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Port 5422 (salient-mux)

IANA assigns port 5422 to salient-mux: Salient MUX.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
salient-mux TCP Salient MUX Richard Farnham -
salient-mux UDP Salient MUX Richard Farnham -

Check what is listening on port 5422

Linux: is anything listening on TCP 5422?
sudo ss -tlnp 'sport = :5422'
Linux: UDP 5422
sudo ss -ulnp 'sport = :5422'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5422
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5422 '
Windows (Command Prompt)
netstat -ano | findstr :5422
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5422 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5422
From Windows
Test-NetConnection HOST -Port 5422
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5422

Block port 5422 in the firewall

ufw
sudo ufw deny 5422/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5422 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5422 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5422' -Direction Inbound -Protocol TCP -LocalPort 5422 -Action Block
ufw
sudo ufw deny 5422/udp
iptables
sudo iptables -A INPUT -p udp --dport 5422 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5422 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5422' -Direction Inbound -Protocol UDP -LocalPort 5422 -Action Block

Related ports

5420cylink-c5421netsupport25423virtualuser5424beyond-remote

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