[Asterisk-Users] Asterisk behind LinkSys NAT Routing

[Robert Mann]

Problem I have is this.  outside firewall (extension 2003) can call me inside firewall (extension 2000) and all is fine.  If I call from inside firewall (extension 2000) to outside firewall (extension 2003) I hear no ringing and person at other end can pick up and I hear for maybe a half second then I go to voicemail.  If I add another extension on the outside then communication between outside and outside through * is not possible at all.  I know I can not be the only one who has tried to do this.  Please any help would be greatly appreciated.   My configuration.   Asterisk Server ---------------------- Linux RedHat 9.0 Asterisk CVS Update - 11/02/03 around 10:00AM PT Zaptel CVS Update - 11/02/03 around 10:00AM PT LinkSys Router with Asterisk server set as DMZ host.   Desktop Computer #1 ------------------------------- Windows XP Xten X-Pro build 1082 Behind same LinkSys router. extension 2000 in asterisk   Desktop Computer #2 ------------------------------- Windows XP Xten X-Pro build 1082 Not behind any firewall. extension 2003 in asterisk   sip.conf   ; General definitions for the sip.conf file. [general] port = 5060 bindaddr = 0.0.0.0 allow = gsm context = bogon-calls ; Default any unknown calls ; [2000] type=friend username=2000 secret=grinch host=dynamic defaultip=192.168.1.210 context=trusted nat=yes qualify=1000 mailbox=2000 ; [2003] type=friend username=2003 secret=grinch host=dynamic context=normal nat=yes canreinvite=no mailbox=2003   extensions.conf   [globals]                                                             ; Variables to VoIP extensions by name ROBERT=SIP/2000                                                    [general] static=yes       ; These two lines prevent the command-line interface writeprotect=yes ; from overwriting the config file. Leave them here.   [bogon-calls] ; Bogus calls if they find there way in to the system without authorization some how. exten => _.,1,Congestion ; if someone accidentally finds there way here give them a fast busy.   [stations] exten => 2000,1,Dial(SIP/2000,20) exten => 2000,2,Voicemail(u2000) exten => 2000,102,Voicemail(b2000) exten => 2000,103,Hangup         ; exten => 2003,1,Dial(SIP/2003,20) exten => 2003,2,Voicemail(u2003) exten => 2003,102,Voicemail(b2003) exten => 2003,103,Hangup             ; exten => 2997,1,VoicemailMain(2997) exten => 2998,1,VoicemailMain(2998) exten => 2999,1,VoicemailMain(${CALLERIDNUM}) ; ; Direct Dial.  For those trusted to use the phone properly. [directdial] exten => 9,1,Dial(Zap/g1/${EXTEN:1}) exten => 9,2,Congestion include => international ; ; International calling code and prefix used for users trusted to make international calls. [international] exten => _9011.,1,Dial(Zap/g1/${EXTEN:1}) exten => _9011.,2,Congestion include => longdistance ; ; Long distance calling code and prefix used for users trusted to make long distance calls. [longdistance] exten => _91NXXNXXXXXX,1,Dial(Zap/g1/${EXTEN:1}) exten => _91NXXNXXXXXX,2,Congestion include => local ; ; Local calling code and prefix used for users trusted to make local calls. [local] exten => _9NXXXXXX,1,Dial(Zap/g1/${EXTEN:1}) exten => _9NXXXXXX,2,Congestion ; ; Trusted users from sip.conf who are able to fully use the phone. [trusted] include => stations include => directdial ; ; Normal users from sip.conf who are able to make local calls only. [normal] include => stations include => local ; ; Public area for people who are only allowed to make calls to other extensions [public] include => stations ; ; When someone calls the work line of XXX-XXX-XXXX they are directed through this. [inbound-work] exten => s,1,Zapateller(answer|nocallerid) exten => s,2,Dial(${ROBERT},20) exten => s,3,Voicemail(u2997) exten => s,4,Hangup exten => s,103,Voicemail(b2997) exten => s,104,Hangup ; ; When someone calls the home line of XXX-XXX-XXXX they are directed through this. [inbound-home]                                                                 exten => s,1,Dial(${ROBERT},20)                        exten => s,2,Voicemail(u2998) exten => s,3,Hangup exten => s,102,Voicemail(b2998) exten => s,103,Hangup   Robert