16.4 Evading Firewalls

Bypassing Firewall through SSH Tunneling Method

• OpenSSH: Attackers use OpenSSH to encrypt and tunnel all the traffic from a local machine to a remote machine to avoid detection by perimeter security controls.

SSH Tunneling Tool: Bitvise

• Bitvise SSH Server provides secure remote login capabilities to Windows workstations and servers.
• SSH Client includes powerful tunneling features including dynamic port forwarding through an integrated proxy, and also remote administration for the SSH Server.