If the cloud firewall's support for protecting public IP addresses is not enough, you can take the following steps to enhance security:
Implement Additional Security Layers: Use a Web Application Firewall (WAF) to protect web applications from common threats like SQL injection and cross-site scripting (XSS). For example, if your public IP hosts a website, a WAF can filter malicious traffic before it reaches your application.
Use Network Segmentation: Divide your network into smaller subnets and apply different security policies to each. This limits the impact of a potential breach. For instance, separate your database servers from web servers using private subnets and restrict access via security groups.
Enable DDoS Protection: If your public IP is under threat of Distributed Denial of Service (DDoS) attacks, deploy a dedicated DDoS protection service. This ensures your IP remains accessible during high-traffic attacks.
Leverage Intrusion Detection and Prevention Systems (IDPS): Monitor and block suspicious activities in real time. An IDPS can detect anomalies like unusual login attempts or data exfiltration attempts.
Use Private Networking and VPNs: For internal communications, avoid exposing services directly to the public internet. Use private networks and VPNs to securely connect remote users or systems.
Regularly Update Security Rules: Continuously review and update firewall rules to adapt to new threats. For example, if a new vulnerability is discovered, update your rules to block exploitation attempts.
Consider a Cloud Security Platform: If your workload is hosted on a cloud platform, use its advanced security features. For example, Tencent Cloud's Security Group and Network ACL provide granular control over inbound and outbound traffic. Additionally, Tencent Cloud Anti-DDoS can safeguard your public IP from large-scale attacks.
By combining these measures, you can strengthen the protection of your public IP addresses beyond the basic capabilities of a cloud firewall.