【Problem Description】:
The CTI fails to connect to the SMC. The web page of the SMC displays a message indicating that the CTI is offline.
【Problem Analysis】:
The captured packets show that the source IP address of the message sent by the CTI platform to the SMC is an internal IP address. As a result, the message cannot be sent to the SMC. In normal cases, after the CTI is installed, an iptables rule is added so that packets are sent to port 443 through the external IP address when they are sent through the internal IP address. In addition, the source IP address is changed to the external IP address. It is suspected that the iptables rules are manually modified after the CTI is installed.
【Root Cause】:
The iptables rules are manually modified after the CTI is installed.
【Solution Description】:
Manually add iptables rules and add the rules to the /etc/init.d/boot.local file
