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Port 2187 (ssmc, ssmd)

IANA assigns port 2187 to ssmc, ssmd: Sepehr System Management Control.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ssmc TCP Sepehr System Management Control - -
ssmd UDP Sepehr System Management Data Shahriar Pourazin -

Registry dates for this port: registered 2008-12-02.

Check what is listening on port 2187

Linux: is anything listening on TCP 2187?
sudo ss -tlnp 'sport = :2187'
Linux: UDP 2187
sudo ss -ulnp 'sport = :2187'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2187
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2187 '
Windows (Command Prompt)
netstat -ano | findstr :2187
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2187 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2187
From Windows
Test-NetConnection HOST -Port 2187
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2187

Block port 2187 in the firewall

ufw
sudo ufw deny 2187/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2187 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2187 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2187' -Direction Inbound -Protocol TCP -LocalPort 2187 -Action Block
ufw
sudo ufw deny 2187/udp
iptables
sudo iptables -A INPUT -p udp --dport 2187 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2187 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2187' -Direction Inbound -Protocol UDP -LocalPort 2187 -Action Block

Related ports

2185onbase-dds2186gtaua2188radware-rpm2189radware-rpm-s

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.