Port 11111Viral Computing Environment

Port assigned for the Viral Computing Environment (VCE), associated with Fred Cohen.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 1/10
lookups: 0

also known as vce

Technical Details

what runs on :11111

Viral Computing Environment is registered on port :11111 over tcp and udp to Fred Cohen. We don't have a technical write-up for it beyond the IANA registry entry.

In nmap's internet-wide scan data this port is found open rarely. What's listening is often not the registered service, so check before you assume.

find what's listening on :11111

this machine

# linux
sudo ss -tulpn 'sport = :11111'

# macos / bsd
sudo lsof -nP -i :11111

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :11111

another host

nmap -sV -p T:11111 <host>
sudo nmap -sU -sV -p U:11111 <host>

run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.

add technical details

Security Information

exposure of :11111

risk score

1/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

no security notes recorded for :11111 yet

known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.

Record

iana registry entry

port: :11111
service: Viral Computing Environment
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 1/10safe
category: uncategorised
usage: TCP and UDP port 11111 is assigned to the Viral Computing Environment (VCE). The assignment is registered to Fred Cohen, but the registry provides no further implementation or deployment details.
lookups: 0rank 993
added: 2026-09-09
updated: 2026-09-09
references: IANA service name registry — port 11111

Something wrong?

This record is maintained by the engineers who use port 11111. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-09-09.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

browse categories →

ports registered around :11111, by lookups.

port	service	proto	category	risk
:11162	Sun Cacao JMXMP	TCPUDP	System	safe
:11095	Nest Weave	TCPUDPtls	IoT	safe
:11103	OrigoDB Server Sync Interface	TCP	Databases	safe
:11104	NetApp Intercluster Management	TCP	File Transfer	caution
:11105	NetApp Intercluster Data	TCPtls	File Transfer	caution
:11106	SGI LK Licensing	TCPUDP	Network Services	safe
:11108	MYQ Termlink	UDP	Network Services	safe
:11110	SGI DMF SOAP	TCP	Web Services	safe

risk mix of the 8 listed

safe75%
caution25%

2 of 8 encrypted

Port :11111Viral Computing Environment

Technical Details

Security Information

Related Ports

Port 11111Viral Computing Environment