Re: PPTPD upload speed bottleneck

Hi Greg,

----- Original Message -----
> From: "Greg Scott" <[email protected]>
> To: "Gustavo Homem" <[email protected]>, [email protected]
> Sent: Sunday, November 17, 2013 10:58:02 AM
> Subject: RE: [Poptop-server] PPTPD upload speed bottleneck
> 
> 
> 
> 
> You want to make your tunnel MTU a little bit smaller than the
> smallest ISP router MTU in the path. I usually just used whatever
> default MTU value was in place for the raw interfaces. I don’t
> remember anything other than 1500. So I generally used an MTU of
> 1400 for my tunnels, figuring 100 bytes should be plenty for
> whatever overhead was needed. Almost every ISP I’ve ever run across
> uses an MTU of 1500 across their routers.
>  
> 
> I had one case where every time somebody started an RDP session over
> the tunnel, the whole tunnel dropped and the user had to reconnect.
> Everything else other than RDP worked fine. Very strange. In this
> case, the ISP at the customer site did funny stuff with its MTU, and
> RDP apparently uses big packets. So I had to make my tunnel MTU
> smaller than the ISP MTU. These are the firewall rules I settled on:
> 

Is it not enough to have pptpd and pptp client set the MTU on the interfaces? Why are you doing this at the firewall level?

Note that we are not having problems with traffic other than the VPN traffic.

Cheers
Gustavo

-- 
Angulo Sólido - Tecnologias de Informação
http://angulosolido.pt

------------------------------------------------------------------------------
DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps
OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access
Free app hosting. Or install the open source package on any LAMP server.
Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native!
http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk
_______________________________________________
Poptop-server mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/poptop-server