Re: [Proftpd-user] [SPAM] Re: Port in virtual hosts

W dniu 2023-07-19 17:04, TJ Saunders napisał(a):
>>>> I haven't found that infomation clear in documentation so I'm 
>>>> asking:
>>>> if I would like to use lots of virtual hosts in proftpd do I have to
>>>> use different port in every virtualhost or can be the same for whole
>>>> server ?
>>> 
>>> While FTP protocol supports HOST command, and ProFTPD does support 
>>> it,
>>> I am not sure if many clients support that.
>>> 
>>> So, generally, you can define virtual hosts using different local IP
>>> addresses, different ports, but it's not safe to assume that you can
>>> run virtual hosts on the same host:port.
>>> 
>>> You can try but it may not work (unless you can order your customers
>>> to use particular client that supports it)
>> 
>> "You can try it"... I thought someone here will be sure that the same
>> port on virtual hosts is possible or not ;)
> 
> The short answer is: yes, it's possible to have multiple virtual hosts
> on the same IP address and port.
> 
> However, doing so requires support from clients as well.  As Fantomas
> pointed out, it requires that FTP clients send the HOST command -- and
> not all FTP clients do so.  This command is equivalent to HTTP's Host
> header, but is newer, and so not every FTP client implementation has
> been updated to use it.  Without that HOST command, ProFTPD only has
> the IP address/port combination from a client TCP connection to use
> for determining which virtual host to use -- and if there are many
> virtual hosts (differentiated by name) using the same IP address and
> port, it won't work as you expect.
> 
> Hope this helps,
> TJ

Now all is clear.
Please add that answer to doc about virtual hosts - its worth it.
Thank you very much :)
wrkilu



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