, IP-, . , IP- NAT- -, , -, , SIP- 5060 5061.
IP- Asterisk, web- Elastix 4. , Firewall
, , , : Security → Firewall, :
Firewall Rules
, IP- IP-. , Firewall , , Activate Firewall. , Elastix Firewall , IPTables , .
Firewall, , Elastix, - Add Rule
, IP- SIP . 31.54.0.0/24. , , 4 (SIP) :
, , , ( IAX, MGCP). , web- , Elastix HTTP( 80/8080/8088), HTTPS( 443), SSH( 22), Telnet ( 23)
Define Ports
, . , , HTTP 80 8080, 80. , View → Edit 8080 Save. .
Port Knocking Interfaces
, IP-, . , , , , , .
Port Knocking Users
Port-Knocking .