HTTPfy

Port 2996 (vsixml)

IANA assigns port 2996 to vsixml.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
vsixml TCP vsixml Rob Juergens -
vsixml UDP vsixml Rob Juergens -

Check what is listening on port 2996

Linux: is anything listening on TCP 2996?
sudo ss -tlnp 'sport = :2996'
Linux: UDP 2996
sudo ss -ulnp 'sport = :2996'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2996
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2996 '
Windows (Command Prompt)
netstat -ano | findstr :2996
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2996 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2996
From Windows
Test-NetConnection HOST -Port 2996
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2996

Block port 2996 in the firewall

ufw
sudo ufw deny 2996/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2996 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2996 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2996' -Direction Inbound -Protocol TCP -LocalPort 2996 -Action Block
ufw
sudo ufw deny 2996/udp
iptables
sudo iptables -A INPUT -p udp --dport 2996 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2996 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2996' -Direction Inbound -Protocol UDP -LocalPort 2996 -Action Block

Related ports

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