Bactrack 5 r2 armitage how to bypass firewall

[fearx5683]

im using bactrack 5 r2. When i launch armitage by typing in armitage into the terminal it comes up fine. then once im in armitage i put the ip address that i want to gain access to. Well heres the problem how can i bypass or turn off firewall remotely so that i can get access into the computer. The computer is linux and windows xp 2003

[maverik35]

Need to see what is in ports..Then try to see what ports are open or which ones are exploitables...Then depending on the port service "listenning", use a exploit and payload..Not all systems are vulnerables.

Try nmap first, you can even try some scripts within nmap (NSE)..Try metasploit. All depends on the ports and status.....