- Patch VPN gateways quickly: they are a top initial access target.
- Use certificates or MFA rather than shared secrets.
- Investigate unexpected tunnels and proxies: they are also attacker tools.
Port 22343: CompactIS Secure Tunnel
Port 22343 is assigned by IANA to cis-secure (CompactIS Secure Tunnel).
22343
How cis-secure works
VPN, tunnels & proxiesTraffic is wrapped in a tunnel between the two ends, so the network in between only sees the tunnel.
- Transport
- TCP · UDP
- 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
- VPN, tunnels & proxies
Is port 22343 dangerous?
We have no specific security note for port 22343. Its risk depends on the program actually listening on it. General advice for vpn, tunnels & proxies services:
IANA registry entries for port 22343
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| cis-secure | 22343 | TCP, UDP | CompactIS Secure Tunnel | - | 2007-08-16 |
// source: IANA service name and port number registry
Which program uses port 22343, and is it reachable?
Linux
sudo ss -ltnup 'sport = :22343' # process listening on 22343
sudo lsof -nP -i :22343macOS
sudo lsof -nP -i :22343
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 22343 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 22343 netstat -ano | findstr :22343
From another machine
nmap -p 22343 -sV <host> sudo nmap -sU -p 22343 <host> nc -zv <host> 22343
Block it in the firewall
sudo ufw deny 22343/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 22343" -Direction Inbound -LocalPort 22343 -Protocol TCP -Action Block # Windows
What is port 22343 used for?
Port 22343 is assigned by IANA to cis-secure (CompactIS Secure Tunnel).
Is port 22343 TCP or UDP?
Port 22343 is registered for TCP and UDP.
Is it safe to open port 22343?
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. Patch VPN gateways quickly: they are a top initial access target.
How do I check if port 22343 is open?
On Linux run "ss -ltnup 'sport = :22343'", on macOS "lsof -nP -i :22343", and on Windows "netstat -ano | findstr :22343" to see the local process. From another machine, "nmap -p 22343 <host>" shows whether it is reachable.