Port 6122 BEX-WEBADMIN
Port 6122 is the IANA-assigned bex-webadmin port for Backup Express Web Server (TCP / UDP).
What is port 6122 used for?
Port 6122 is assigned to bex-webadmin and uses TCP / UDP. The IANA registry describes the service as “Backup Express Web Server”. It sits in the registered range, the block used by databases, application servers and developer tooling. Port conflicts here are common when several local services start at once.
Ports are the transport-layer address a service listens on. A client that wants to reach bex-webadmin connects to port 6122. A TCP connection is refused when nothing is listening, while a UDP request simply goes unanswered. That is why a port conflict appears whenever two processes try to bind the same number.
Use the commands below to confirm whether port 6122 is actually in use before you change firewall rules. Blocking the port stops new inbound traffic at the firewall, but it does not stop a local process from listening, and it does not remove the service from the machine.
Source: IANA Service Name and Transport Protocol Port Number Registry. Registered assignee: [Catalogic_Software_Inc].
Check and block port 6122
Copy-ready commands for the protocols assigned to this port. Run the check first, then block only what should not be reachable.
Check on Linux
sudo ss -tlpn 'sport = :6122'
sudo ss -ulpn 'sport = :6122'Check on Windows
Get-NetTCPConnection -LocalPort 6122 -State Listen -ErrorAction SilentlyContinue
Get-NetUDPEndpoint -LocalPort 6122 -ErrorAction SilentlyContinueBlock with UFW
sudo ufw deny 6122/tcp
sudo ufw deny 6122/udpBlock with iptables
sudo iptables -A INPUT -p tcp --dport 6122 -j DROP
sudo iptables -A INPUT -p udp --dport 6122 -j DROPThese commands are examples for a typical host. Check the listener before you change firewall rules, and persist iptables rules with iptables-save or netfilter-persistent. On Windows, use Windows Defender Firewall or New-NetFirewallRule for persistent blocks. The iptables rules here cover IPv4; mirror them with ip6tables if IPv6 is enabled.
Is port 6122 safe to expose?
This port is not on our curated list of services with a widely exploited profile. Exposure is only safe when the listening service is intended, patched and protected by a firewall. Keep the listening service patched and remove it if unused. A default-deny firewall policy with explicit allow rules is still the safest baseline.
Where port 6122 is usually used
Most traffic on port 6122 falls into these scenarios. The demo below is a safe way to confirm the listener before you change anything.
- Serving a website, API or reverse-proxy traffic that clients reach on port 6122.
- Load-balancer and uptime checks probing the port before routing requests.
- Local development, where a browser or curl calls the service on localhost:6122.
Send a test request
Start a local web server, then ask the port for response headers. Replace 127.0.0.1 with the host you are testing.
curl -I http://127.0.0.1:6122Common problems with port 6122
Connection refused or timed out
Refused usually means the host is reachable but nothing is listening on port 6122. A timeout more often means a firewall drop, a wrong host or a service bound to a different interface.
Port already in use
Find the process holding the port with sudo ss -tlpn 'sport = :6122' or sudo lsof -i :6122. Stop that process or configure it to bind another port; killing it without identifying it can take down a production service.
Firewall rule did not survive a reboot
UFW and Windows Firewall keep rules across restarts. Raw iptables rules do not: save them with iptables-save or the netfilter-persistent package, and re-apply after upgrades that reset the ruleset.
The port is blocked but still reachable
A firewall rule filters inbound traffic; it does not close the listener. Confirm with the check command above and bind the service to 127.0.0.1 when only local clients need it.
Port 6122 at a glance
| Port number | 6122 |
|---|---|
| Service name | bex-webadmin |
| Transport protocol | TCP / UDP |
| Category | Web and HTTP |
| Range | Registered port (1024–10000) |
| Risk level | Standard/Low |
| Registered assignee | [Catalogic_Software_Inc] |
| Registry description | Backup Express Web Server |
| Source | IANA Service Name and Transport Protocol Port Number Registry |
Frequently asked questions
What is port 6122 used for?
Port 6122 (BEX-WEBADMIN) uses TCP / UDP. Backup Express Web Server.
How do I check if port 6122 is open?
On Linux run `sudo ss -tlpn 'sport = :6122'` and `sudo ss -ulpn 'sport = :6122'`. On Windows run `Get-NetTCPConnection -LocalPort 6122 -State Listen -ErrorAction SilentlyContinue` and `Get-NetUDPEndpoint -LocalPort 6122 -ErrorAction SilentlyContinue` in PowerShell. If the port is open, the output shows a process listening on port 6122; empty output usually means nothing is bound to it.
How do I block port 6122?
With UFW run `sudo ufw deny 6122/tcp` and `sudo ufw deny 6122/udp`. With iptables run `sudo iptables -A INPUT -p tcp --dport 6122 -j DROP` and `sudo iptables -A INPUT -p udp --dport 6122 -j DROP`. Persist the iptables rules with your distribution's netfilter-persistent or iptables-save tooling so they survive a reboot.
Is port 6122 safe to expose?
This port is not on our curated list of services with a widely exploited profile. Exposure is only safe when the listening service is intended, patched and protected by a firewall. Nevertheless, keep the listening service patched and remove it if unused. A default-deny firewall policy with explicit allow rules is still the safest baseline.
Related ports
- Port 6118 · tipcTransparent Inter Process Communication
- Port 6124 · pnbsPhlexible Network Backup Service
- Port 5986 · wsmansWBEM WS-Management HTTP over TLS/SSL
- Port 6480 · sun-sr-httpService Registry Default HTTP Domain
- Port 5841 · shiprush-d-chZ-firm ShipRush interface for web access and bidirectional data
- Port 8080 · http-altHTTP Alternate (see port 80)
Primary data: IANA Service Name and Transport Protocol Port Number Registry.
Last reviewed 2026-10-30 · Methodology · About · Privacy