The option is --max-clients not --max-client Perhaps a typo in your config?
----- Eric F Crist On Dec 9, 2014, at 09:06:56, [email protected] wrote: > Hi Jan, > > Yeah, I do use --max-client 2028, but still... only 1024, so it is hard coded > into openvpn. > It is not such a big deal, as long as you know about it > In real life, it will never occur, but it is hard to emulate 2000 "real users" > I will try testing from several virtualized clients, each having their own > limit. > > Thanks, Hans. > > -----Original Message----- > From: Jan Just Keijser [mailto:[email protected]] > Sent: dinsdag 9 december 2014 15:47 > To: Witvliet, J, DMO/OPS/I&S/HIN > Cc: [email protected]; [email protected] > Subject: Re: [Openvpn-users] limits > > Hi Hans, > > [email protected] wrote: >> >> Hi all, >> >> I've been trying to do some testing in our lab. >> >> We rather find out about impact and limitations in the lab than later >> on in real live ;-) >> >> I use to think that the max number of unnels per vpn-process was >> limited to 250, >> >> But much to my surprise, this is apparently an urban-legend. >> >> From my test-laptop I could easily create 500 parallel vpn-tunnels... >> >> Trying to push it even further, I got to exact 1024 tunnels. >> >> Multiple client-processes, all with unique key/cert, towards a single >> vpn-server-process >> >> At the server-side, the openvpn-process is configured for 2048 clients >> (max-clients, & network for tunnel) >> >> The fact that it stops exactly at 1024, makes me wonder what is >> causing this limit.. >> >> Is it a kernel parameter maximizing the number of tun-devices? >> >> When examining the contents of /var/log, neither syslog nor kernel >> showd anything related >> >> Same with looking at sysctl -a. >> >> Also when starting the finale one (#1025) and raising verbose from 0 >> to 8, nothing peculiar shows in the output. >> >> So is it valid to assume there is a hardcoded (but undetectable) limit >> of 1024 tun-devices ? >> > > the server does not allocate tun or tap device per connection, all traffic is > routed over a single interface. > The limit you're hitting seems to be the max_clients default , which is 1024. > Try adding --max-clients 2000 to see if you can connect more clients ; I am > not sure what the absolute hard limit for max_clients is, however. > > HTH, > > JJK > > ______________________________________________________________________ > Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet > de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, wordt > u verzocht dat aan de afzender te melden en het bericht te verwijderen. De > Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die > verband houdt met risico's verbonden aan het electronisch verzenden van > berichten. > > This message may contain information that is not intended for you. If you are > not the addressee or if this message was sent to you by mistake, you are > requested to inform the sender and delete the message. The State accepts no > liability for damage of any kind resulting from the risks inherent in the > electronic transmission of messages. > > ------------------------------------------------------------------------------ > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > from Actuate! Instantly Supercharge Your Business Reports and Dashboards > with Interactivity, Sharing, Native Excel Exports, App Integration & more > Get technology previously reserved for billion-dollar corporations, FREE > http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk > _______________________________________________ > Openvpn-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/openvpn-users ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk _______________________________________________ Openvpn-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/openvpn-users
