Port 1202 is the registered port for CAICCI-PC (Computer Associates Common Communications Interface for PC), a legacy inter-process communication protocol that served as the communication backbone for Computer Associates enterprise management software.
What CAICCI Did
In the era before modern orchestration platforms, enterprises ran heterogeneous environments—mainframes, mid-range systems, Unix servers, Windows machines—all needing to communicate. CAICCI was Computer Associates' answer to this problem: a communication layer that let their AutoSys Workload Automation scheduler and other management tools coordinate across these wildly different platforms.1
The protocol wasn't elegant by modern standards. But it worked. CAICCI consisted of three daemon processes on Unix (or services on Windows):
- CAICCID — The main daemon that built IPC resources and managed the other processes
- CCICLND — The clean daemon responsible for maintaining IPC resources
- CCIRMTD — The remote daemon that handled network transmission
These processes ran on top of TCP/IP, using port 1202 for communication between systems.2
The Problem It Solved
Before centralized orchestration platforms, managing workloads across multiple platforms meant writing custom scripts for each system. CAICCI provided a common communication interface so that a job scheduler on one platform could trigger actions on another, monitor status, and handle cross-platform events.
This was the glue among various Enterprise Management components across heterogeneous environments. Not glamorous, but foundational. The enterprise applications that depended on CAICCI couldn't function without it.
Legacy Status
Computer Associates (later CA Technologies) was acquired by Broadcom in 2018 for nearly $19 billion.3 CAICCI-PC itself was marked as unsupported on September 30, 2015.4 The protocol represents a generation of enterprise software where vendors built their own communication layers because general-purpose alternatives either didn't exist or couldn't handle the requirements.
Port 1202 remains registered to this service, even though the software it supported is no longer maintained. In modern infrastructure, Kubernetes, service meshes, and cloud-native orchestration have replaced what CAICCI once provided. But for systems still running legacy enterprise automation, port 1202 might still be listening.
Checking for CAICCI
On Linux or macOS:
On Windows:
If you see port 1202 in use, you're likely looking at legacy CA enterprise management software still running in your environment. Whether that's intentional or forgotten infrastructure is worth investigating.
Why This Port Matters
Port 1202 is part of the registered ports range (1024-49151), assigned by IANA for specific services. Unlike the well-known ports (0-1023) that require root privileges, registered ports can be used by ordinary user processes once assigned.
CAICCI-PC represents an important pattern in network protocol history: vendor-specific communication layers built before standardized alternatives existed. These protocols powered critical infrastructure for decades, even if they're now considered legacy. Understanding them helps explain why certain enterprise systems are structured the way they are.
The Internet's port system includes thousands of these registered ports—some still active, many obsolete, all assigned because at some point, someone needed a standardized way for specific software to communicate. Port 1202 is one of those stories.
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