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Technical details for: ONE WAY | ONE WAY ISP

Technical details - ONE WAY Full Route

The main important parts of a one way satellite internet service from customer's point of view are:

  • satellite settings (pointing the dish, locking the signal)
  • all the authentification with the satellite provider (VPN, proxy, IP).
We will not present here the satellite settings because they are almost the same as majority of the satellite services. Neither will we will present here VPN or proxy authentification since we already presented this on other pages.

What we propose here is to present the IP authentification in a simple manner so that anyone can understand. We belive that this sollution will help a lot any of our customers and visitors and can represent better their interest to have a powerful and smooth network architecture. We will combine here IP knowledge, network configuration and simple design to help you understand better when to choose this solution or when to choose other.

Full route can be used for one single computer (home user) or for an entire network (ISP, enterprise, small ISP, home network)

Home user environment

Firstly the home user should be connected to the internet, which means he already has a network interface (ethernet, wireless, etc.) and at any time he reboots he will have the same IP.

This network diagram looks like bellow::

Home user environment

  • 1 = own ip installed on network interface on home user pc
  • 2 = default gateway is installed on network interface of the provider

A well known secret is that ip 1 and ip 2 belong to the same subnet, otherwise they can't communicate one with another. Both IP belong to the same subnet, probably with subnet

In the same time we add a satellite network interface for receiving only - a so called DVB card. We intend to transmit over NIC 1 and to receive over the satellite.In acelasi timp, adaugam o interfata de retea satelit doar pentru receptie numita placa DVB, pe care intentionam sa o folosim doar pentru receptie. Vrem sa transmitem pe NIC 1 si sa receptionam prin satelit.

Now we jump for a short moment to the satellite provider network diagram. Because we talk about one way provider it is normal for his network to have a backbone internet connectivity and as well as an output. As a provider he might have few ip classes routed to him. What means that ? It means that if someone sents an ip package to an ip adress belonging to provider, the internet will route this back to the gateway of this network as you see in the following presentation:

Satellite provider network diagram

If the satellite provider accepts the package and forwards this package over his satellite service, then the home user can receive it with his DVB card presented up here.
This means that anyone from internet can send an ip package to our home user, if he has a DVB card corectly installed and has an account on satellite service we are talking about in this example.

Back to home user perspective

Now let's remember a little how http browsing works, step by step:
  1. home user sends request
  2. internet forwards this request to destination website
  3. website receives the request
  4. website replies to home user request
  5. internet forwards the reply to home user
  6. home user receives the reply and sees the page opening.
Because the internet knows where the ip of the home user is located, this last one will see the page opening.

Now let's introduce a change in the home user' scenario. Let's say that our home user asks for 2 ips belonging to the satellite provider. Let's say that one ip will replace the ip 1 and the second ip will replace the ip 2. And let's say that the network interface with ip 1 has as default gateway the new ip 2.
What will happen it's easy to imagine:
  1. any home user's request will go on the internet with same ip as ip 1 which belongs to the satellite provider.
  2. the request is forwarded by internet untill the website.
  3. the website receives the request and responses with a reply. Because the request is from an ip belonging to the satellite provider, it's easy to understand that the reply goes to the same ip.
  4. which means that the internet will forward the reply to the gateway of the satellite ip provider network. From here the reply will jump through satellite and will be received by home user via his DVB card.

Quite briefly, this is the aplication of the full route for a home user case. In this scenario, only one computer will receive the traffic over satellite. Now let's extend the principle to an entire network routed over the satellite, but before we end the home user scenario, I would like to mention that for a single computer home user scenario, we recommend the VPN sollution as being faster to implement and with many other advantages.

Entire network scenario

Scenariul retea intreaga

In the entire network scenario, all the computers inside the network should have setup ip belonging to satellite ip provider.

In this scenario ip 1 and ip 2 belong to local ISP space and ip i1, i2, i5 belong to satellite ip provider. We should not forget to add a dvb card to gateway server.

Similar with the previous example - home user - the requests will go on the internet from an ip belonging to the satellite ip provider, the website will reply, and internet will route this reply to the satellite ip provider network, it will follow the satellite jump and will arrive on the customer' satellite dish and from there to the computers network.


This sollution is useful when terestrial capacity can not be increased, but local customers are increasing. It is well known that having return channel over satellite (from customer's perspective) will free terestrial capacity up till 75%-80% - sometimes terestrial providers do not want or allow anyone to see that they use ip routed other way than terestrial. When this requirement occurs, then there is a very simple sollution: local network gateway server will establish a VPN link with the satellite ip provider, will define default gateway or default router over this VPN tunnel, and all the requests coming from local network computers will be forwarded to the internet via VPN tunnel and nobody will be able to see the request. Since the reply is via satellite the local computers can have activity hidden from public eye. For details about vpn sollution for enterprise customers we kindly invite you to visit this page.

Chiar daca vpn este o solutie usoara pentru a seta o retea intreaga sa aiba implementata intoarcere prin satelit one way, exista unele tari unde vpn este interzis. In acest caz full route poate fi o solutie mai performanta decat un proxy extern (alta solutie).

Even vpn is an easy sollution to setup an entire network, in order to have implemented the return path over one way satellite, there are some countries where vpn is prohibited. In this case full route might be a much performant sollution than an external proxy (other sollution). We must mention here that full route is not recommended to be used immediately, but only after all other sollutions are not working. Full route is not recommended by the majority of big providers but it is also not prohibited as well. Because full route requires that the local provider will setup a special ip class between him and client (home user case) than a complete working setup can be done only through a sincere and cristal clear colaboration between local customer and local provider. Least but but not last the satellite ip provider needs to create special firewall settings for full route customer.

In the end, full route is not a replacement for professional vpn sollution, but can be used in environments where vpn tunneling are prohibited or not allowed.

Technical details for: ONE WAY | ONE WAY ISP
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