Port 45000 (asmp, asmp-mon)

IANA assigns port 45000 to asmp, asmp-mon: Nuance AutoStore Status Monitoring Protocol (data transfer).

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

asmp TCP Nuance AutoStore Status Monitoring Protocol (data transfer) Nuance Communications Inc4 -

asmp-mon UDP Nuance AutoStore Status Monitoring Protocol (device monitoring) Nuance Communications Inc4 -

Registry dates for this port: registered 2011-09-01, last modified 2017-04-26.

Linux: is anything listening on TCP 45000?

sudo ss -tlnp 'sport = :45000'

Linux: UDP 45000

sudo ss -ulnp 'sport = :45000'

Linux / macOS: which process owns the port

sudo lsof -nP -i :45000

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':45000 '

Windows (Command Prompt)

netstat -ano | findstr :45000

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 45000 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 45000

From Windows

Test-NetConnection HOST -Port 45000

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 45000

ufw

sudo ufw deny 45000/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 45000 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 45000 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 45000' -Direction Inbound -Protocol TCP -LocalPort 45000 -Action Block

ufw

sudo ufw deny 45000/udp

iptables

sudo iptables -A INPUT -p udp --dport 45000 -j DROP

nftables

sudo nft add rule inet filter input udp dport 45000 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 45000' -Direction Inbound -Protocol UDP -LocalPort 45000 -Action Block

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