Yes as long as the router allows the ping request to pass outbound and properly tracks the request so that it can return most routers i have dealt with handle this correctly pings in though a firewall (nat or not) are often blocked. How ping works in pat. This tutorial explains how to configure port address translation (pat) in router step by step with examples learn how to connect multiple devices with remote network from single ip address through pat or nat overload, verify and troubleshoot pat configuration view pat address translation from show commands.
how ping works in pat
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How does the ping work when we launch an icmp echo request message from an internal lan private ipv4 source address towards a public ipv4 destination address (example 8888 - google server) without enabling the nat/pat protocol on our default/internal gateway router?. Most home networks use pat. in such a scenario, the internet service provider assigns a single ip address to the home network's router.when computer x logs on the internet, the router assigns the client a port number, which is appended to the internal ip address.this, in effect, gives computer x a unique address.. However, how can pat work for applications or protocols that do not use tcp or udp, such as ping, which uses icmp? icmp does not have port numbers. to solve this problem, a vendor typically uses a proprietary mechanism to place identifying information in either the packet header or the payload, to help undo translations for returning traffic..
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