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Port 2433 (codasrv-se)

IANA assigns port 2433 to codasrv-se.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
codasrv-se TCP codasrv-se Robert Watson -
codasrv-se UDP codasrv-se Robert Watson -

Check what is listening on port 2433

Linux: is anything listening on TCP 2433?
sudo ss -tlnp 'sport = :2433'
Linux: UDP 2433
sudo ss -ulnp 'sport = :2433'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2433
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2433 '
Windows (Command Prompt)
netstat -ano | findstr :2433
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2433 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2433
From Windows
Test-NetConnection HOST -Port 2433
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2433

Block port 2433 in the firewall

ufw
sudo ufw deny 2433/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2433 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2433 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2433' -Direction Inbound -Protocol TCP -LocalPort 2433 -Action Block
ufw
sudo ufw deny 2433/udp
iptables
sudo iptables -A INPUT -p udp --dport 2433 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2433 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2433' -Direction Inbound -Protocol UDP -LocalPort 2433 -Action Block

Related ports

2431venus-se2432codasrv2434pxc-epmap2435optilogic

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