cproxy can redirect TCP and DNS (UDP) traffic made by a program to a local port (such as V2Ray's dokodemo-door inbound and ss-redir).
Compared to complicated existing transparent proxy setup, cproxy usage is as easy as proxychains, but unlike proxychains, it works on any program (including static linked Go programs) and redirects DNS requests.
You can install by downloading the binary from the release page or install with cargo:
cargo install cproxy
proxychainsYou can launch a new program with cproxy with:
cproxy --port <destination-local-port> -- <your-program> --arg1 --arg2 ...
With cproxy, you can even proxy an existing process. This is very handy when you want to proxy existing system services such as docker. To do this, just run
cproxy --port <destination-local-port> --pid <existing-process-pid>
This section provides an example setup with DNS and TCP redirection. With the following V2Ray config, you can proxy your program's DNS requests with 1.1.1.1 as the DNS server, and proxy all TCP connections.
V2Ray config:
json
{
"outbounds": [
{
"protocol": "vmess",
"settings": {
"vnext": [
{
"address": "<your-server-addr>",
"port": <your-server-port>,
"security": "auto",
"users": [
{
"alterId": ...,
"id": "..."
}
]
}
],
"domainStrategy": "UseIP"
},
"streamSettings": {
"network": "tcp"
},
"tag": "out"
},
{
"protocol": "dns",
"settings": {
"network": "udp",
"address": "1.1.1.1",
"port": 53
},
"tag": "dns-out"
}
],
"dns": {
"servers": [
"1.1.1.1"
]
},
"routing": {
"rules": [
{
"port": 1082,
"network": "udp",
"inboundTag": [
"transparent"
],
"outboundTag": "dns-out",
"type": "field"
}
]
},
"inbounds": [
{
"listen": "127.0.0.1",
"port": 1082,
"protocol": "dokodemo-door",
"settings": {
"followRedirect": true,
"network": "tcp,udp"
},
"sniffing": {
"destOverride": [
"http",
"tls"
],
"enabled": true
},
"tag": "transparent"
}
]
}
Then profit with:
cproxy --port 1082 -- <your-program> --arg1 --arg2 ...
By utilizing linux cgroup net_cls, the implementation is very simple! Just read through https://github.com/NOBLES5E/cproxy/blob/master/src/main.rs :)
cproxy requires sudo and root access to modify cgroup.dokodemo-door, not SOCKS5 etc.There are some awesome existing work: