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Port 6269 (grid-alt)

IANA assigns port 6269 to grid-alt: Grid Authentication Alt.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
grid-alt TCP Grid Authentication Alt Jason Hamilton -
grid-alt UDP Grid Authentication Alt Jason Hamilton -

Registry dates for this port: registered 2006-06.

Check what is listening on port 6269

Linux: is anything listening on TCP 6269?
sudo ss -tlnp 'sport = :6269'
Linux: UDP 6269
sudo ss -ulnp 'sport = :6269'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6269
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6269 '
Windows (Command Prompt)
netstat -ano | findstr :6269
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6269 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6269
From Windows
Test-NetConnection HOST -Port 6269
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6269

Block port 6269 in the firewall

ufw
sudo ufw deny 6269/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6269 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6269 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6269' -Direction Inbound -Protocol TCP -LocalPort 6269 -Action Block
ufw
sudo ufw deny 6269/udp
iptables
sudo iptables -A INPUT -p udp --dport 6269 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6269 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6269' -Direction Inbound -Protocol UDP -LocalPort 6269 -Action Block

Related ports

6267gld6268grid6300bmc-grx6301bmc-ctd-ldap, bmc_ctd_ldap

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