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Old 05-09-2001, 06:51 AM   #1
smurf
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Talking


Hi all,

I'm interested to know if I would be able to load balance 2 cable modems so that they would work as one.

My server is Redhat Linux 7 using IPCHAINS for my internal Windows machines. The ISP is blueyonder in the UK.

Any Links or advice welcome

Cheers

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Old 05-09-2001, 08:53 AM   #2
raz
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Hi Smuf,

I have a suggestions on how to do this, but as you didn't say "I want a cheap solution" I'm going to tell you the way some companies do it.

First off only your outgoing traffic will speed up, not incoming. "but if you talk to the ISP and give them a pile of cash they could get the BGP to point to both IP addresses and then you'll have incoming too"

Anyway what you do is buy 2 copies of FW1 from checkpoint.
Then setup 2 Linux boxes and load FW1
Then you get a second NT box and buy some software called rainwall to talk to each of the FW1 API's

Now you have a clustered firewall with load balancing and redundancy. "not cheap but works very well under pressure"
It costs "not including hardware" about £18,000 for the software.
For hardware only on nokia firewalls about £70,000

Most people would get a fat lease line, only people who want redundancy do it this way. "the Cisco PIX can also do it"

I'm sure there are some other ways to do this but I haven't come across any that work with proper load balancing of packets.

/Raz
 
Old 05-09-2001, 09:30 AM   #3
smurf
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HOW MUCH ???

Wow that much eh?

Thanks for the reply and i'm sure it works great but... HOW MUCH.

The Cable connection spec for my blueyonder cable modem is:-
512kb down
128kb up
it costs £25 a month
The linux server i use is a old home built.
PII 233, 128mb RAM, 10Gb HDD
I am a student and the network is at my house.

On the rebound does anyone know if I can hook a satellite dish up to my linux box so I can have cablemodem for upload and Satellite for download.

Thanks again Raz for the reply you are one of the priceless members of http://www.linuxquestions.org.

Keep up the good work
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Old 05-09-2001, 10:23 AM   #4
raz
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Cheers Smuf.

If you want to double the speed you can pay £42 a month from someone like madasafish for an ADSL connection.

It's going to give you 512kb down and 256kb up.
Also it's not shared by everyone in your street, it's a 20/1 contention ratio.. Cable is more like 50/1 I think, so overall performance is good. (or pay £100 per month and you getting 1024kb down, 256k up)

If your serious about a satellite connections, then there is a Patent for it. "6,205,473 entitled Method and Systems for Asymmetric Satellite Communications for Local Area Networks."

Check out http://www.helius.com/index3.html , they just managed to do it in May this year.

/Raz
 
Old 05-09-2001, 10:55 AM   #5
raz
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Location: London
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Angry

Just noticed something strange.

If you look at that address I gave you, the server will try and scan your IP addresses auth port "113", looking for info on your system.

Has anyone seen this before, it try's about 20 times each time you make a new connection to it.

I can think of a nice DOS attack on this type of scan.
I still think it's a stupid think to do as it sets off all types of alarm bells.

http://www.helius.com
216.250.129.176

Any ideas??
/raz
 
Old 05-09-2001, 11:27 AM   #6
smurf
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I'm still waiting for ADSL to become available in my area. As far as I know the ADSL modems supplied are USB which linux cant handle just yet.
What I am really after is a fast upload so my counter-strike server will work better. The Download is great maybe due to no one having a cable modem in my area.

Chears.

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