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Re: [Openvpn-users] FTP via OpenVPN over satellite - weirdness


  • Subject: Re: [Openvpn-users] FTP via OpenVPN over satellite - weirdness
  • From: Eero Volotinen <eero.volotinen@xxxxxxxxxxx>
  • Date: Tue, 22 May 2007 10:29:36 +0300

Iad Scoot kirjoitti:
> Hi,
>  
> OpenVPN 2.x on Linux with XP clients connecting over UDP. My users need 
> to access a FTP server that I've put behind the VPN server. When 
> connecting over a wired or 802.11 connection, it works fine but when 
> trying to use a satellite link users are running into some odd problems. 
> Now initially, no one could transfer more than 2-3 KB over the FTP when 
> using the satellite before it would stall and time out. In doing some 
> research, I ended up adding a MTU setting to the registry of the 
> clients, changing the MTU size to 576.
>  
> Once this was done, connecting clients could download certain file types 
> but not other file types. For example, text files and Office documents 
> would download just fine but PDF files and exe's stall almost 
> immediately. I'm guessing this is a compression issue but I am not sure 
> at this point where to look. The filetypes in question download fine 
> when not using the satellite and FTP that is not encapsulated by the VPN 
> works fine.
>  
> Any thoughts, experiences, or ideas?

Try using tcp instead of udp in openvpn, since satellite links are not 
so reliable connections than traditional ethernet..
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