- Close the port if nothing on the host needs it.
- Identify the process that listens on it (commands below) before opening it in a firewall.
- Expose a service only to the networks that use it.
Port 887: ICL coNETion server info
Port 887 is assigned by IANA to iclcnet_svinfo (ICL coNETion server info), iclcnet-svinfo (ICL coNETion server info IANA assigned this well-formed service name as a replacement for "iclcnet_svinfo".).
887
How iclcnet_svinfo works
Other servicesThe client sends a request to port 887 and the iclcnet_svinfo service answers.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned2 registered services
- Range
- Well-known (0-1023)
- Category
- Other services
Is port 887 dangerous?
We have no specific security note for port 887. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 887
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| iclcnet_svinfo | 887 | TCP, UDP | ICL coNETion server info | - | - |
| iclcnet-svinfo | 887 | TCP, UDP | ICL coNETion server info IANA assigned this well-formed service name as a replacement for "iclcnet_svinfo". | - | - |
// source: IANA service name and port number registry
Which program uses port 887, and is it reachable?
Linux
sudo ss -ltnup 'sport = :887' # process listening on 887
sudo lsof -nP -i :887macOS
sudo lsof -nP -i :887
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 887 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 887 netstat -ano | findstr :887
From another machine
nmap -p 887 -sV <host> sudo nmap -sU -p 887 <host> nc -zv <host> 887
Block it in the firewall
sudo ufw deny 887/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 887" -Direction Inbound -LocalPort 887 -Protocol TCP -Action Block # Windows
What is port 887 used for?
Port 887 is assigned by IANA to iclcnet_svinfo (ICL coNETion server info), iclcnet-svinfo (ICL coNETion server info IANA assigned this well-formed service name as a replacement for "iclcnet_svinfo".).
Is port 887 TCP or UDP?
Port 887 is registered for TCP and UDP.
Is it safe to open port 887?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.
How do I check if port 887 is open?
On Linux run "ss -ltnup 'sport = :887'", on macOS "lsof -nP -i :887", and on Windows "netstat -ano | findstr :887" to see the local process. From another machine, "nmap -p 887 <host>" shows whether it is reachable.
Other other services ports
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp