Port 4140 (cedros-fds, cedros_fds)

IANA assigns port 4140 to cedros-fds, cedros_fds: Cedros Fraud Detection System IANA assigned this well-formed service name as a replacement for "cedros_fds"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

cedros-fds TCP Cedros Fraud Detection System IANA assigned this well-formed service name as a replacement for "cedros_fds". Markus Michels 3 -

cedros_fds TCP Cedros Fraud Detection System
This entry is an alias to "cedros-fds". This entry is now historic, not usable for use with many common service discovery mechanisms. Markus Michels 3 -

cedros-fds UDP Cedros Fraud Detection System IANA assigned this well-formed service name as a replacement for "cedros_fds". Markus Michels 3 -

cedros_fds UDP Cedros Fraud Detection System
This entry is an alias to "cedros-fds". This entry is now historic, not usable for use with many common service discovery mechanisms. Markus Michels 3 -

Registry dates for this port: registered 2006-10.

Check what is listening on port 4140

Linux: is anything listening on TCP 4140?

sudo ss -tlnp 'sport = :4140'

Linux: UDP 4140

sudo ss -ulnp 'sport = :4140'

Linux / macOS: which process owns the port

sudo lsof -nP -i :4140

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':4140 '

Windows (Command Prompt)

netstat -ano | findstr :4140

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4140 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 4140

From Windows

Test-NetConnection HOST -Port 4140

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

nc -vzu -w 5 HOST 4140

Block port 4140 in the firewall

ufw

sudo ufw deny 4140/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 4140 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 4140 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 4140' -Direction Inbound -Protocol TCP -LocalPort 4140 -Action Block

ufw

sudo ufw deny 4140/udp