![]() This means configuring the VPN gateway/finding an option, to forward broadcast traffic from VPN remote clients to the local network. So routing it is really straightforward, the issue may lie with broadcasting it correctly from the target VPN gateway. As long as the VPN client has the correct routes, it can send a broadcast packet such as 192.168.1.255 (a broadcast address) correctly to the VPN gateway across the internet. Most implementations of the magic packet use UDP port 9 although this really does not matter as long as it is routed correctly and transmitted on the same broadcast domain as the target computer. So essentially it becomes a matter of getting a regular routable packet to the target host with the "magic" sequence inside its payload. The reason for this is the "magic" sequence can be anywhere within the payload. Yes the WOL magic packet is defined within the constrains of layer 2 but this does not mean it cannot be contained inside a network and transport protocol entity which can then be used to route it across the VPN. ![]() The router forwards correctly addressed packets to the sender service using the IP and port number.Old thread but I wanted to chime in because it is still the top rated search result for "wol over vpn". The packet filter and firewall also ensure that packets that cannot be assigned to a local application are rejected. The public router IP, which also appears as the sender of data packets, is thus externally visible and addressable. Since unwanted network connections between local computers and the Internet are to be avoided as much as possible, the router IP usually comes between local IPs and destination addresses. The target application learns the sender port when the connection is established and sends the desired data packets back to the sender address. Open ports of target addresses “listen” for requests that originate via a port from private or public IPs. ![]() The destination address can be an app, a service, a website, or any other program such as a web browser. ![]() Transport protocols such as UDP (User Datagram Protocol) and TCP (Transmission Control Protocol) transfer data packets by assigning them to a specific address consisting of an IP and port number. ![]()
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