HTTPfy

Port 4035 (wap-push-http)

IANA assigns port 4035 to wap-push-http: WAP Push OTA-HTTP port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
wap-push-http TCP WAP Push OTA-HTTP port - -
wap-push-http UDP WAP Push OTA-HTTP port - -

Check what is listening on port 4035

Linux: is anything listening on TCP 4035?
sudo ss -tlnp 'sport = :4035'
Linux: UDP 4035
sudo ss -ulnp 'sport = :4035'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4035
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4035 '
Windows (Command Prompt)
netstat -ano | findstr :4035
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4035 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4035
From Windows
Test-NetConnection HOST -Port 4035
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4035

Block port 4035 in the firewall

ufw
sudo ufw deny 4035/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4035 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4035 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4035' -Direction Inbound -Protocol TCP -LocalPort 4035 -Action Block
ufw
sudo ufw deny 4035/udp
iptables
sudo iptables -A INPUT -p udp --dport 4035 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4035 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4035' -Direction Inbound -Protocol UDP -LocalPort 4035 -Action Block

Related ports

4033sanavigator4034ubxd4036wap-push-https4037ravehd

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