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Port 2093 (nbx-cc)

IANA assigns port 2093 to nbx-cc: NBX CC.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
nbx-cc TCP NBX CC - -
nbx-cc UDP NBX CC - -

Check what is listening on port 2093

Linux: is anything listening on TCP 2093?
sudo ss -tlnp 'sport = :2093'
Linux: UDP 2093
sudo ss -ulnp 'sport = :2093'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2093
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2093 '
Windows (Command Prompt)
netstat -ano | findstr :2093
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2093 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2093
From Windows
Test-NetConnection HOST -Port 2093
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2093

Block port 2093 in the firewall

ufw
sudo ufw deny 2093/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2093 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2093 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2093' -Direction Inbound -Protocol TCP -LocalPort 2093 -Action Block
ufw
sudo ufw deny 2093/udp
iptables
sudo iptables -A INPUT -p udp --dport 2093 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2093 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2093' -Direction Inbound -Protocol UDP -LocalPort 2093 -Action Block

Related ports

2091prp2092descent32094nbx-au2095nbx-ser

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