Virtual machine implementation of port forwarding example

1. Application scenarios

• #Breakthrough Internet access restrictions (such as restricting access to external networks within the company, but opening certain ports , you can use certain open ports to implement port redirection)

• Remote desktop redirection

• NC redirection to obtain Shell

2. Experimental environment

• virtualbox virtual machine

• Windows XP (as a firewall subnet client, Host -Only, ip: 1.1.1.10)

• Firewall (two virtual network cards, one using bridge to connect to the physical network, and the other using Host-Only, ip: 1.1.1.1)

• Kali Linux (install rinetd as a traffic forwarding station, bridge network, ip: 192.168.43.164)

• Windows 2003 (as Server, bridge network, ip:192.168.43.149)

3. Experimental process

• Configure fire protection rules

Enter the address http://1.1.1.1 in the XP browser, manage the firewall, and set the firewall rules to only port 53 for communication

• In the card Install and configure rinetd (use the rinetd command to open it manually before use, and pkill rientd to end the process at the end)

Installation command: apt-get install rinetd

Configuration : Open the configuration file /etc/rinetd.conf, find # bindadress bindport connectaddress connectport, and use rinetd by setting these four parameters.

bindaddress: binding address (here refers to the address of kali)

bindport: binding port

connectaddress: the address to which traffic is forwarded (here refers to windows 2003)

Connectport (break through Internet access restrictions and forward to port 80, remote desktop forwarded to port 3389)

• Access

If you want to break through the Internet restrictions, enter http://192.168.43.164:53 in the XP address bar to access the Windows 2003 page

• Remote Desktop Management

Enter mstsc in the XP side running command to open the remote desktop management tool and enter 192.168.43.164:53, which will eventually remote desktop to Windows On server

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