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Port 7846 (apc-7846)

IANA assigns port 7846 to apc-7846: APC 7846.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
apc-7846 TCP APC 7846 American Power Conve -
apc-7846 UDP APC 7846 American Power Conve -

Check what is listening on port 7846

Linux: is anything listening on TCP 7846?
sudo ss -tlnp 'sport = :7846'
Linux: UDP 7846
sudo ss -ulnp 'sport = :7846'
Linux / macOS: which process owns the port
sudo lsof -nP -i :7846
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':7846 '
Windows (Command Prompt)
netstat -ano | findstr :7846
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7846 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 7846
From Windows
Test-NetConnection HOST -Port 7846
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 7846

Block port 7846 in the firewall

ufw
sudo ufw deny 7846/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 7846 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 7846 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 7846' -Direction Inbound -Protocol TCP -LocalPort 7846 -Action Block
ufw
sudo ufw deny 7846/udp
iptables
sudo iptables -A INPUT -p udp --dport 7846 -j DROP
nftables
sudo nft add rule inet filter input udp dport 7846 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 7846' -Direction Inbound -Protocol UDP -LocalPort 7846 -Action Block

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