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Port 3445 (monp)

IANA assigns port 3445 to monp: Media Object Network Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
monp TCP Media Object Network Protocol Aethercloud -
monp UDP Media Object Network Protocol Aethercloud -

Registry dates for this port: registered 2002-03, last modified 2019-11-11.

Check what is listening on port 3445

Linux: is anything listening on TCP 3445?
sudo ss -tlnp 'sport = :3445'
Linux: UDP 3445
sudo ss -ulnp 'sport = :3445'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3445
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3445 '
Windows (Command Prompt)
netstat -ano | findstr :3445
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3445 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3445
From Windows
Test-NetConnection HOST -Port 3445
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3445

Block port 3445 in the firewall

ufw
sudo ufw deny 3445/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3445 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3445 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3445' -Direction Inbound -Protocol TCP -LocalPort 3445 -Action Block
ufw
sudo ufw deny 3445/udp
iptables
sudo iptables -A INPUT -p udp --dport 3445 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3445 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3445' -Direction Inbound -Protocol UDP -LocalPort 3445 -Action Block

Related ports

3443ov-nnm-websrv3444denali-server34463comfaxrpc3447directnet

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