I use following settings in shorewall: (for connections established to the firewall) ACCEPT net fw udp 4569,5060,10000:20000 (all outgoing connections are permitted) Someone, please, comment on that to attest! I appreciate... A.Fittering -- Handyrechnung zu hoch? Tipp: SMS und MMS mit GMX Seien Sie so frei: Alle Infos unter http://www.gmx.net/de/go/freesms