quick ss

ss.sh

#!/usr/bin/env bash

sudo cat <<EOT >> /etc/sysctl.conf
# max open files
fs.file-max = 1024000
# 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
# 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
# forward ipv4
net.ipv4.ip_forward = 1
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv4.tcp_fastopen = 3
EOT
sudo sysctl -p
sudo apt-get update
sudo apt install -y shadowsocks-libev
rm -rf /etc/shadowsocks-libev/config.json
sudo cat <<EOT>> /etc/shadowsocks-libev/config.json
{ 
  "server":"0.0.0.0", 
  "server_port":*****, 
  "local_address": "127.0.0.1",
  "local_port":1080, 
  "password":"******", 
  "timeout":300, 
  "method":"aes-256-cfb", 
  "fast_open": true
}
EOT
sudo service shadowsocks-libev restart

curl -o- https://gist.githubusercontent.com/bydmm/d0de161e36a0afb6d1977a8cda76fc19/raw/242b2b118d80cd9e710530c71ae69934b5443a70/ss.sh | bash