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Port 2979 (h263-video)

IANA assigns port 2979 to h263-video: H.263 Video Streaming.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
h263-video TCP H.263 Video Streaming Jauvane C de Olivei -
h263-video UDP H.263 Video Streaming Jauvane C de Olivei -

Check what is listening on port 2979

Linux: is anything listening on TCP 2979?
sudo ss -tlnp 'sport = :2979'
Linux: UDP 2979
sudo ss -ulnp 'sport = :2979'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2979
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2979 '
Windows (Command Prompt)
netstat -ano | findstr :2979
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2979 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2979
From Windows
Test-NetConnection HOST -Port 2979
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2979

Block port 2979 in the firewall

ufw
sudo ufw deny 2979/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2979 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2979 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2979' -Direction Inbound -Protocol TCP -LocalPort 2979 -Action Block
ufw
sudo ufw deny 2979/udp
iptables
sudo iptables -A INPUT -p udp --dport 2979 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2979 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2979' -Direction Inbound -Protocol UDP -LocalPort 2979 -Action Block

Related ports

2977ttc-etap-ns2978ttc-etap-ds2980wimd2981mylxamport

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