How to deploy a shadowsocks server on a Vultr VPS Back

1. Install Shadowsocks via script

Here we are going to use the script of teddysun to install servers of Shadowsocks on the Vultr VPS server automatically:

At first, download the script:

wget --no-check-certificate https://raw.githubusercontent.com/teddysun/shadowsocks_install/master/shadowsocks.sh

Then change mode of this file to give it privilege to run:

chmod +x shadowsocks.sh

Finally run it:

./shadowsocks.sh 2>&1 | tee shadowsocks.log

If you want to install ShadowsocksR, just download the mirror like the following snippet:

wget --no-check-certificate https://raw.githubusercontent.com/teddysun/shadowsocks_install/master/shadowsocksR.sh

2. Set the password

3. Set the port

4. Select specific encryption method

According to the document, there is a comparison of encryption methods' speed, testing with 100MB datagram size.

1. x86 + Intel Core i7-6500U

   | Encryption Methods | Time Used (ms) | |-------------------:|:--------------:| | aes-128-cfb | 639 | | aes-192-cfb | 693 | | aes-256-cfb | 764 | | bf-cfb | 1103 | | camellia-128-cfb | 1038 | | camellia-192-cfb | 1261 | | camellia-256-cfb | 1266 | | cast5-cfb | 1213 | | chacha20 | 307 | | des-cfb | 1613 | | idea-cfb | 2066 | | rc2-cfb | 2214 | | rc4-md5 | 551 | | salsa20 | 263 | | seed-cfb | 1521 | | serpent-cfb | 1444 |

2. x86 + AMD Phenom II X4 N930

   | Encryption Methods | Time Used (ms) | |-------------------:|:--------------:| | aes-128-cfb | 1860 | | aes-192-cfb | 1984 | | aes-256-cfb | 2125 | | bf-cfb | 2563 | | camellia-128-cfb | 3812 | | camellia-192-cfb | 4797 | | camellia-256-cfb | 4828 | | cast5-cfb | 2766 | | chacha20 | 687 | | des-cfb | 3563 | | idea-cfb | 4562 | | rc2-cfb | 5219 | | rc4-md5 | 2640 | | salsa20 | 875 | | seed-cfb | 2657 | | serpent-cfb | 2875 |

3. ARM + Samsung Exynos 4412 Prime

   | Encryption Methods | Time Used (ms) | |-------------------:|:--------------:| | aes-128-cfb | 3837 | | aes-192-cfb | 4089 | | aes-256-cfb | 4443 | | bf-cfb | 4320 | | camellia-128-cfb | 5920 | | camellia-192-cfb | 7058 | | camellia-256-cfb | 7057 | | cast5-cfb | 4730 | | chacha20 | 1297 | | des-cfb | 8147 | | idea-cfb | 6678 | | rc2-cfb | 8846 | | rc4-md5 | 3170 | | salsa20 | 1666 | | seed-cfb | 6941 | | serpent-cfb | 4440 |

5. TCP Fast Open

To enhance the speed of connection, you can do more with followed steps:

1. Add the followed line into the file /etc/rc.local:

    # /etc/rc.local
    echo 3 > /proc/sys/net/ipv4/tcp_fastopen
   

2. Add the followed line into the file /etc/sysctl.conf:

    # /etc/sysctl.conf
    net.ipv4.tcp_fastopen = 3
   

3. Modified the attribute fast_open with true in the file /etc/shadowsocks.json
4. Restart the server of Shadowsocks:

    /etc/init.d/shadowsocks restart
   

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