Mick wrote:

However, is this something to do with my firewall, or my sysctl setup?

Neither.

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$ nc -l 192.168.0.1 -p 80
Can't grab 0.0.0.0:80 with bind : Permission denied

You're not root and thus a process of yours cannot open ports <=1024.

Alexander Skwar
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It's NO USE ... I've gone to "CLUB MED"!!
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