kind to e-mail (or post on this mailing list) their Shorewall configs (masq, nat, rules, etc.)? My e-mail is andreil1@starlett.lv

Thanks in advance.

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