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General Discussion / Re: OPNSense WAN Shows All Ports Open
« on: November 02, 2023, 10:16:58 pm »
I severly doubt that all ports were open. Even if your firewall lets them through, somebody would have to listen and answer on all ports which is highly unlikely.
I just tested my own firewall, first with common ports (showing the ones I expected as open) and then the first 1056 ports. To my surprise, all of them were closed (i.e. the showed up as green, not meaning that they are open, but green meaning OK = closed). This was because crowdsec noticed the port scan and banned the source IP for 4 hours.
I just tested my own firewall, first with common ports (showing the ones I expected as open) and then the first 1056 ports. To my surprise, all of them were closed (i.e. the showed up as green, not meaning that they are open, but green meaning OK = closed). This was because crowdsec noticed the port scan and banned the source IP for 4 hours.