My modem is: UPC connect box wifi modem
Connected devices: TL-WR741N Ethernet4 (my router) 192.168.0.220/24
Port forwarding: 192.168.0.220 port 80 Both protocols enabled
ping 188.8.131.52 hangs (this is my internet address)
192.168.1.100 displays the apache start page (Apache2 Ubuntu default page).
connection information shows, my ip address is 192.168.1.101
ping 192.168.1.101 pings well.
ping 192.168.1.100 shows: from 192.168.1.101 destination host unreachable
I also tried to connect my computer directly to the UPC modem, without the TP-link router.
In that case my ip address is 192.168.0.192, apache server works using 192.168.0.192
the upc modem's ip address is 192.168.0.1
port 80 is forwarded in the upc modem
my internet ip, 184.108.40.206 does not answer to ping, and (of course) also not as apache server.
You probably have DS-Lite with a public Ipv6 and a private Ipv4.
With this configuration it's impossible to connect to your LAN devices from outside.
You have to call UPC under 0800 66 88 66 and ask them to switch you back to Ipv4 only.
Then you should be able to put you ConnectBox into Modem-Mode. In that case your Tp-Link gets a public Ipv4 and you can use the portforwarding of theTP-Link to your Apache Server.
Firevall in UPC modem is disabled.
Port 80 is on TP-LINK router forwarded
Apache server's ip, 192.168.1.101 is forwarded to port 80.
A new information: I asked someone to ping my computer and also to reach my server.
He could ping my computer and also see my apache server's page.
Now-strangely I also can see my apache server's page using 220.127.116.11
The only problem remained is, that I can not ping myself.
My UPC modem itself can ping 18.104.22.168, but command line ping can not.
Please see the attached images.
edited on 04-09-2018 08:15 by Daniele_UPC
If you use a TP Link Router, please disable the Firewall of UPC, or set your TP Router in a DMZ.
So therefore you can try to:
1. disable Firewall of Connect box.
have a nice day