CUTTER(8)

📦 version 1.04, in ubuntu jammy

💖 CUTTER(8) 💖

okay bestie, grab a strawberry 🍓 and sit down, because this is cutter from the System Manager's Manual — and yes, the (8) means it's a big-girl system administration tool, not some lil userland baby. she's giving root-only, firewall-energy, main character vibes 👑

✨ NAME ✨

cutter — cut tcp/ip connections 🔪💻

🌸 SYNOPSIS 🌸

cutter ipaddress1 [ port1 [ ipaddress2 [ port2  ]  ]  ]

like... that's the whole shape of her. four lil nesting brackets and she's done 💅

🦋 DESCRIPTION 🦋

okay so. Cutter is an open source program that lets Linux firewall administrators abort TCP/IP connections routed over the firewall or router on which it's being run. periodt.

and the way that it is literally not designed to work on the systems hosting the server or the client using the connection?? no cap. she only works on a linux firewall or router that the connection is made over. and bestie, she must be run by the root user of the firewall. like, root or nothing. 👑

💀 WARNING 💀

not me having to say this but here we are 🙈

Cutter has been designed for use as an administrators tool for Linux firewalls. It's use (as is, or modified) for any other purpose is not sanctioned by the author. so, and I quote, do not use this tool as a parachute, or to dry your cat, chill meat, answer your phone, drive you car, teach your kids to read or attack other people's computer systems or networks. 😭 not the cat 😭

This software has been designed for legal and appropriate use by network security administrators and the like. It has been written as part of a larger Linux firewall project, targeting at controlling traffic from peer-to-peer software such as Kazaa, iMesh and others into and out of a private network. It is not designed as a tool for malicious use and the author in no way sanctions such use. 🫶

Users of the software should be aware that it's actions are easily detectable using a number of readily available network monitoring tools, and it makes no attempt to disguise it's actions. Malicious use of "cutter" could result in a jail sentence in a number of countries around the world. 🚨 bestie. jail. fr fr.

The author is not responsible for the results of using this software or documented technique (whether in it's original form, or modified). It is provided "as is" in the hope that it will be useful, but no guarantees are made about it's use.

🎀 USAGE 🎀

Cutter can be called using one of the following four syntaxes.

⭐ syntax one — just the ip

cutter ip-address

Example:

cutter 10.10.0.45

Cuts all connections passing through the firewall between any ports on the specified ip-address (either a "private" or "public" address) and any other hosts. This can be used to close down all incoming connections to a particular server, all outgoing connections from a particular client or all outgoing connections to a server. so basically the nuke button 🔥

⭐ syntax two — ip + port

cutter ip-address port

Example:

cutter 200.1.2.3 80

Cuts all connections to or from the specified ip-address/port pair. This allows the user to be a little more specific than the previous example and allows targeting of specific services on specific hosts. she's being precise now 💅

⭐ syntax three — ip, port, other ip

cutter ip-address-1 port-1 ip-address-2

Example:

cutter 200.1.2.3 22 10.10.0.45

Cuts all connections between ip-address-2 and ip-address-1/port-1. This allows the user to cut connections between a specified "client" and a particular service on a specified host. Our example closes host 10.10.0.45's SSH connection to server 200.1.2.3. iconic tbh 🌈

⭐ syntax four — the full four-piece

cutter ip-address-1 port-1 ip-address-2 port-2

Example:

cutter 200.1.2.3 22 10.10.0.45 32451

Cuts the specific connection between the two ip/port number pairs given. surgical. obsessed. 🔪✨

👑 STATUS 👑

Cutter 1.04 should be considered EXPERIMENTAL. 😳

The author is releasing a tool that works on the systems which he has access to (namely: IPCop and RedHat Linux), and he is seeking input on it's use on other systems, ideas for improvement, offers of sponsorship — etc. so like, slide into his inbox bestie 🫶

🧚 ADDITIONAL DOCUMENTATION 🧚

This program is documented at:

<http://www.digitage.co.uk/digitage/software/linux-security/cutter>

💜 AUTHOR 💜

Blars Blarson adapted the README and web page written by Chris Lowth into this man page for debian package of cutter. This man page may be distributed under the terms of the Gnu GPL version 2.

and that's the whole page bestie, you ate that 🍓✨

sooo the source/version vibe here is the debian package of cutter page dated August, 2015, and she signs off as CUTTER(8). byeeee 💖💅🦋

📦 where this page comes from