I've just installed fs-1.0.4pre7 quick-and-dirty and tried to connect a softphone to fs, but the phone refuses to register. I have tried two different ones (EyeBeam and Zoiper), but neither can register. I have turned off all firewalls(XP firewall, Outpost) on the client machine where the softphone is installed. I can ping the freeswitch machine from the client and I can ping the client machine from the freeswitch machine. The wireshark conversation is: 12 1.539643 192.168.10.11 192.168.10.29 SIP Request: SUBSCRIBE sip:1000@192.168.10.29;transport=UDP 13 1.539676 192.168.10.11 192.168.10.29 SIP Request: SUBSCRIBE sip:1000@192.168.10.29;transport=UDP 14 1.539722 192.168.10.11 192.168.10.29 SIP Request: REGISTER sip:192.168.10.29;transport=UDP 15 1.539757 192.168.10.11 192.168.10.29 SIP Request: REGISTER sip:192.168.10.29;transport=UDP 16 1.540027 192.168.10.29 192.168.10.11 ICMP Destination unreachable (Host administratively prohibited) where 192.168.10.11 is the client machine and 192.168.10.29 is freeswitch. Freeswitch is running on CentOS 5.3. What is keeping the freeswitch machine from pinging the client? Thanks, Lars