Technical Analysis: Establishing Offline LAN Architecture for Call of Duty: Black Ops II via the Redacted Framework

Abstract This paper provides a detailed methodology for deploying a local area network (LAN) environment for Call of Duty: Black Ops II (2012). With the official transition of the title to backwards compatibility on modern consoles and the shifting landscape of PC server infrastructure, the "Redacted" (formerly RedactedT7) framework emerged as the definitive solution for offline play. This document outlines the necessary system prerequisites, the installation hierarchy, network configuration for LAN connectivity, and the legal and ethical considerations of modifying game binaries for private use.

Step 2: Deployment of Redacted Files

Extract the Redacted archive. The typical file structure includes:

t6rmp.exe (Multiplayer executable)

t6rzm.exe (Zombies executable)

t6rsp.exe (Campaign executable)

redacted.ini (Configuration file)

dll folder (containing the dinput8.dll or similar hook)

Copy these files directly into the root of the game directory. The dinput8.dll is critical; it acts as a wrapper that intercepts calls to the system’s DirectX input, redirecting them to the mod’s logic before the game executable loads.

Phase 2: Configuring for Offline LAN (No Internet Required after this)

Now we modify the installation to never attempt to phone home.

Edit the redacted.ini file:

Open it with Notepad.
Change the following lines:

[Network]
MasterServer=127.0.0.1
; This tells the client to look locally, not to the internet.
[Authentication]
BypassAuth=1
; This disables the login screen entirely.
[LAN]
ForceLANMode=1
; Forces the game to use LAN broadcasting instead of online matchmaking.

Save the file.

Configure the Server Engine (Host PC only):

On the machine that will act as the LAN server, create a shortcut to t6r.exe.
Right-click the shortcut > Properties > Target.
Add the following: -lan -dedicated -net_port 27016 -zone "C:\Games\Black Ops 2\zone" (Adjust path as needed).
Example: "C:\Games\Black Ops 2\t6r.exe" -lan -dedicated -map mp_raid -gametype tdm -sv_maxclients 12

Disable Windows Firewall (Or create inbound rules):

For a stress-free LAN party, temporarily disable Windows Firewall on all PCs, or create inbound rules to allow t6r.exe, t6r_zm.exe, and UDP ports 27000-27030.

Map Rotation Script for Long LAN Nights

If you are hosting a dedicated server, create rotation.txt:

mp_raid dm mp_slums dom mp_standoff koth mp_express snd

Load it with +exec rotation.txt in your server startup command.

Call Of Duty Black Ops 2 Redacted Offline Lan Install