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在Ubuntu 18.04中安装Shadowsocks

安装依赖

apt update && apt upgrade -yuf
apt install -y --no-install-recommends gettext build-essential autoconf libtool libpcre3-dev \
                                       asciidoc xmlto libev-dev libudns-dev automake libmbedtls-dev \
                                       libsodium-dev git python-m2crypto libc-ares-dev

下载Shadowsocks-libev 源码

cd /opt
git clone https://github.com/shadowsocks/shadowsocks-libev.git
cd shadowsocks-libev
git submodule update --init --recursive

编译安装

./autogen.sh
./configure
make && make install

配置 Shadowsocks Server

创建 Shadowsocks 系统用户

adduser --system --no-create-home --group shadowsocks

创建配置目录

mkdir -m 755 /etc/shadowsocks

创建Shadowsocks配置文件 /etc/shadowsocks/shadowsocks.json.将以下内容贴进去。

{
    "server":"你的公网IP",
    "server_port":8388,
    "password":"你的密码",
    "timeout":300,
    "method":"aes-256-gcm",
    "fast_open": true
}

为SS优化网络配置

编辑 /etc/sysctl.d/local.conf 文件

# max open files
fs.file-max = 51200
# max read buffer
net.core.rmem_max = 67108864
# max write buffer
net.core.wmem_max = 67108864
# default read buffer
net.core.rmem_default = 65536
# default write buffer
net.core.wmem_default = 65536
# max processor input queue
net.core.netdev_max_backlog = 4096
# max backlog
net.core.somaxconn = 4096
# resist SYN flood attacks
net.ipv4.tcp_syncookies = 1
# reuse timewait sockets when safe
net.ipv4.tcp_tw_reuse = 1
# turn off fast timewait sockets recycling
net.ipv4.tcp_tw_recycle = 0
# short FIN timeout
net.ipv4.tcp_fin_timeout = 30
# short keepalive time
net.ipv4.tcp_keepalive_time = 1200
# outbound port range
net.ipv4.ip_local_port_range = 10000 65000
# max SYN backlog
net.ipv4.tcp_max_syn_backlog = 4096
# max timewait sockets held by system simultaneously
net.ipv4.tcp_max_tw_buckets = 5000
# turn on TCP Fast Open on both client and server side
net.ipv4.tcp_fastopen = 3
# TCP receive buffer
net.ipv4.tcp_rmem = 4096 87380 67108864
# TCP write buffer
net.ipv4.tcp_wmem = 4096 65536 67108864
# turn on path MTU discovery
net.ipv4.tcp_mtu_probing = 1
# for high-latency network
net.ipv4.tcp_congestion_control = hybla
# for low-latency network, use cubic instead
net.ipv4.tcp_congestion_control = cubic

应用配置

sysctl --system

创建 Shadowsocks Systemd 服务

编辑 /etc/systemd/system/shadowsocks.service

[Unit]
Description=Shadowsocks proxy server

[Service]
User=root
Group=root
Type=simple
ExecStart=/usr/local/bin/ss-server -c /etc/shadowsocks/shadowsocks.json -a shadowsocks -v start
ExecStop=/usr/local/bin/ss-server -c /etc/shadowsocks/shadowsocks.json -a shadowsocks -v stop

[Install]
WantedBy=multi-user.target

启用并启动shadowsocks.service服务

systemctl daemon-reload
systemctl enable shadowsocks
systemctl start shadowsocks
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