# Tunnelling webinar slides

**URL:** https://forum.servoy.com/t/tunnelling-webinar-slides/8229
**Category:** Classic Servoy
**Created:** [October 10, 2007, 2:52pm UTC](https://forum.servoy.com/t/tunnelling-webinar-slides/8229 "2007-10-10T14:52:44Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![sebster](https://avatars.discourse-cdn.com/v4/letter/s/a587f6/32.png) [@sebster](https://forum.servoy.com/u/sebster)
#### Post date: [October 10, 2007, 2:52pm UTC](https://forum.servoy.com/t/tunnelling-webinar-slides/8229/1 "2007-10-10T14:52:44Z")

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Hi guys,

A while back I did a webinar on the new tunneling functionality. I’m positing the slides here for reference.

[tunnelling.pdf](https://forum.servoy.com/uploads/short-url/vcpardhRDIQYlPP6LZqHeBStEvU.pdf) (127 KB)

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### Author: ![Kahuna](https://avatars.discourse-cdn.com/v4/letter/k/8491ac/32.png) [@Kahuna](https://forum.servoy.com/u/Kahuna)
#### Post date: [October 19, 2007, 10:33am UTC](https://forum.servoy.com/t/tunnelling-webinar-slides/8229/2 "2007-10-19T10:33:18Z")

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Thanks for that Sebster - that is very informative. Clears up a lot of misconceptions regarding the black art of HTTP Tunnelling.

Cheers

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### Author: ![rafig](https://yyz2.discourse-cdn.com/flex010/user_avatar/forum.servoy.com/rafig/32/4463_2.png) [@rafig](https://forum.servoy.com/u/rafig)
#### Post date: [November 16, 2007, 5:04pm UTC](https://forum.servoy.com/t/tunnelling-webinar-slides/8229/3 "2007-11-16T17:04:50Z")

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Hi Sebster,  
thanks for the great slides!  
If I set this up, can clients internally still use Servoy Client as usual (assuming they go to the correct port number)?

I need some staff to be able to work externally sometimes, & VPN isn’t working for Mac clients, so I thought I’d try and set up http tunnelling.

Thanks,  
Rafi

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### Author: ![sebster](https://avatars.discourse-cdn.com/v4/letter/s/a587f6/32.png) [@sebster](https://forum.servoy.com/u/sebster)
#### Post date: [November 16, 2007, 5:24pm UTC](https://forum.servoy.com/t/tunnelling-webinar-slides/8229/4 "2007-11-16T17:24:05Z")

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Hi,

The clients on the internal network will also use the tunnel, but that should not really be an issue.

There is an extra option for the Java VM that you need for the Mac I believe to make the tunneling working. I keep forgetting what it is… However if you try without this option and you get an error and post it here, I’ll know where to look for the answer. ![:-)]( "Smile")

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### Author: ![svroemisse](https://avatars.discourse-cdn.com/v4/letter/s/da6949/32.png) [@svroemisse](https://forum.servoy.com/u/svroemisse)
#### Post date: [November 19, 2007, 7:40am UTC](https://forum.servoy.com/t/tunnelling-webinar-slides/8229/5 "2007-11-19T07:40:15Z")

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> sebster:  
> There is an extra option for the Java VM that you need for the Mac I believe to make the tunneling working. I keep forgetting what it is…

From the release notes:  
Only for mac: open servoy\_server.sh and change the line that starts with “java” so that it starts with java -Djava.net.preferIPv4Stack=true

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### Author: ![dpearce](https://avatars.discourse-cdn.com/v4/letter/d/e95f7d/32.png) [@dpearce](https://forum.servoy.com/u/dpearce)
#### Post date: [March 16, 2008, 10:26pm UTC](https://forum.servoy.com/t/tunnelling-webinar-slides/8229/6 "2008-03-16T22:26:06Z")

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Sebster,

The tunneling thing seems to work fine on my OS X Server (running 3.5.5), but restarting it form the servoy web admin tool doesnt work and i have to reboot my machine as the servoy\_server.sh script runs as a startup service/demon.

Am i missing something or what have i done wrong?

David