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Port 2579 (mpfoncl)

IANA assigns port 2579 to mpfoncl.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mpfoncl TCP mpfoncl Itaru Kimura -
mpfoncl UDP mpfoncl Itaru Kimura -

Check what is listening on port 2579

Linux: is anything listening on TCP 2579?
sudo ss -tlnp 'sport = :2579'
Linux: UDP 2579
sudo ss -ulnp 'sport = :2579'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2579
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2579 '
Windows (Command Prompt)
netstat -ano | findstr :2579
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2579 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2579
From Windows
Test-NetConnection HOST -Port 2579
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2579

Block port 2579 in the firewall

ufw
sudo ufw deny 2579/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2579 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2579 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2579' -Direction Inbound -Protocol TCP -LocalPort 2579 -Action Block
ufw
sudo ufw deny 2579/udp
iptables
sudo iptables -A INPUT -p udp --dport 2579 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2579 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2579' -Direction Inbound -Protocol UDP -LocalPort 2579 -Action Block

Related ports

2577scipticslsrvr2578rvs-isdn-dcp2580tributary2581argis-te

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