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Port 9283 (callwaveiam)

IANA assigns port 9283 to callwaveiam: CallWaveIAM.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
callwaveiam TCP CallWaveIAM Colin Kelley -
callwaveiam UDP CallWaveIAM Colin Kelley -

Check what is listening on port 9283

Linux: is anything listening on TCP 9283?
sudo ss -tlnp 'sport = :9283'
Linux: UDP 9283
sudo ss -ulnp 'sport = :9283'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9283
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9283 '
Windows (Command Prompt)
netstat -ano | findstr :9283
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9283 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9283
From Windows
Test-NetConnection HOST -Port 9283
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 9283

Block port 9283 in the firewall

ufw
sudo ufw deny 9283/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9283 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9283 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9283' -Direction Inbound -Protocol TCP -LocalPort 9283 -Action Block
ufw
sudo ufw deny 9283/udp
iptables
sudo iptables -A INPUT -p udp --dport 9283 -j DROP
nftables
sudo nft add rule inet filter input udp dport 9283 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 9283' -Direction Inbound -Protocol UDP -LocalPort 9283 -Action Block

Related ports

9281swtp-port19282swtp-port29284visd9285n2h2server

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