HTTPfy

Port 3132 (ms-rule-engine)

IANA assigns port 3132 to ms-rule-engine: Microsoft Business Rule Engine Update Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ms-rule-engine TCP Microsoft Business Rule Engine Update Service Anush Kumar -
ms-rule-engine UDP Microsoft Business Rule Engine Update Service Anush Kumar -

Check what is listening on port 3132

Linux: is anything listening on TCP 3132?
sudo ss -tlnp 'sport = :3132'
Linux: UDP 3132
sudo ss -ulnp 'sport = :3132'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3132
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3132 '
Windows (Command Prompt)
netstat -ano | findstr :3132
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3132 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3132
From Windows
Test-NetConnection HOST -Port 3132
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3132

Block port 3132 in the firewall

ufw
sudo ufw deny 3132/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3132 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3132 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3132' -Direction Inbound -Protocol TCP -LocalPort 3132 -Action Block
ufw
sudo ufw deny 3132/udp
iptables
sudo iptables -A INPUT -p udp --dport 3132 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3132 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3132' -Direction Inbound -Protocol UDP -LocalPort 3132 -Action Block

Related ports

3130icpv23131netbookmark3133prism-deploy3134ecp

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