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Port 6122 (bex-webadmin)

IANA assigns port 6122 to bex-webadmin: Backup Express Web Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
bex-webadmin TCP Backup Express Web Server Catalogic Software Inc -
bex-webadmin UDP Backup Express Web Server Catalogic Software Inc -

Registry dates for this port: registered 2008-03-19, last modified 2015-02-04.

Check what is listening on port 6122

Linux: is anything listening on TCP 6122?
sudo ss -tlnp 'sport = :6122'
Linux: UDP 6122
sudo ss -ulnp 'sport = :6122'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6122
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6122 '
Windows (Command Prompt)
netstat -ano | findstr :6122
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6122 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6122
From Windows
Test-NetConnection HOST -Port 6122
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6122

Block port 6122 in the firewall

ufw
sudo ufw deny 6122/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6122 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6122 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6122' -Direction Inbound -Protocol TCP -LocalPort 6122 -Action Block
ufw
sudo ufw deny 6122/udp
iptables
sudo iptables -A INPUT -p udp --dport 6122 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6122 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6122' -Direction Inbound -Protocol UDP -LocalPort 6122 -Action Block

Related ports

6118tipc6121spdy6123backup-express6124pnbs

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