V2Ray 是一个与 Shadowsocks 类似的代理软件，不过V2Ray 更全能。V2Ray是一个网络转发程序，支持 TCP、mKCP、WebSocket 这3种底层传输协议，支持HTTP、Socks、Shadowsocks、VMess这4种内容传输协议（HTTP只支持传入），并且有完整的TLS实现，是一个非常强大的平台。
系统要求：debian 9及以上（对应的ubuntu16.04版本及以上，deepin15.9)
为了方便，这里使用deepin15.9示例，（ubuntu与deepin的步骤和使用命令是一致的）
这里假设你有一台已经配置好V2Ray 的服务器端，下面展示如何在linux下配置V2Ray 客户端，实现科学上网。
一、安装V2Ray
1、下载官方的V2Ray客户端脚本：
wget https://install.direct/go.sh
下载的go.sh文件会存放在终端当前面目录下：
2、执行go.sh脚本
使用命令
sudo bash go.sh
或者添加go.sh文件执行权限，然后执行
chmod u+x go.sh
./go.sh
安装成功后路径/etc/v2ray下会生成一个配置文件config.json (config.backup是之后本人对配置文件的备份)
二、修改配置文件config.json
打开路径/etc/v2ray下会生成的配置文件config.json：
原始配置文件：
修改后的配置文件：
关键注意配置中inbounds和outbounds的属性，需要注意修改的地方以下带有中文注释。
// Config file of V2Ray. This file follows standard JSON format, with comments support.
// Uncomment entries below to satisfy your needs. Also read our manual for more detail at
// https://www.v2ray.com/
{
"log": {
// By default, V2Ray writes access log to stdout.
// "access": "/path/to/access/log/file",
// By default, V2Ray write error log to stdout.
// "error": "/path/to/error/log/file",
// Log level, one of "debug", "info", "warning", "error", "none"
"loglevel": "warning"
},
// List of inbound proxy configurations.
"inbounds": [{
// Port to listen on. You may need root access if the value is less than 1024.
"port": 1080, //客户端本地监听端口，必须与本地代理端口一致
// IP address to listen on. Change to "0.0.0.0" to listen on all network interfaces.
"listen": "127.0.0.1",
// Tag of the inbound proxy. May be used for routing.
"tag": "socks-inbound",
// Protocol name of inbound proxy.
"protocol": "socks", //入口协议
// Settings of the protocol. Varies based on protocol.
"settings": {
"auth": "noauth",
"udp": false,
"ip": "127.0.0.1"
},
// Enable sniffing on TCP connection.
"sniffing": {
"enabled": true,
// Target domain will be overriden to the one carried by the connection, if the connection is HTTP or HTTPS.
"destOverride": ["http", "tls"]
}
}],
// List of outbound proxy configurations.
"outbounds": [
{
"sendThrough": "0.0.0.0",
"mux": {
"enabled": false,
"concurrency": 8
},
"protocol": "vmess",
"settings": {
"vnext": [
{
"address": "XXX.XXX.XX.XX", //服务起IP地址，必须修改为自己VPS的地址
"users": [
{
"id": "XXXXXXX-XXXX-44ac-b6fe-XXXXXXXXXX", //UID，必须与服务器一致
"alterId": 64, //与服务器一致
"security": "aes-128-gcm", //与服务器一致
"level": 1 //与服务器一致
}
],
"port": XXXXX //服务器端口必须与服务器一致
}
]
},
"tag": "XXXX", //配置名称，可选
"streamSettings": {
"wsSettings": {
"path": "",
"headers": {}
},
"quicSettings": {
"key": "key",
"security": "none",
"header": {
"type": "none"
}
},
"tlsSettings": {
"allowInsecure": false,
"alpn": [
"http/1.1"
],
"serverName": "server.cc",
"allowInsecureCiphers": false
},
"httpSettings": {
"path": ""
},
"kcpSettings": {
"header": {
"type": "none"
},
"mtu": 1350,
"congestion": false,
"tti": 50,
"uplinkCapacity": 5,
"writeBufferSize": 2,
"readBufferSize": 2,
"downlinkCapacity": 20
},
"tcpSettings": {
"header": {
"type": "none"
}
},
"security": "none",
"network": "tcp",
"sockopt": {}
}
}
],
// Transport is for global transport settings. If you have multiple transports with same settings
// (say mKCP), you may put it here, instead of in each individual inbound/outbounds.
//"transport": {},
// Routing controls how traffic from inbounds are sent to outbounds.
"routing": {
"domainStrategy": "IPOnDemand",
"rules":[
{
// Blocks access to private IPs. Remove this if you want to access your router.
"type": "field",
"ip": ["geoip:private"],
"outboundTag": "blocked"
},
{
// Blocks major ads.
"type": "field",
"domain": ["geosite:category-ads"],
"outboundTag": "blocked"
}
]
},
// Dns settings for domain resolution.
"dns": {
// Static hosts, similar to hosts file.
"hosts": {
// Match v2ray.com to another domain on CloudFlare. This domain will be used when querying IPs for v2ray.com.
"domain:v2ray.com": "www.vicemc.net",
// The following settings help to eliminate DNS poisoning in mainland China.
// It is safe to comment these out if this is not the case for you.
"domain:github.io": "pages.github.com",
"domain:wikipedia.org": "www.wikimedia.org",
"domain:shadowsocks.org": "electronicsrealm.com"
},
"servers": [
"1.1.1.1",
{
"address": "114.114.114.114",
"port": 53,
// List of domains that use this DNS first.
"domains": [
"geosite:cn"
]
},
"8.8.8.8",
"localhost"
]
},
// Policy controls some internal behavior of how V2Ray handles connections.
// It may be on connection level by user levels in 'levels', or global settings in 'system.'
"policy": {
// Connection policys by user levels
"levels": {
"0": {
"uplinkOnly": 0,
"downlinkOnly": 0
}
},
"system": {
"statsInboundUplink": false,
"statsInboundDownlink": false
}
},
// Stats enables internal stats counter.
// This setting can be used together with Policy and Api.
//"stats":{},
// Api enables gRPC APIs for external programs to communicate with V2Ray instance.
//"api": {
//"tag": "api",
//"services": [
// "HandlerService",
// "LoggerService",
// "StatsService"
//]
//},
// You may add other entries to the configuration, but they will not be recognized by V2Ray.
"other": {}
}
三、配置PAC代理模式
1、安装GenPAC
pip install genpac
2、生产pac文件
genpac --format=pac --pac-proxy="SOCKS5 127.0.0.1:1080" -o /home/jtian/Softwares/V2Ray/autoproxy.pac
3、配置本地系统代理
打开系统代理（ubuntu的类似）：
选择自动模式（Auto），并在配置路径（configuaration URL）中填入上述产生的PAC文件（以 file:// 开头）：
file:///home/jtian/Softwares/V2Ray/autoproxy.pac
然后确定保存， 上述便是PAC代理模式的系统设置。选择PAC模式代理的小伙伴可以直接跳过下属PS（全局代理）
PS:若是想全局代理模型，则在系统代理是选择手动(Manual)，并在设置代理端口为1080（与V2Ray的入口端口一致）
四、启动V2Ray
完成上述配置后，启动V2Ray即可科学上网
启动V2Ray：
sudo systemctl start v2ray
停止运行V2Ray:
sudo systemctl stop v2ray
重启V2Ray
sudo systemctl restart v2ray
PS:每次修改配置文件请重启V2Ray
至此，可以愉快的科学上网
