HTTPfy

Port 1868 (viziblebrowser)

IANA assigns port 1868 to viziblebrowser: VizibleBrowser.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
viziblebrowser TCP VizibleBrowser Jimmy Talbot -
viziblebrowser UDP VizibleBrowser Jimmy Talbot -

Check what is listening on port 1868

Linux: is anything listening on TCP 1868?
sudo ss -tlnp 'sport = :1868'
Linux: UDP 1868
sudo ss -ulnp 'sport = :1868'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1868
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1868 '
Windows (Command Prompt)
netstat -ano | findstr :1868
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1868 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1868
From Windows
Test-NetConnection HOST -Port 1868
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1868

Block port 1868 in the firewall

ufw
sudo ufw deny 1868/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1868 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1868 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1868' -Direction Inbound -Protocol TCP -LocalPort 1868 -Action Block
ufw
sudo ufw deny 1868/udp
iptables
sudo iptables -A INPUT -p udp --dport 1868 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1868 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1868' -Direction Inbound -Protocol UDP -LocalPort 1868 -Action Block

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