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Port 8023 (arca-api)

IANA assigns port 8023 to arca-api: ARCATrust vault API.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
arca-api TCP ARCATrust vault API ARCATrust SA -
arca-api UDP ARCATrust vault API ARCATrust SA -

Registry dates for this port: registered 2018-07-05.

Check what is listening on port 8023

Linux: is anything listening on TCP 8023?
sudo ss -tlnp 'sport = :8023'
Linux: UDP 8023
sudo ss -ulnp 'sport = :8023'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8023
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8023 '
Windows (Command Prompt)
netstat -ano | findstr :8023
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8023 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8023
From Windows
Test-NetConnection HOST -Port 8023
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8023

Block port 8023 in the firewall

ufw
sudo ufw deny 8023/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8023 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8023 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8023' -Direction Inbound -Protocol TCP -LocalPort 8023 -Action Block
ufw
sudo ufw deny 8023/udp
iptables
sudo iptables -A INPUT -p udp --dport 8023 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8023 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8023' -Direction Inbound -Protocol UDP -LocalPort 8023 -Action Block

Related ports

8021intu-ec-client8022oa-system8024gaap8025ca-audit-da

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