Port 1879 (nettgain-nms)

IANA assigns port 1879 to nettgain-nms: NettGain NMS.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

nettgain-nms TCP NettGain NMS Dr Yair Shapira -

nettgain-nms UDP NettGain NMS Dr Yair Shapira -

Linux: is anything listening on TCP 1879?

sudo ss -tlnp 'sport = :1879'

Linux: UDP 1879

sudo ss -ulnp 'sport = :1879'

Linux / macOS: which process owns the port

sudo lsof -nP -i :1879

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':1879 '

Windows (Command Prompt)

netstat -ano | findstr :1879

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1879 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 1879

From Windows

Test-NetConnection HOST -Port 1879

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 1879

ufw

sudo ufw deny 1879/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 1879 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 1879 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 1879' -Direction Inbound -Protocol TCP -LocalPort 1879 -Action Block

ufw

sudo ufw deny 1879/udp

iptables

sudo iptables -A INPUT -p udp --dport 1879 -j DROP

nftables

sudo nft add rule inet filter input udp dport 1879 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 1879' -Direction Inbound -Protocol UDP -LocalPort 1879 -Action Block

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