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README.md

SoftEther VPN in Akash

Deploy on Akash

What is SoftEther

SoftEther VPN is one of the world’s most powerful and easy-to-use multi-protocol VPN software, made by the good folks at the University of Tsukuba, Japan. It runs on Windows, Linux, Mac, FreeBSD and Solaris and is freeware and open-source. You can use SoftEther for any personal or commercial use free of charge.

What works

  • OpenVPN over a mapped 443/tcp port;
  • SoftEther over a mapped 443/tcp (or 992, 5555 tcp) ports;

What does not

  • L2TP/IPsec is not currently working due to the current Akash direct (1:1) port mapping limitation.

Ports

Since Akash does not support direct (1:1) port mapping yet, you will have to check the mapped ports (akash provider lease-status).
Your best bet would be to use OpenVPN via 443/tcp since this will work out-of-a-box in Akash.

L2TP/IPSec

Not working without 1:1 port mapping support.

  • "500:500/udp"
  • "4500:4500/udp"

OpenVPN/SSTP/SoftEther VPN

Check the mapped port (akash provider lease-status) and use that port.

  • "443:443/tcp"

OpenVPN

Not working without 1:1 port mapping support.

  • "1194:1194/udp"

SoftEther VPN

  • "5555:5555/tcp"
  • "992:992/tcp"

Notes

L2TP/IPSec

Android 12

Android 12 no longer allows legacy VPN such as L2TP/IPSec.

SoftEther does not support IKEv2/IPSec yet

Ubuntu

You can use L2TP/IPSec in Ubuntu:

sudo apt-get -y install network-manager-l2tp-gnome

Now you can add the L2TP VPN profile in Gnome Network settings.

Make sure to enable the following options:

L2TP IPSec Options

Phase 1 Algorithms: aes128-sha1-modp2048
Phase 2 Algorithms: aes128-sha1

OpenVPN

OpenVPN for Android

AUTHENTICATION/ENCRYPTION -> Encryption -> Enter data encryption methods:

AES-256-CBC

Microsoft SSTP

It's supported by the SoftEther, though, I've kept it disabled for now.

Feel free to enable it and submit a PR!

SoftEther VPN Client

Download SoftEther VPN Client software from https://github.com/SoftEtherVPN/SoftEtherVPN_Stable/releases

Get VPN credentials from "Username & Password for VPN authentication" after deployment starts.

ACCOUNT=<your vpn username>
PASSWORD=<your vpn password>

Connect to your SoftEther instance running in Akash.

Make sure to change d3akash.cloud:32505 to yours, mapped to 443/tcp port.

cd vpnclient
sudo ./vpnclient start

./vpncmd /CLIENT 127.0.0.1 /CMD NicCreate 1
./vpncmd /CLIENT 127.0.0.1 /CMD AccountCreate $ACCOUNT /SERVER:d3akash.cloud:32505 /HUB:DEFAULT /USERNAME:$ACCOUNT /NICNAME:1
./vpncmd /CLIENT 127.0.0.1 /CMD AccountPassword $ACCOUNT /TYPE:standard /PASSWORD:$PASSWORD
./vpncmd /CLIENT 127.0.0.1 /CMD AccountConnect $ACCOUNT

./vpncmd /CLIENT 127.0.0.1 /CMD AccountStatusGet $ACCOUNT

81.6.58.121 is the IP address of d3akash.cloud (yours will be different should you chose another Akash provider)

Find default network device and pass the route for your SoftEther deployment over it:

$ ip route | grep default
default via 10.1.0.1 dev wlo1 proto dhcp metric 600

$ sudo ip route add 81.6.58.121 via default dev wlo1

Only now you can run the dhclient over your SoftEther VPN network interface card:

sudo dhclient -d vpn_1

Now your VPN connection should be working!

Tearing down:

sudo pkill dhclient
./vpncmd /CLIENT 127.0.0.1 /CMD AccountDisconnect $ACCOUNT
./vpncmd /CLIENT 127.0.0.1 /CMD AccountDelete $ACCOUNT
./vpncmd /CLIENT 127.0.0.1 /CMD NicDelete 1

sudo ip route del 81.6.58.121 via default dev wlo1

References