Quote:
wouldn't want to rely on it as it does almost no packet inspection.

If you're concerned about outgoing packets, this can be an issue. But if you're worried about incoming connections, it's just going to throw virtually everything away. The only thing that's going to make it back is responses to outgoing TCP sessions (and ports you've specifically opened). If your telnet client or web browser is going to be a security hole by accepting incoming packets from remote computers you've asked it to communicate with, then it's time to look for a new telnet client or web browser.
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Bitt Faulk