HTTPfy

Port 5633 (beorl)

IANA assigns port 5633 to beorl: BE Operations Request Listener.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
beorl TCP BE Operations Request Listener Chirag Desai -
beorl UDP BE Operations Request Listener Chirag Desai -

Registry dates for this port: registered 2006-02.

Check what is listening on port 5633

Linux: is anything listening on TCP 5633?
sudo ss -tlnp 'sport = :5633'
Linux: UDP 5633
sudo ss -ulnp 'sport = :5633'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5633
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5633 '
Windows (Command Prompt)
netstat -ano | findstr :5633
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5633 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5633
From Windows
Test-NetConnection HOST -Port 5633
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5633

Block port 5633 in the firewall

ufw
sudo ufw deny 5633/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5633 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5633 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5633' -Direction Inbound -Protocol TCP -LocalPort 5633 -Action Block
ufw
sudo ufw deny 5633/udp
iptables
sudo iptables -A INPUT -p udp --dport 5633 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5633 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5633' -Direction Inbound -Protocol UDP -LocalPort 5633 -Action Block

Related ports

5631pcanywheredata5632pcanywherestat5634xprtld5635sfmsso

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