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Port 4442 (saris)

IANA assigns port 4442 to saris: Saris.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
saris TCP Saris - -
saris UDP Saris - -

Check what is listening on port 4442

Linux: is anything listening on TCP 4442?
sudo ss -tlnp 'sport = :4442'
Linux: UDP 4442
sudo ss -ulnp 'sport = :4442'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4442
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4442 '
Windows (Command Prompt)
netstat -ano | findstr :4442
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4442 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4442
From Windows
Test-NetConnection HOST -Port 4442
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4442

Block port 4442 in the firewall

ufw
sudo ufw deny 4442/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4442 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4442 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4442' -Direction Inbound -Protocol TCP -LocalPort 4442 -Action Block
ufw
sudo ufw deny 4442/udp
iptables
sudo iptables -A INPUT -p udp --dport 4442 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4442 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4442' -Direction Inbound -Protocol UDP -LocalPort 4442 -Action Block

Related ports

4433vop4441netblox4443HTTPS alternate (4443)4444Metasploit default / krb524

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