Sentinel

Sentinel is a tool developed to act as an additional layer of security for TCP services. It serves as a "jump" proxy, adding an extra layer of encryption to connections towards TCP services. This README provides guidance on how to set up Sentinel and get it running.

Setup Instructions

1. Install Go: Install the latest version of Go using instructions at Official Golang Website

2. Navigate to the Directory: Move into the cloned repository directory.

   cd Sentinel

3. Install dependencies: Install the dependencies for this program.(golang.org/x/crypto)

   go mod tidy

4. Create Password File: Create a password file containing the passphrase for encryption. This file will be used as an argument when running Sentinel.

   echo "YourPassphraseHere" > pwdfile

   Replace "YourPassphraseHere" with the desired passphrase.

Running Sentinel

Reverse Proxy Mode

To run Sentinel in forward proxy mode, use the following command:

go run sentinel.go -l listenport -k pwdfile destination port

• listenport: Listen port for reverse-proxy mode.
• pwdfile: Path to the ASCII text passphrase file.
• destination: IP address or hostname of the target service.
• port: Port number of the target service.

Example command:

go run sentinel.go -l 2222 -k pwdfile localhost 22

Forward Proxy Mode

To run Sentinel in reverse proxy mode, use the following command:

ssh -o "ProxyCommand go run sentinel.go -k pwdfile destination port" kali@localhost

• pwdfile: Path to the ASCII text passphrase file.
• destination: IP address or hostname of the target service.
• port: Port number of the target service.

Example command:

ssh -o "ProxyCommand go run sentinel.go -k pwdfile localhost 2222" kali@localhost