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> |
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>> Jeremy, |
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>> I agree with MaxieZ, a combination of SEC and Iptables work nicely |
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>> in this situation and could be extended to other services like FTP, |
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>> IMAP, Web authentication, etc. I personally do not feel that security |
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>> through obscurity by changing the port numbers is a viable solution. |
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> |
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A port knocker of some sort is a much more secure solution that will |
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allow you to block all unwanted IP's but still allow for dynamic |
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addresses. There are port knockers that listen on various ports and |
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work like a combination lock to open the port, and there are others that |
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use a more secure one time pad "magic packet" kind of authentication to |
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open the port for your IP. It is more work to setup, but it is more |
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secure than just changing the port. Remember a few years ago when ssh |
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had a remote exploit? You probably shouldn't leave that port open. |
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