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Port 2820 (univision)

IANA assigns port 2820 to univision: UniVision.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
univision TCP UniVision Keith Ansell -
univision UDP UniVision Keith Ansell -

Check what is listening on port 2820

Linux: is anything listening on TCP 2820?
sudo ss -tlnp 'sport = :2820'
Linux: UDP 2820
sudo ss -ulnp 'sport = :2820'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2820
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2820 '
Windows (Command Prompt)
netstat -ano | findstr :2820
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2820 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2820
From Windows
Test-NetConnection HOST -Port 2820
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2820

Block port 2820 in the firewall

ufw
sudo ufw deny 2820/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2820 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2820 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2820' -Direction Inbound -Protocol TCP -LocalPort 2820 -Action Block
ufw
sudo ufw deny 2820/udp
iptables
sudo iptables -A INPUT -p udp --dport 2820 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2820 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2820' -Direction Inbound -Protocol UDP -LocalPort 2820 -Action Block

Related ports

2818rmlnk2819fc-faultnotify2821vrts-at-port2822ka0wuc

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