Port 2340 (wrs-registry, wrs_registry)

IANA assigns port 2340 to wrs-registry, wrs_registry: WRS Registry IANA assigned this well-formed service name as a replacement for "wrs_registry"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

wrs-registry TCP WRS Registry IANA assigned this well-formed service name as a replacement for "wrs_registry". Christophe Cleraux -

wrs_registry TCP WRS Registry
This entry is an alias to "wrs-registry". This entry is now historic, not usable for use with many common service discovery mechanisms. Christophe Cleraux -

wrs-registry UDP WRS Registry IANA assigned this well-formed service name as a replacement for "wrs_registry". Christophe Cleraux -

wrs_registry UDP WRS Registry
This entry is an alias to "wrs-registry". This entry is now historic, not usable for use with many common service discovery mechanisms. Christophe Cleraux -

Check what is listening on port 2340

Linux: is anything listening on TCP 2340?

sudo ss -tlnp 'sport = :2340'

Linux: UDP 2340

sudo ss -ulnp 'sport = :2340'

Linux / macOS: which process owns the port

sudo lsof -nP -i :2340

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':2340 '

Windows (Command Prompt)

netstat -ano | findstr :2340

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2340 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 2340

From Windows

Test-NetConnection HOST -Port 2340

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

nc -vzu -w 5 HOST 2340

Block port 2340 in the firewall

ufw

sudo ufw deny 2340/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 2340 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 2340 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 2340' -Direction Inbound -Protocol TCP -LocalPort 2340 -Action Block

ufw

sudo ufw deny 2340/udp