Port 6508 (bdir-pub, bdir_pub)

IANA assigns port 6508 to bdir-pub, bdir_pub: BoKS Dir Server, Public Port IANA assigned this well-formed service name as a replacement for "bdir_pub"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

bdir-pub TCP BoKS Dir Server, Public Port IANA assigned this well-formed service name as a replacement for "bdir_pub". Magnus Nystrom -

bdir_pub TCP BoKS Dir Server, Public Port
This entry is an alias to "bdir-pub". This entry is now historic, not usable for use with many common service discovery mechanisms. Magnus Nystrom -

bdir-pub UDP BoKS Dir Server, Public Port IANA assigned this well-formed service name as a replacement for "bdir_pub". Magnus Nystrom -

bdir_pub UDP BoKS Dir Server, Public Port
This entry is an alias to "bdir-pub". This entry is now historic, not usable for use with many common service discovery mechanisms. Magnus Nystrom -

Check what is listening on port 6508

Linux: is anything listening on TCP 6508?

sudo ss -tlnp 'sport = :6508'

Linux: UDP 6508

sudo ss -ulnp 'sport = :6508'

Linux / macOS: which process owns the port

sudo lsof -nP -i :6508

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':6508 '

Windows (Command Prompt)

netstat -ano | findstr :6508

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6508 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 6508

From Windows

Test-NetConnection HOST -Port 6508

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 6508

Block port 6508 in the firewall

ufw

sudo ufw deny 6508/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 6508 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 6508 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 6508' -Direction Inbound -Protocol TCP -LocalPort 6508 -Action Block

ufw

sudo ufw deny 6508/udp