Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
Some cable internet providers lets you have two computers accessing the internet at a time. To have more than two computers accessing the internet you will have to pay for more IP addresses or use NAT. Since you don't have a router, you can setup Mandrake to share the internet connection. Then connect the hub to the second NIC and hook your Windows computer to the hub. This way you can connect multiple computers to the internet with out payiing for additional IP addresses to access the internet.
Cable has great advantage over xDSL. You can do load balancing to increase your throughput to get a little faster than T1 lines. You need another NIC, a hub, and time to tweak it. Though it will not decrease latency because latency is dependent on how many routes, how many loss packets, etc.
Originally posted by Electro Cable has great advantage over xDSL. You can do load balancing to increase your throughput to get a little faster than T1 lines. You need another NIC, a hub, and time to tweak it. Though it will not decrease latency because latency is dependent on how many routes, how many loss packets, etc.
Sorry, with 128Kb/s upload (maybe 256Kb/s at best) your cable modem will always be a joke compared to a real T1. 1.544Mb/s up 1.544Mb/s down.
As to the Mandrake problem, I would try an "ifconfig eth0 down" then an "ifconfig eth0 up" to see if it'll capture a new IP address ---or the DHCP address it needs from your cable modem. I'm not sure how you explicitly turn off multicast support in Linux. I'm pretty new to Linux networking. If you're using Mandrake though, I imagine there's a gui network tool you can use to configure the card.
First of all, I'm posting this from my Linux machine, aka I got the internet up.
First i tried unplugging the cable and hooking it to my DSL line, still no go. I wasn't sure how turning off the other computer (or taking it out of the hub) would help, but I figured I would try anyway. So I unplugged my XP computer, and bam, connected through MDK. Cool beans.
A few other things, my cable actually uploads at abt 900kbps...OptOnline *claims* 10mbps down 1mbps up, and comes damn close. Unfortunetly, they also block port 80, so I am throwing another CAT5 wire into this room, and I will connect the DSL (1.5/768) onto the server, and the cable will go to the computer.
If I connected the cable to a router, could I route it to all the computers in the house? The OptOnline people said I could, but they are so unknowledgable.
Anyway, that's my situation, whadda you think?
Thanks for ALL your help guys, I really appreciate it!
You can use just about any cable/dsl router that's available. This will give you NAT, DHCP, some limited port forwarding and some other options. Just get one with 4 or more ports. Or get a single-port jobbie and use your hub to network all the PCs.
You could also use an older PC with 2 NICs and dedicate it to being a firewall/gateway for your home network. This will give you a more powerful firewall than those consumer-grade cable/DSL routers.
Congrats on getting such a good speed out of your cable modem. I wish I could get a consumer-grade solution with speed like that. I have to pay 69.+ /mo. for 1.5/768. But then again, it's with Speakeasy which is a pretty geek friendly ISP with static IPs and all that crap.
Ya, I planned on getting Business Cable, but even on that OptOnline blocks port 80 and its just a huge hassle. Overall OptOnline = bad. But for someone who needs no customer support, and just fast DL, it's good.
Originally posted by gluc0se How do you setup a computer to be a firewall?
It's a big question you ask, one that deserves some research on your part. However, my opinion is that for Open Source, the best solution is to use OpenBSD with PF on an old PC with at least 2 NICs (PF: "packet filter"... a part of a standard OpenBSD release). The reason I think it's the best is because OpenBSD is arguably the most secure Open Source OS (even more arguably the most secure OS period). I think PF is not that hard to learn, and there are lots of good resources now for learning how to set it up (2 books, Absolute OpenBSD and another book by an OpenBSD developer exclusively dedicated to PF). Also, the documentation in OpenBSD is probably some of the best. And I find that it runs great on old x86 architecture. My firewall is an old AMD k6 266 and it smokes. In fact it's under-utilized. My set up is a machine with 3 NICs. NIC-a goes to my DSL, NIC-b goes to my DMZ where I host web, dns, mail, etc. and NIC-c goes to my NAT'ed LAN where my workstations are. My LAN is separate from my DMZ which is exposed to the Internet.
That's not to say OpenBSD is easy to work with for newer users. And the community is not as tolerant of people who don't do their homework...to speak euphemistically. It's not uncommon to see n00bs ignored or flamed. But their philosophy is that they take the time to provide stellar documentation, the end-user should take the time to read it. Take heart though, if a n00b like me can set it up and run it, just about anyone can.
There are lots of other solutions out there for a home firewall/gateway on just about any OS...all potentially as powerful.