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speed over vpn

 
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isoriaa



Joined: 07 Jan 2008
Posts: 3

PostPosted: Wed Jan 09, 2008 11:44 pm    Post subject: speed over vpn Reply with quote

Hi

I'm testing vpn. I have two computers conected with a crossed cable. I configure a von lan-to-lan. I tray to transfer a file with ftp and:

if i do it over vpn I get a 2.5MB/s transfer. If I do it outside vpn, I mean over the wan ip of ZS with a virtual server I get a 12MB/s speed.

Is it normal that the speed over a vpn lan-to-lan is slower tha directly.

thanks
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szhukov



Joined: 01 Sep 2007
Posts: 4

PostPosted: Tue Jan 15, 2008 11:31 am    Post subject: Reply with quote

Yes, it's normal because you have tunneling and encryption performance hits.
Tunneling traffic eats may be 10% or more - don't know, and encryption may reduce traffic by 20-60% according to selected encryption protocol.
There are not only packets payload but additional work for CPU and/or NIC. You can try this by copying file over, for example, ftp protocol, and then over ssh (scp).
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