- Answer only the networks that need the service (no open resolvers, relays or reflectors).
- UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
- Disable legacy test services that have no use in production.
Port 4460: Network Time Security Key Establishment
Port 4460 is assigned by IANA to ntske (Network Time Security Key Establishment).
4460
How ntske works
Network servicesThe client sends a request to port 4460 and the ntske service answers.
- Transport
- TCP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- Network services
Is port 4460 dangerous?
We have no specific security note for port 4460. Its risk depends on the program actually listening on it. General advice for network services services:
IANA registry entries for port 4460
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| ntske | 4460 | TCP | Network Time Security Key Establishment | RFC 8915 | 2020-04-07 |
| - | 4460 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 4460, and is it reachable?
Linux
sudo ss -ltnup 'sport = :4460' # process listening on 4460
sudo lsof -nP -i :4460macOS
sudo lsof -nP -i :4460
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4460 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 4460 netstat -ano | findstr :4460
From another machine
nmap -p 4460 -sV <host> nc -zv <host> 4460
Block it in the firewall
sudo ufw deny 4460/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 4460" -Direction Inbound -LocalPort 4460 -Protocol TCP -Action Block # Windows
What is port 4460 used for?
Port 4460 is assigned by IANA to ntske (Network Time Security Key Establishment).
Is port 4460 TCP or UDP?
Port 4460 is registered for TCP.
Is it safe to open port 4460?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Answer only the networks that need the service (no open resolvers, relays or reflectors).
How do I check if port 4460 is open?
On Linux run "ss -ltnup 'sport = :4460'", on macOS "lsof -nP -i :4460", and on Windows "netstat -ano | findstr :4460" to see the local process. From another machine, "nmap -p 4460 <host>" shows whether it is reachable.
Other network services ports
:53 DNS tcp · udp · moderate risk :135 MS RPC tcp · udp · high risk :123 NTP udp · tcp · moderate risk :67 DHCP server udp · tcp · moderate risk :111 rpcbind tcp · udp · high risk :9100 Raw printing (JetDirect) tcp · udp · high risk :631 IPP / CUPS tcp · udp · high risk :5353 mDNS udp · tcp · moderate risk