On Monday 16 August 2004 02:50, meix wrote: > I am using gnugk as a proxy mode to route the calls. > But some calls go through, some calls get unconnected cdr. (the successful rate is about 27%) > I have checked log file, I got some "forward blocked, and Input/output error". > Try to see if some call comes from adsl/nat devices sometimes this devices have broken nat and so they silent mix/drop packets... so the connection times out and the gatekeeper drops it.. this happens for example when you get several endpoints behind the nat box...connected at the same time... Solution??? a gatekeeper inside the nat box and talking to the parent with a vpn.. this situation the nat logic sees only one connection.. if you have only one windows machine behind your nat (a domestic user, for example), you can set up a pptp connection to the Linux box and register the windows box in the endpoint of the pptp.. using NO crypto on the pptp channel it works very fast... and you can, for example use shape control in the tunnel logic.. On BSD for example I have boxes with hundreds of pptp tunnels working without problems... as the allocation of tun devices is fully dynamic. Sergio... ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________________ List: Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Homepage: http://www.gnugk.org/