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Port 4701 (netxms-mgmt)

IANA assigns port 4701 to netxms-mgmt: NetXMS Management.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netxms-mgmt TCP NetXMS Management - -
netxms-mgmt UDP NetXMS Management - -

Check what is listening on port 4701

Linux: is anything listening on TCP 4701?
sudo ss -tlnp 'sport = :4701'
Linux: UDP 4701
sudo ss -ulnp 'sport = :4701'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4701
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4701 '
Windows (Command Prompt)
netstat -ano | findstr :4701
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4701 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4701
From Windows
Test-NetConnection HOST -Port 4701
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4701

Block port 4701 in the firewall

ufw
sudo ufw deny 4701/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4701 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4701 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4701' -Direction Inbound -Protocol TCP -LocalPort 4701 -Action Block
ufw
sudo ufw deny 4701/udp
iptables
sudo iptables -A INPUT -p udp --dport 4701 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4701 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4701' -Direction Inbound -Protocol UDP -LocalPort 4701 -Action Block

Related ports

4692conspiracy4700netxms-agent4702netxms-sync4703npqes-test

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