Port 2945 (h248-binary)

IANA assigns port 2945 to h248-binary: H248 Binary.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

h248-binary TCP H248 Binary Tom Taylor 2 -

h248-binary UDP H248 Binary Tom Taylor 2 -

h248-binary SCTP Megaco/H.248 binary Tom Taylor 3 -

Registry dates for this port: registered 2006-09.

Linux: is anything listening on TCP 2945?

sudo ss -tlnp 'sport = :2945'

Linux: UDP 2945

sudo ss -ulnp 'sport = :2945'

Linux / macOS: which process owns the port

sudo lsof -nP -i :2945

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':2945 '

Windows (Command Prompt)

netstat -ano | findstr :2945

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2945 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 2945

From Windows

Test-NetConnection HOST -Port 2945

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

nc -vzu -w 5 HOST 2945

ufw

sudo ufw deny 2945/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 2945 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 2945 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 2945' -Direction Inbound -Protocol TCP -LocalPort 2945 -Action Block

ufw

sudo ufw deny 2945/udp

iptables

sudo iptables -A INPUT -p udp --dport 2945 -j DROP

nftables

sudo nft add rule inet filter input udp dport 2945 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 2945' -Direction Inbound -Protocol UDP -LocalPort 2945 -Action Block

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