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Port 4949 (munin)

IANA assigns port 4949 to munin: Munin Graphing Framework.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
munin TCP Munin Graphing Framework Jimmy Olsen -
munin UDP Munin Graphing Framework Jimmy Olsen -

Registry dates for this port: registered 2010-12-24.

Check what is listening on port 4949

Linux: is anything listening on TCP 4949?
sudo ss -tlnp 'sport = :4949'
Linux: UDP 4949
sudo ss -ulnp 'sport = :4949'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4949
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4949 '
Windows (Command Prompt)
netstat -ano | findstr :4949
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4949 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4949
From Windows
Test-NetConnection HOST -Port 4949
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4949

Block port 4949 in the firewall

ufw
sudo ufw deny 4949/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4949 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4949 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4949' -Direction Inbound -Protocol TCP -LocalPort 4949 -Action Block
ufw
sudo ufw deny 4949/udp
iptables
sudo iptables -A INPUT -p udp --dport 4949 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4949 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4949' -Direction Inbound -Protocol UDP -LocalPort 4949 -Action Block

Related ports

4941eq-office-49414942eq-office-49424950sybasesrvmon4951pwgwims

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