Hello Ray, On 8/18/17, Ray via luv-main <luv-main@luv.asn.au> wrote:
I am in something of a bind my normal internet access i no longer with us as the 2G mobile network has been tuned off and although I have many years experience on Linux, little of this has been with the network config as (almost) always works "out of the box".
There are changes, definitely for the worse. My experience was a little smoother, but I need to do better. When Telstra discontinued dial-up, I had to move to a 4G broadband mobile modem, and pay for 4G when I only get 3g from the local mobile phone tower. Since that is about 500 meters by copper pair, it is well within ADSL range, but the equipment there is ISDN, no longer available, and voice and mobile phone. Now I pay $40 a month for 4Gig. Extortion.
The current situation is a have a Dlink 4G modem router, this has an IP address of 192.168.0.1. This is to be connected to my fire wall machine (currently running Debian 7) via a cat 5 cable to eth0. This machine has a 2 ethernet port motherboard, the second port eth1 will be connected to a (I think) switch which has my other 4 machines connect to it.
That is better than the Netgear Aircard that they foisted on me. it is Wi-Fi only, until I spring for the cradle. Telstra have had reports of it "not working", their network does not provide a reliable connection configuration every time, their "solution" is to reboot remotely at times I have yet to see a pattern in. Sometimes that "breaks" a working setup. I will need the cradle on several grounds, including running _MY_ router or switch and setting up a home network.
The IP address range is currently 92.168.1.1 (gateway) upwards with 6 address's in use. How is the firewall ports configured, is there a decent explantion on the net (remember I know little about the low level nuts and bolts but would like to find out.
I assume the 2 ports on the firewall machine will use 2 different IP address, is there any logic in there allocation, I also assume the default route for this machine will be eth0 (the port connected to the 4G modem router. In Debian in the /etc/network/interfaces file how is the default route determined.
Help, will be GREATLY appeciated.
Trying to get new internet access for when the 2G network was gone has been a real struggle. At this location only 2 options are availible, NBN satelite and 4G mobile broadband, unfortunately there is little information anywhere on how to configure either of them for linux. I tried satelite NBN but could not get ANY kind of reliable connection. A 4G dongle will work on linux but I could find NO config information at all and it appears plenty have tried and failed. THe current solution has been adopted as it only means setting up ethernet ports and doing bit of routing.
When the NBN is sorted, you should be offered a mobile broadband modem on the NBN, much like what you have, but there are too many reports of problems. Tony Abbot promised the NBN cheaper, sooner and fast enough. As a result of the changes, it will cost even more, be later and slower. As to configuration on the firewall, that is the gateway, the rest of the network will "see" the internet through the IP address of that firewall machine that faces your network. You probably need to set up Network Address Translation / NAT. The "internal" network addresses need bear no relation to the IP addresses on the firewall and modem that face one another, that is where you need to do the routing from one ethernet port to the other on the gateway or firewall machine, and that routing is what will allow or prevent various connections. I have not even started networking, so cannot advise on the practicalities, I too need to read up and would appreciate information.
Lindsay
Regards, Mark Trickett