HTTPfy

Port 1882 (ecsqdmn)

IANA assigns port 1882 to ecsqdmn: CA eTrust Common Services.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ecsqdmn TCP CA eTrust Common Services Paul Wissmiller -
ecsqdmn UDP CA eTrust Common Services Paul Wissmiller -

Check what is listening on port 1882

Linux: is anything listening on TCP 1882?
sudo ss -tlnp 'sport = :1882'
Linux: UDP 1882
sudo ss -ulnp 'sport = :1882'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1882
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1882 '
Windows (Command Prompt)
netstat -ano | findstr :1882
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1882 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1882
From Windows
Test-NetConnection HOST -Port 1882
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1882

Block port 1882 in the firewall

ufw
sudo ufw deny 1882/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1882 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1882 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1882' -Direction Inbound -Protocol TCP -LocalPort 1882 -Action Block
ufw
sudo ufw deny 1882/udp
iptables
sudo iptables -A INPUT -p udp --dport 1882 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1882 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1882' -Direction Inbound -Protocol UDP -LocalPort 1882 -Action Block

Related ports

1880vsat-control1881ibm-mqseries21883MQTT1884idmaps

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.