HTTPfy

Port 1954 (abr-api)

IANA assigns port 1954 to abr-api: ABR-API (diskbridge).

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
abr-api TCP ABR-API (diskbridge) - -
abr-api UDP ABR-API (diskbridge) - -

Check what is listening on port 1954

Linux: is anything listening on TCP 1954?
sudo ss -tlnp 'sport = :1954'
Linux: UDP 1954
sudo ss -ulnp 'sport = :1954'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1954
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1954 '
Windows (Command Prompt)
netstat -ano | findstr :1954
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1954 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1954
From Windows
Test-NetConnection HOST -Port 1954
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1954

Block port 1954 in the firewall

ufw
sudo ufw deny 1954/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1954 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1954 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1954' -Direction Inbound -Protocol TCP -LocalPort 1954 -Action Block
ufw
sudo ufw deny 1954/udp
iptables
sudo iptables -A INPUT -p udp --dport 1954 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1954 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1954' -Direction Inbound -Protocol UDP -LocalPort 1954 -Action Block

Related ports

1952mpnjsc1953rapidbase1955abr-secure1956vrtl-vmf-ds

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