TG528n router firewall message
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TG528n router firewall message
10-02-2014 10:37 AM
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Quote Feb 10 05:09:56 FIREWALL icmp check (1 of 1): Protocol: ICMP Src ip: 198.27.85.44 Dst ip: 80.229.my.ip Type: Destination Unreachable Code: Communication with Destination Host is Administratively Prohibited
Can anyone tell me what this means please?
Clearly this message has reached its destination (my IP address), so the destination has been reached, but what administrative configuration is blocking the connection?
Not worried, just want to understand the messages!
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Re: TG528n router firewall message
10-02-2014 12:58 PM
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The ICMP packet probably contained further details, which are not given in the log messages (details which are essential to match the packet to an outgoing connection). The router would be expecting to receive an ICMP destination unreachable packet that corresponds to an outgoing packet. But anyone could create and send an ICMP destination unreachable packet, which the router will ignore or write an unhelpful log message about, if there was no outgoing packet that could have resulted in that ICMP destination unreachable packet being received.
Re: TG528n router firewall message
10-02-2014 1:17 PM
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Thank you for the information. So in short, someone s spoofing replies to messages which were never set.
Cheers,
Kevin
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