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> **Possible Duplicate:**  
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> [Should I enable Firewall and AntiVirus on a VirtualPC VM?](https://superuser.com/questions/441214/should-i-enable-firewall-and-antivirus-on-a-virtualpc-vm) 
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I have good firewall on host OS (WinXP), Do I need additional firewall in guest OS (Fedora)?