V2Ray 是一個與 Shadowsocks 類似的代理軟件，不過V2Ray 更全能。V2Ray是一個網絡轉發程序，支持 TCP、mKCP、WebSocket 這3種底層傳輸協議，支持HTTP、Socks、Shadowsocks、VMess這4種內容傳輸協議（HTTP只支持傳入），並且有完整的TLS實現，是一個非常強大的平臺。
系統要求：debian 9及以上（對應的ubuntu16.04版本及以上，deepin15.9)
爲了方便，這裏使用deepin15.9示例，（ubuntu與deepin的步驟和使用命令是一致的）
這裏假設你有一臺已經配置好V2Ray 的服務器端，下面展示如何在linux下配置V2Ray 客戶端，實現科學上網。
一、安裝V2Ray
1、下載官方的V2Ray客戶端腳本：
wget https://install.direct/go.sh
下載的go.sh文件會存放在終端當前面目錄下：
2、執行go.sh腳本
使用命令
sudo bash go.sh
或者添加go.sh文件執行權限，然後執行
chmod u+x go.sh
./go.sh
安裝成功後路徑/etc/v2ray下會生成一個配置文件config.json (config.backup是之後本人對配置文件的備份)
二、修改配置文件config.json
打開路徑/etc/v2ray下會生成的配置文件config.json：
原始配置文件：
修改後的配置文件：
關鍵注意配置中inbounds和outbounds的屬性，需要注意修改的地方以下帶有中文註釋。
// 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, //客戶端本地監聽端口，必須與本地代理端口一致
// 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", //入口協議
// 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", //服務起IP地址，必須修改爲自己VPS的地址
"users": [
{
"id": "XXXXXXX-XXXX-44ac-b6fe-XXXXXXXXXX", //UID，必須與服務器一致
"alterId": 64, //與服務器一致
"security": "aes-128-gcm", //與服務器一致
"level": 1 //與服務器一致
}
],
"port": XXXXX //服務器端口必須與服務器一致
}
]
},
"tag": "XXXX", //配置名稱，可選
"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、安裝GenPAC
pip install genpac
2、生產pac文件
genpac --format=pac --pac-proxy="SOCKS5 127.0.0.1:1080" -o /home/jtian/Softwares/V2Ray/autoproxy.pac
3、配置本地系統代理
打開系統代理（ubuntu的類似）：
選擇自動模式（Auto），並在配置路徑（configuaration URL）中填入上述產生的PAC文件（以 file:// 開頭）：
file:///home/jtian/Softwares/V2Ray/autoproxy.pac
然後確定保存， 上述便是PAC代理模式的系統設置。選擇PAC模式代理的小夥伴可以直接跳過下屬PS（全局代理）
PS:若是想全局代理模型，則在系統代理是選擇手動(Manual)，並在設置代理端口爲1080（與V2Ray的入口端口一致）
四、啓動V2Ray
完成上述配置後，啓動V2Ray即可科學上網
啓動V2Ray：
sudo systemctl start v2ray
停止運行V2Ray:
sudo systemctl stop v2ray
重啓V2Ray
sudo systemctl restart v2ray
PS:每次修改配置文件請重啓V2Ray
至此，可以愉快的科學上網
