ICMP forwarding
Hello.
How can I forward ICMP packets from router to LAN device? I didn't find it in "Virtual servers" feature. There are only TCP and UDP packets. I tried to add my device to NAT-DNZ table but it doesn't forward ICMP packets
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Hi @Semyon98
Thanks for posting in our business forum.
I am not sure your description is correct.
First, the ICMP from LAN to WAN will be NAT-ed and it will work by the WAN pinging a WAN IP.
Second, there is no option to port forward ICMP. I think what is described is not proper in networking.
I think NAT knowledge and port forwarding should be what you studied later to understand how things work.
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I needed to forward ICMP from the GLOBAL NETWORK to the LOCAL NETWORK, not vice versa. That is, so that ICMP packets from the outside reach a specific device located in the local network with TP-Link ER605. This is done through iptables. Exactly the same as with port forwarding (TCP/UDP). There is a way on the Internet to enter the "root" of ER605. It was enough for me to set only three iptables rules to do what I want. That's horrible that it's unavailable in GUI mode. However ICMP forwarding is almost the same as TCP/UDP forwarding, just another protocol
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Hi @Semyon98
Thanks for posting in our business forum.
Semyon98 wrote
I needed to forward ICMP from the GLOBAL NETWORK to the LOCAL NETWORK, not vice versa. That is, so that ICMP packets from the outside reach a specific device located in the local network with TP-Link ER605. This is done through iptables. Exactly the same as with port forwarding (TCP/UDP). There is a way on the Internet to enter the "root" of ER605. It was enough for me to set only three iptables rules to do what I want. That's horrible that it's unavailable in GUI mode. However ICMP forwarding is almost the same as TCP/UDP forwarding, just another protocol
1. We don't help any sort of "root" login. Nor do we provide a way to enter it.
2. We don't support such a configuration as the ICMP you described.
About what you expect to do, I think it is not possible as external ports can be different but ICMP is not a protocol/port that you can specify. From the external, you cannot specify the port/protocol if it is coming as an ICMP.
For the internal, you cannot specify that either and how would it be possible for you to allow it to be NAT-ed?
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