Hi All on the list, I've an asterisk running in the internal lan behind a cisco2610 configured as firewall. Currently the 2610 forwards to the internal lan only the traffic for the web, pop3 and mail. Since I got a new SIP account from an external SIP provider I need to forward internally the udp 5060 and a range of RTP ports starting from 10000 to 20000. For the udp port 5060 that's not a problem it's just one line like: ip nat inside static udp 192.168.0.110 5060 interface Dialer1 5060 So, what about a range of ports? There a way to specify a range of port to forward in the 2610? Thanks in advance, Roberto Fichera.