Valiant is an NGO that has very strong opinions against the government. It has faced a number of legal notices and its IP address has been blocked numerous times for voicing out dissent on online forums and social media. Valiant has requested your help as a network analyst to find a way around this problem so that it won't receive any more legal notices due to IP address tracking. Which of the following methods will you use in this scenario?
1. Proxy server
2. Firewall
3. IDS
4. IPS