On Mon, Nov 25, 2024 at 6:40 AM prx <prx@si3t.ch> wrote:
Hi,
I can't figure out how to assign a domain name to a client vm.
What I need to do is to redirect traffic on the appropriate vm according to the domain name.
The way you do this is to assign a unique external IP address for each domain name. Then
it is straightforward to redirect each external IP to a specific internal host or VM. Alternatively
you can also do this using specific ports, where $(EXT_IP):443 goes to one VM, $(EXT_IP):444
goes to another, etc.
HTTP allows a single server to support multiple virtual hosts, but you won't know which host
is being requested until after the connection has been established using IP address and port
only. Once the session is connected, the client then includes a "Host" header with their request
to tell the HTTP server which virtual host they are trying to connect to. As this is all done after
the session is already established PF would not be used here, as PF needs to know what to do
at the time the session is being established, not afterwards. To work around this issue for HTTP
you would set up a proxy server through which all your sessions pass, e.g. squid.
-ken
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