Define Strict Routing Rules
It's crucial that you adhere to the following guidelines when configuring IP-to-IP Routing rules:
| ■ | Make sure that your routing rules are accurate and correctly defined. Inaccurate or weak routing rules can easily result in Service Theft. | 
| ■ | Make sure that your routing rules from source IP Group to destination IP Group are accurately defined for the desired call routing outcome. | 
| ■ | If possible, avoid using the asterisk (*) symbol to indicate "any" for a specific parameter in your routing rule. This constitutes weak routing rules that can be vulnerable to attackers. For strong routing rules, enter specific alphanumerical values instead of the asterisk. |