Can't externally ping No-IP hostname

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vinushka

Reputable
Jun 27, 2014
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4,660
I have an account set up with No-IP with a '.ddns.net' hostname which I have set up on my router (BT HomeHub 3). I can use this address to access my NAS which I have port forwarded. However, I cannot ping 'xxxx.ddns.net' from an external network, but I can from the same network that the hostname is set up with.
What can I enable or disable to allow me to ping the address?
 
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bicycle_repair_man

bicycle_repair_man

Splendid
Jan 10, 2014
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Your firewall will allow an internal (LAN) ping, but not an external (WAN) ping. The reason being is that it opens up your router to DoS and DDoS attacks.

I have the Home Hub 5, which allows me to create firewall policies based on specific services and port numbers. Ping uses the ICMP service, but like I said, if you open this up to the Internet it leaves your router and internal network at risk.

Ideally, you want to configure a firewall policy so that only specific IP addresses on the Internet are able to use the ICMP service.
 
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