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Port 5270 (cartographerxmp)

IANA assigns port 5270 to cartographerxmp: Cartographer XMP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cartographerxmp TCP Cartographer XMP Bobby Krupczak 2 -
cartographerxmp UDP Cartographer XMP Bobby Krupczak 2 -

Registry dates for this port: registered 2008-04-03, last modified 2011-08-31.

Check what is listening on port 5270

Linux: is anything listening on TCP 5270?
sudo ss -tlnp 'sport = :5270'
Linux: UDP 5270
sudo ss -ulnp 'sport = :5270'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5270
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5270 '
Windows (Command Prompt)
netstat -ano | findstr :5270
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5270 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5270
From Windows
Test-NetConnection HOST -Port 5270
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5270

Block port 5270 in the firewall

ufw
sudo ufw deny 5270/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5270 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5270 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5270' -Direction Inbound -Protocol TCP -LocalPort 5270 -Action Block
ufw
sudo ufw deny 5270/udp
iptables
sudo iptables -A INPUT -p udp --dport 5270 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5270 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5270' -Direction Inbound -Protocol UDP -LocalPort 5270 -Action Block

Related ports

52653com-njack-25269XMPP server-to-server5271cuelink, cuelink-disc5272pk

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