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Port 4076 (seraph)

IANA assigns port 4076 to seraph: Seraph DCS.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
seraph TCP Seraph DCS Jason Spence -
seraph UDP Seraph DCS Jason Spence -

Registry dates for this port: registered 2008-01-22.

Check what is listening on port 4076

Linux: is anything listening on TCP 4076?
sudo ss -tlnp 'sport = :4076'
Linux: UDP 4076
sudo ss -ulnp 'sport = :4076'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4076
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4076 '
Windows (Command Prompt)
netstat -ano | findstr :4076
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4076 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4076
From Windows
Test-NetConnection HOST -Port 4076
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4076

Block port 4076 in the firewall

ufw
sudo ufw deny 4076/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4076 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4076 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4076' -Direction Inbound -Protocol TCP -LocalPort 4076 -Action Block
ufw
sudo ufw deny 4076/udp
iptables
sudo iptables -A INPUT -p udp --dport 4076 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4076 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4076' -Direction Inbound -Protocol UDP -LocalPort 4076 -Action Block

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