Most of the companies and enterprises use proxies and firewalls for their company’s network security. But majority firewalls and proxies block most or all other services but one – http/https. They allow traffic to destination port 80 or 443 to pass in order for their employees to surf the web. So this particular behavior of the firewall can be exploited in order to connect to remote servers with services running on different ports other than 80 or 443. Let us see how.
