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Port 3004 (csoftragent)

IANA assigns port 3004 to csoftragent: Csoft Agent.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
csoftragent TCP Csoft Agent Nedelcho Stanev 2 -
csoftragent UDP Csoft Agent Nedelcho Stanev 2 -

Check what is listening on port 3004

Linux: is anything listening on TCP 3004?
sudo ss -tlnp 'sport = :3004'
Linux: UDP 3004
sudo ss -ulnp 'sport = :3004'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3004
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3004 '
Windows (Command Prompt)
netstat -ano | findstr :3004
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3004 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3004
From Windows
Test-NetConnection HOST -Port 3004
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3004

Block port 3004 in the firewall

ufw
sudo ufw deny 3004/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3004 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3004 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3004' -Direction Inbound -Protocol TCP -LocalPort 3004 -Action Block
ufw
sudo ufw deny 3004/udp
iptables
sudo iptables -A INPUT -p udp --dport 3004 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3004 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3004' -Direction Inbound -Protocol UDP -LocalPort 3004 -Action Block

Related ports

3002exlm-agent, remoteware-srv3003cgms3005geniuslm3006ii-admin

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