IP Masquerade (MASQ / IPMASQ)

Map Of Internet 1973


IP Masquerade 1) is a networking function that allows a computer to act as an IP gateway that translates address 2) similar to the one-to-many (1:Many) NAT (Network Address Translation) servers found in:

IP Masquerade is also known as:

  • or MASQ for short,



  • a Linux host is connected to the Internet via PPP, Ethernet, etc.,
  • other “internal” computers are connected to this Linux host (via PPP, Ethernet, etc.))

the IP Masquerade feature allows the “internal” computers

  • to reach the Internet as well.
  • without any assigned IP address.

It allows a set of machines to invisibly access the Internet via the MASQ gateway.

It can be used with any lan connection (ethernet, …)

A masquerade would replace the source address:

  • of the private IP addresses (which are not routed on the internet),
  • by the public IP address of the server

Ip Masquerade vs NAT vs Proxy

how Masquerade, NAT, and Proxy differ, see what-is-masq

  • MASQ (1:Many)
  • 1:1 (true) NAT

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Map Of Internet 1973
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