SSH: My Favorite Tool

Explore the power and versatility of SSH, the essential tool for secure remote access.

Lock, Key, and Command: The Magic of Secure Shell

Secure Shell (SSH) is a cryptographic network protocol used for secure data communication, remote shell services, and command execution. It's an indispensable tool for system administrators, developers, and anyone who needs secure remote access to servers and other networked devices. With SSH, you can manage your servers from anywhere in the world, transfer files securely, and even tunnel traffic through encrypted channels, all with robust authentication mechanisms and encryption to ensure your data remains private and protected. SSH is my favorite tool because it provides a secure, efficient, and versatile way to manage and interact with remote systems, making it an essential part of any IT professional's toolkit.

Most commonly used methods of connections

Copy Paste - SSH -X option enables X11 forwarding, allowing you to run graphical applications on the remote server and have their display output on your local machine.

ssh macpro -X
Needs to set X11Forwarding yes

SSH -J option specifies a jump host, allowing you to connect to a remote server through an intermediate server.

ssh -J first-user@IP 2-user@192.168.100.246

Local Port Forwarding ssh -L
Access to resources that I can't access, like internet Database, RDP
```
            
            	Tambien funciona con socat
socat -dd tcp4-listen:8080,fork,reuseaddr tcp4:IP:8080

            		**** ssh configuration on XPS server needs to have: ***
            	****  AllowTcpForwarding yes  ****


curl localhost:8888
curl: (7) Failed to connect to localhost port 8888 after 0 ms: Couldn't connect to server 
        
ssh -L 8888:192.168.80.246:8080 xps
        
curl localhost:8888
Internal server web
flag:as1ds5a6d1a65
        
```

Remote Port Forwarding ssh -R
I want my own server be access to anyone
```
            
            	**** ssh configuration on public server needs to have: ***
            	**** GatewayPorts yes ***


❯ ip r
default via 192.168.88.1 dev eth0 
192.168.88.0/24 dev eth0 proto kernel scope link src 192.168.88.68 
❯ curl http://192.168.88.93:8888/
curl: (7) Failed to connect to 192.168.88.93 port 8888 after 0 ms: Couldn't connect to server 

#This is execute on XPS        
ssh -R 8888:192.168.80.246:8080 public@192.168.88.93 
        
curl http://192.168.88.93:8888/
Internal server web
flag2:E2lsa3aasd5A
        
```

SSH -D 1080 proxy
Setting up foxyproxy
```
            
**** ssh configuration on public server needs to have: ***
            	**** AllowTcpForwarding yes ***

             
        
ssh -D 1080 user@192.168.88.13 -p 2246
        

        
```

Sshuttle

Sshuttle