Port 23457 (aequus-alt)

IANA assigns port 23457 to aequus-alt: Aequus Service Mgmt.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

aequus-alt TCP Aequus Service Mgmt James Anson -

Registry dates for this port: registered 2009-02-12.

Linux: is anything listening on TCP 23457?

sudo ss -tlnp 'sport = :23457'

Linux / macOS: which process owns the port

sudo lsof -nP -i :23457

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':23457 '

Windows (Command Prompt)

netstat -ano | findstr :23457

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 23457 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 23457

From Windows

Test-NetConnection HOST -Port 23457

ufw

sudo ufw deny 23457/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 23457 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 23457 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 23457' -Direction Inbound -Protocol TCP -LocalPort 23457 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.