- Close the port if nothing on the host needs it.
- Identify the process that listens on it (commands below) before opening it in a firewall.
- Expose a service only to the networks that use it.
Port 45045: Remote application control protocol
Port 45045 is assigned by IANA to synctest (Remote application control protocol).
45045
How synctest works
Other servicesThe client sends a request to port 45045 and the synctest 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
- Other services
Is port 45045 dangerous?
We have no specific security note for port 45045. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 45045
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| synctest | 45045 | TCP | Remote application control protocol | - | 2013-04-08 |
| - | 45045 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 45045, and is it reachable?
Linux
sudo ss -ltnup 'sport = :45045' # process listening on 45045
sudo lsof -nP -i :45045macOS
sudo lsof -nP -i :45045
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 45045 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 45045 netstat -ano | findstr :45045
From another machine
nmap -p 45045 -sV <host> nc -zv <host> 45045
Block it in the firewall
sudo ufw deny 45045/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 45045" -Direction Inbound -LocalPort 45045 -Protocol TCP -Action Block # Windows
What is port 45045 used for?
Port 45045 is assigned by IANA to synctest (Remote application control protocol).
Is port 45045 TCP or UDP?
Port 45045 is registered for TCP.
Is it safe to open port 45045?
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. Close the port if nothing on the host needs it.
How do I check if port 45045 is open?
On Linux run "ss -ltnup 'sport = :45045'", on macOS "lsof -nP -i :45045", and on Windows "netstat -ano | findstr :45045" to see the local process. From another machine, "nmap -p 45045 <host>" shows whether it is reachable.
Other other services ports
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp