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Tiny Personal Firewall 2.0 is a simple personal firewall for Windows based machines. It is reported to allow any communication over port 53 for DNS purposes; this could be problematic if the DNS server was not explicitely defined in the firewall configuration. This could open the way for a trojan that uses port 53 to bypass the firewall. ATGuard 3.2 is also reported to be vulnerable to this issue.

Tiny Personal Firewall 2.0 is a simple personal firewall for Windows based machines. It is reported to allow any communication over port 53 for DNS purposes; this could be problematic if the DNS server was not explicitely defined in the firewall configuration. This could open the way for a trojan that uses port 53 to bypass the firewall. ATGuard 3.2 is also reported to be vulnerable to this issue.