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Kind Attachment Name Size Version Date Modified Author Change note
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advanced_upload.png 25.7 kB 2 09-Oct-2016 18:14 Ben Spink
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crushtunnel_diagram.png 80.7 kB 1 09-Oct-2016 18:14 Ben Spink
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download_basket.png 39.9 kB 1 09-Oct-2016 18:14 Ben Spink
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jnlp.png 25.7 kB 1 09-Oct-2016 18:14 Ben Spink
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ports.png 50.1 kB 2 09-Oct-2016 18:14 Ben Spink
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prefs_tunnel.png 77.9 kB 3 09-Oct-2016 18:14 Ben Spink
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tunnel_only.png 74.7 kB 1 09-Oct-2016 18:14 Ben Spink
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user_tunnel.png 22.0 kB 2 09-Oct-2016 18:14 Ben Spink
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user_tunnel_client.png 268.4 kB 2 09-Oct-2016 18:14 Halmágyi Árpád

This page (revision-15) was last changed on 09-Oct-2016 18:14 by Ben Spink

This page was created on 09-Oct-2016 18:14 by Ben Spink

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Difference between version and

At line 1 added 4 lines
Bandwidth acceleration using HTTPS and not using UDP. Same results, but much more firewall and corporate network friendly. CrushTunnel uses patent pending technology.
[attachments|crushtunnel_diagram.png]
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Create a new tunnel, using the HTTP(S) Tunnel type. Enable Auto start, and Use Chunked Encoding. The name is not important, but something simple will do.
Create a new tunnel, using the HTTP(S) Tunnel type. Enable Auto start. The name is not important, but something simple will do.
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!!!HTTP
!!!Remote Endpoint Scenario
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Using the normal WebInterface now will allow for accelerated transfers when you use the advanced uploader, or advanced downloader.
The remote endpoint scenario takes this ability one step further by creating always-on CrushTunnel connections that are extending the location of where your CrushFTP server presents itself.
The scenario would be a main server located in the US, but high speed endpoint locations located in Europe, and Australia.
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[attachments|advanced_upload.png]
A wildcard certificate should be used on the main server in the USA. For example: *.crushftp.com, and then using DNS entries of:
us.crushftp.com —> USA IP 0 ms latency
eu.crushftp.com —> Europe IP 120ms latency
au.crushftp.com —> Australia IP 220ms latency
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To get the advanced downloader, add the files into a basket by right clicking and selecting Add To Basket. Then use the advanced link to download.
A virtual machine located in each of those zones would receive the connection, and simply tunnel it to the opposite side (which is always us.crushftp.com). The cert the browser would be
presented would always be the same *.crushftp.com, so all of those DNS names would be successfully matched and allowed.
At line 40 changed one line
[attachments|download_basket.png]
Under normal conditions a 220ms of latency would yield about 2.4Mbit of speed per channel. This assumes default TCP tuning on both ends. Using 20 channels, this would now yield 48Mbit of
speed. Adjust the number of channels as needed and appropriate.
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No data would be stored on these remote server locations, all data is simply being streamed. Users that are in Australia for instance would use the nearby server’s DNS to get much faster
speeds in file transfer since their local machine’s latency to that server would probably be under 40ms, or faster. The end points server locations would need to be located in ideal locations to
serve the customers with the lowest latency.
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!!!FTP
The CrushTunnel solution is CPU intensive, but light on disk usage. Disk would only be used for logging, nothing else. The CPU is used heavily in the HTTPS encryption, and tunnel
management. The benefits include on single location of data, one storage location, and one set of users.
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With a few more steps, you can also configure FTP to be tunnels. The FTP protocol can be sent over the HTTPS encrypted tunnel and get the same speed gains as the WebInterface's automatic Java applet handling. To do this, we use a java web start application that can start and stop the tunnel for a local FTP client to connect through.
We make a dummy user named "tunnel" that has no access to anything, other than the ability to login, and startup a secure tunnel.
[attachments|tunnel_only.png]
Now you can use a URL like this in your web browser to download and start the tunnel for the FTP client.
https://www.domain.com/?u=tunnel&p=tunnel&path=/WebInterface/CrushTunnel.jnlp
When this launches, it will ask you for the tunnel username. This will be "tunnel" that you configured above. You can also hard code this if you make a copy of this jnlp file so the user doesn't need to enter in this information ever time. Add in these two lines to the properties:
<property name="crushtunnel.remote.user" value="tunnel"/>
<property name="crushtunnel.remote.pass" value="tunnel"/>
[attachments|jnlp.png]
Once the tunnel has been started, you can use any FTP client on the same machine, and go to:
ftp://user:pass@127.0.0.1:55555/
[attachments|user_tunnel_client.png]
Version Date Modified Size Author Changes ... Change note
15 09-Oct-2016 18:14 3.78 kB Ben Spink to previous
14 09-Oct-2016 18:14 3.741 kB Halmágyi Árpád to previous | to last
13 09-Oct-2016 18:14 3.701 kB Halmágyi Árpád to previous | to last
12 09-Oct-2016 18:14 1.828 kB Ben Spink to previous | to last
11 09-Oct-2016 18:14 2.206 kB Ben Spink to previous | to last
10 09-Oct-2016 18:14 2.232 kB Ben Spink to previous | to last
9 09-Oct-2016 18:14 2.146 kB Ben Spink to previous | to last
8 09-Oct-2016 18:14 2.019 kB Ben Spink to previous | to last
7 09-Oct-2016 18:14 3.306 kB Ben Spink to previous | to last
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5 09-Oct-2016 18:14 3.239 kB Ben Spink to previous | to last
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« This page (revision-15) was last changed on 09-Oct-2016 18:14 by Ben Spink
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