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Port 6300 (bmc-grx)

IANA assigns port 6300 to bmc-grx: BMC GRX.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
bmc-grx TCP BMC GRX Portnoy Boxman -
bmc-grx UDP BMC GRX Portnoy Boxman -

Check what is listening on port 6300

Linux: is anything listening on TCP 6300?
sudo ss -tlnp 'sport = :6300'
Linux: UDP 6300
sudo ss -ulnp 'sport = :6300'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6300
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6300 '
Windows (Command Prompt)
netstat -ano | findstr :6300
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6300 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6300
From Windows
Test-NetConnection HOST -Port 6300
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6300

Block port 6300 in the firewall

ufw
sudo ufw deny 6300/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6300 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6300 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6300' -Direction Inbound -Protocol TCP -LocalPort 6300 -Action Block
ufw
sudo ufw deny 6300/udp
iptables
sudo iptables -A INPUT -p udp --dport 6300 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6300 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6300' -Direction Inbound -Protocol UDP -LocalPort 6300 -Action Block

Related ports

6268grid6269grid-alt6301bmc-ctd-ldap, bmc_ctd_ldap6306ufmp

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