Port 2835: EVTP-DATA — A Name Without a Story

What Range This Port Belongs To

Port 2835 falls in the registered ports range (1024–49151). These ports sit between the well-known ports (0–1023, reserved for foundational protocols like HTTP and SSH) and the ephemeral ports (49152–65535, grabbed temporarily by your OS when making outbound connections).

The registered range is IANA's middle ground: any organization can request a port assignment here, submit a name and a contact, and get a number reserved for their use. No RFC required. No public specification mandated. Just a name, a contact, and a slot in the database.

The IANA Entry

IANA lists port 2835 as EVTP-DATA, registered to Eric Bruno at solution-soft.com, available on both TCP and UDP.¹

That's where the documentation ends.

Solution-Soft is a real company — they make time-testing software that lets developers simulate future and past dates for application testing. Whether EVTP-DATA is something they actually shipped, a protocol they planned but never published, or a registration they made and quietly abandoned is unknown. No public specification for EVTP exists. No RFC. No developer forum posts. Searching turns up nothing but port database mirrors echoing the IANA entry back at you.

This is not uncommon. The registered port range has thousands of entries like this — names assigned years ago for products that were never widely deployed, companies that pivoted, or internal protocols that never needed public documentation because the software just worked. The port stays reserved. The Internet quietly routes around it.

What You're Likely to Find Here

If port 2835 is open on a system you're examining, it is almost certainly not EVTP-DATA. It's more likely:

• Custom application traffic — internal services frequently grab convenient port numbers without coordination
• Development or testing servers — developers pick arbitrary ports all the time
• Misconfigured or unusual software — anything that needs a port and didn't pick a well-known one

The IANA assignment doesn't mean the software is present. It means someone reserved the number.

How to Check What's Listening

On Linux or macOS:

# Show what process is listening on port 2835
sudo lsof -i :2835

# Or with netstat
sudo netstat -tlnp | grep 2835

# Or with ss (modern Linux)
sudo ss -tlnp | grep 2835

On Windows:

netstat -ano | findstr :2835

The process ID in the output can then be looked up in Task Manager or with tasklist /fi "pid eq <PID>".

If nothing is listening, the port is closed — which is normal. Most registered ports sit unused on most machines.

Why Unassigned-in-Practice Ports Matter

The registered port range exists to prevent collisions. When two applications both want port 8080, chaos ensues — only one can listen at a time, and the other fails silently or throws a confusing error. The registry is a coordination mechanism, not a guarantee of functionality.

But the registry is also a historical archive. Many entries like EVTP-DATA represent the ambitions of a specific moment: a company registering infrastructure for a product launch, a developer reserving a port for a protocol they planned to standardize. Most never got there. The port stays reserved, the software fades, and the name lingers in databases like a ghost in the registry.

Port 2835 is that kind of ghost. The name exists. The story doesn't.