'Port Forwarding Tester', and '15 Must-Have Firefox Tricks'

Dennis Faas's picture


The port forwarding tester is a utility used to identify your external IP address and detect open ports on your connection. This tool is useful for finding out if your port forwarding is set up correctly or if your server applications are being blocked by a firewall. It is important to note that some ports, such as port 25, are often blocked at the ISP level in an attempt to prevent malicious activity.


15 Must-Have Firefox Tricks

How to tweak, hack and bend Firefox to your will.


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