HTTPfy

Port 5282 (transmit-port)

IANA assigns port 5282 to transmit-port: Marimba Transmitter Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
transmit-port TCP Marimba Transmitter Port Johan Eriksson -
transmit-port UDP Marimba Transmitter Port Johan Eriksson -

Registry dates for this port: registered 2002-04.

Check what is listening on port 5282

Linux: is anything listening on TCP 5282?
sudo ss -tlnp 'sport = :5282'
Linux: UDP 5282
sudo ss -ulnp 'sport = :5282'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5282
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5282 '
Windows (Command Prompt)
netstat -ano | findstr :5282
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5282 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5282
From Windows
Test-NetConnection HOST -Port 5282
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5282

Block port 5282 in the firewall

ufw
sudo ufw deny 5282/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5282 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5282 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5282' -Direction Inbound -Protocol TCP -LocalPort 5282 -Action Block
ufw
sudo ufw deny 5282/udp
iptables
sudo iptables -A INPUT -p udp --dport 5282 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5282 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5282' -Direction Inbound -Protocol UDP -LocalPort 5282 -Action Block

Related ports

5280XMPP BOSH / HTTP5281undo-lm5298presence5299nlg-data

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