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Port 4745 (fmp)

IANA assigns port 4745 to fmp: Funambol Mobile Push.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
fmp TCP Funambol Mobile Push Andrea Gazzaniga -
fmp UDP Funambol Mobile Push Andrea Gazzaniga -

Registry dates for this port: registered 2007-01.

Check what is listening on port 4745

Linux: is anything listening on TCP 4745?
sudo ss -tlnp 'sport = :4745'
Linux: UDP 4745
sudo ss -ulnp 'sport = :4745'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4745
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4745 '
Windows (Command Prompt)
netstat -ano | findstr :4745
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4745 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4745
From Windows
Test-NetConnection HOST -Port 4745
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4745

Block port 4745 in the firewall

ufw
sudo ufw deny 4745/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4745 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4745 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4745' -Direction Inbound -Protocol TCP -LocalPort 4745 -Action Block
ufw
sudo ufw deny 4745/udp
iptables
sudo iptables -A INPUT -p udp --dport 4745 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4745 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4745' -Direction Inbound -Protocol UDP -LocalPort 4745 -Action Block

Related ports

4743openhpid4744ifsp4746intelliadm-disc4747buschtrommel

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