[Dxspider-support] DXCluster bot

Danilo Brelih danilo.brelih at siol.net
Sat Jul 30 07:13:54 BST 2022


Hi

Exactly the same bot at work like last last year with CQWW contest. Already set 
up iptables firewall rule rejected subnet 94.156.203.0/24 here.

GL Dan



> There is a bot out there that delights in trying to confuse the Contest 
> Committee's log checking process and/or causing contestants' problems by 
> posting spurious spots using their callsign. It does this by logging in to a 
> node, "sniping" a spot and then immediately disconnecting.
>
> Here are some examples:
>
> 13:15:59 (progress) CMD: 'show/cluster ' by LZ1JZ ip: 217.61.58.23 1mS
> 13:16:00 (progress) CMD: 'DX YL2KO 14082.2' by LZ1JZ ip: 217.61.58.23 1mS
> 13:16:00 (progress) CMD: 'bye ' by LZ1JZ ip: 217.61.58.23 45mS
> 13:16:25 (progress) CMD: 'show/cluster ' by CT1GFQ ip: 217.61.58.23 0mS
> 13:16:25 (progress) CMD: 'DX ZF1A 28127.6' by CT1GFQ ip: 217.61.58.23 1mS
> 13:16:25 (progress) CMD: 'bye ' by CT1GFQ ip: 217.61.58.23 12mS
> 13:18:18 (progress) CMD: 'show/cluster ' by DK5QN ip: 217.61.58.23 0mS
> 13:18:18 (progress) CMD: 'DX NY3A 21067.2' by DK5QN ip: 217.61.58.23 1mS
> 13:18:18 (progress) CMD: 'bye ' by DK5QN ip: 217.61.58.23 13mS
> 13:55:21 (progress) CMD: 'show/cluster ' by VK6POP ip: 217.61.58.23 0mS
> 13:55:21 (progress) CMD: 'DX W3UA 21022.5' by VK6POP ip: 217.61.58.23 1mS
> 13:55:21 (progress) CMD: 'bye ' by VK6POP ip: 217.61.58.23 10mS
> 13:55:32 (progress) CMD: 'show/cluster ' by EA3HXV ip: 217.61.58.23 0mS
> 13:55:32 (progress) CMD: 'DX MI5I 14012.5' by EA3HXV ip: 217.61.58.23 2mS
> 13:55:32 (progress) CMD: 'bye ' by EA3HXV ip: 217.61.58.23 23mS
>
> To try and reduce this as much as possible, please would you block this ip 
> address 217.61.58.23 (or its subnet
> 217.61.58.0/24) using your firewall (in your router). If you are running 
> Linux/BSD you could consider installing UFW or similar software to help with 
> this task.
>
> 73 Dirk G1TLH
>
> _______________________________________________
> Dxspider-support mailing list
> Dxspider-support at tobit.co.uk
> https://mailman.tobit.co.uk/mailman/listinfo/dxspider-support
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