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Port 2718 (pn-requester2)

IANA assigns port 2718 to pn-requester2: PN REQUESTER 2.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pn-requester2 TCP PN REQUESTER 2 Portnoy Boxman -
pn-requester2 UDP PN REQUESTER 2 Portnoy Boxman -

Check what is listening on port 2718

Linux: is anything listening on TCP 2718?
sudo ss -tlnp 'sport = :2718'
Linux: UDP 2718
sudo ss -ulnp 'sport = :2718'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2718
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2718 '
Windows (Command Prompt)
netstat -ano | findstr :2718
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2718 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2718
From Windows
Test-NetConnection HOST -Port 2718
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2718

Block port 2718 in the firewall

ufw
sudo ufw deny 2718/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2718 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2718 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2718' -Direction Inbound -Protocol TCP -LocalPort 2718 -Action Block
ufw
sudo ufw deny 2718/udp
iptables
sudo iptables -A INPUT -p udp --dport 2718 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2718 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2718' -Direction Inbound -Protocol UDP -LocalPort 2718 -Action Block

Related ports

2716inova-ip-disco2717pn-requester2719scan-change2720wkars

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