Port 9102 (bacula-fd)

IANA assigns port 9102 to bacula-fd: Bacula File Daemon.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

bacula-fd TCP Bacula File Daemon Kern Sibbald -

bacula-fd UDP Bacula File Daemon Kern Sibbald -

Registry dates for this port: registered 2002-01.

Linux: is anything listening on TCP 9102?

sudo ss -tlnp 'sport = :9102'

Linux: UDP 9102

sudo ss -ulnp 'sport = :9102'

Linux / macOS: which process owns the port

sudo lsof -nP -i :9102

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':9102 '

Windows (Command Prompt)

netstat -ano | findstr :9102

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9102 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 9102

From Windows

Test-NetConnection HOST -Port 9102

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

nc -vzu -w 5 HOST 9102

ufw

sudo ufw deny 9102/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 9102 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 9102 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 9102' -Direction Inbound -Protocol TCP -LocalPort 9102 -Action Block

ufw

sudo ufw deny 9102/udp

iptables

sudo iptables -A INPUT -p udp --dport 9102 -j DROP

nftables

sudo nft add rule inet filter input udp dport 9102 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 9102' -Direction Inbound -Protocol UDP -LocalPort 9102 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.