HTTPfy

Port 4036 (wap-push-https)

IANA assigns port 4036 to wap-push-https: WAP Push OTA-HTTP secure.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
wap-push-https TCP WAP Push OTA-HTTP secure Matthieu Lachance -
wap-push-https UDP WAP Push OTA-HTTP secure Matthieu Lachance -

Check what is listening on port 4036

Linux: is anything listening on TCP 4036?
sudo ss -tlnp 'sport = :4036'
Linux: UDP 4036
sudo ss -ulnp 'sport = :4036'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4036
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4036 '
Windows (Command Prompt)
netstat -ano | findstr :4036
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4036 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4036
From Windows
Test-NetConnection HOST -Port 4036
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4036

Block port 4036 in the firewall

ufw
sudo ufw deny 4036/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4036 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4036 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4036' -Direction Inbound -Protocol TCP -LocalPort 4036 -Action Block
ufw
sudo ufw deny 4036/udp
iptables
sudo iptables -A INPUT -p udp --dport 4036 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4036 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4036' -Direction Inbound -Protocol UDP -LocalPort 4036 -Action Block

Related ports

4034ubxd4035wap-push-http4037ravehd4038fazzt-ptp

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