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Fix blatant typos #4811

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Aug 6, 2025
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Fix blatant typos #4811

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15 changes: 7 additions & 8 deletions doc/scapy/advanced_usage/fwdmachine.rst
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Forwarding Machine
******************

Scapy's ``ForwardMachine`` is a utility that allows to create server that forwards packets to another server, with the ability
to modify them on-the-fly. This is similar to a "proxy", but works with any protocols over IP/IPv6. The ``ForwardMachine`` was initially designed to be used with TPROXY,
a linux feature that allows to bind a socket that received *packets to any IP destination* (in which case it properly forwards the packet to the initially
intended destination), but it also work as a standalone server.
Scapy's ``ForwardMachine`` is a utility that allows to create a server that forwards packets to another server, with the ability
to modify them on-the-fly. This is similar to a "proxy", but works on the layer 4 (rather than 5+). The ``ForwardMachine`` was initially designed to be used with TPROXY,
a linux feature that allows to bind a socket that receives *packets to any IP destination* (usually, a socket only receives packets whose destination is local), but it also work as a standalone server (that binds a normal socket).

A ``ForwardMachine`` is expected to be used over a normal Python socket, of any kind, and needs to extended with two
functions: ``xfrmcs`` and ``xfrmsc``. The first one is called whenever data is received from the client side (client-to-server), the other when the data
is received from the server.
functions: ``xfrmcs`` and ``xfrmsc``. The first one is called whenever data is received from the client side (client-to-server, "cs"), the other when the data
is received from the server (server-to-client, "sc")

``ForwardMachine`` can be used in two modes:

- **TPROXY**
- **SERVER**, in which case a normal socket is bound. Think of it as a glorified socat
- **TPROXY**, acts as a transparent proxy that intercepts one or many connections towards multiple servers
- **SERVER**, acts like a glorified socat that accepts connections towards the local server

Basic usage
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