RE: cable modem issue!!!any help appreciated

[Dan Schad <dschad seielect com>]

Title: Re: Connecting a Laptop to a Local Network to get Internet Access

Kapil,

 

A normal installation of this type is very popular.  I'm not sure which type of routers you have.

 

If you have a cable modem router (Like Linksys) there should be ports for the Cable Modem either USB or Ethernet.  Make sure you find out which one and let Time Warner know this before you get the RR Cable Modem.  I would suggest Ethernet...

 

You would then connect the wired devices directly to the router where the Cable Modem is connected.  These should work just fine.  Make sure if you have hard coded IP addresses on your systems you change the gateway address and addresses to match that of the router OR make sure your network addresses for the router are the in the same subnet as your other PCs.

 

NOTE: The best way to do this is to just allow your router to give your PC's addresses.  This is called DHCP.  If you have no current network at all, all you should have to do is connect each system to the router, install the networking pieces of XP, RH, etc and you should be ok.

 

The wireless stuff however, you should not connect the wireless router to your other router unless you know how to setup routes between different networks, OR you know how to enable bridging on the wireless router.  Again, not sure which type of wireless router you have but if it supports bridging you can get it to work but it will really be a hassle I think.  I would just get a Wireless Access Point device and then get your Notebooks the wireless cards. 

 

NOTE: I strongly recommend 802.11g stuff.  It is MUCH faster than 802.11b.  802.11b is really on effective 2mbs while the spec is up 11mbs.  802.11g is much more like the performance of ethernet but the specs are up to 54mbs. 

 

A diagram of this is something like:

 

NOTE: The Cable Modem should have Ethernet or (USB)

The Cable Modem Router (Like Linksys) Should have a WAN/Modem Connector (USB or Ethernet) the RR Modem should NOT be plugged into the same 4 ports as the other devices.

I'm assuming you do not have something like a CISCO Router since you indicated this has a 4 port hub built into the router.

A WAP is a Wireless Access Point.  This can be a WAP, Wireless Router, or Wireless Bridge

 

RR CM -- CM Router  -------------------------

                                  !       !        !   

                                PC   RH   WAP     --+-+-+-+--   NB Wireless Cards

 

Hope this helps,

Dan

-----Original Message-----
From: Assudani, Kapil (UMKC-Student) [mailto:kan74 umkc edu]
Sent: Sunday, January 04, 2004 4:26 PM
To: redhat-install-list redhat com
Subject: cable modem issue!!!any help appreciated

hi ALL,

i am thinking of getting the road runner cabe modem service ,i have an internet router with 4 ports and another wireless router.

i have one laptop and a desktop having red hat 8 and windows xp respectively which i want to hook to cable modem without using wireless,then two others users have a one  laptop each and  they want to hook to but need wireless access.Is it possible that i use two ports from my internet router and they use two ports of the wireless service.

i am thinking like one port of internet router goes into cable modem ,and other two i use for accessing internet.the 4th one goes to the WIRELESS ACCESS POINT/router is this scenario possible or what willbe the issues!!

thanks in advance.

regards,

kapil

---

From: redhat-install-list-admin redhat com on behalf of Stuart Sears
Sent: Sun 1/4/2004 12:58 PM
To: redhat-install-list redhat com
Subject: Re: Connecting a Laptop to a Local Network to get Internet Access

On Sunday 04 January 2004 18:34, rab wrote:

> I ran the following command as root:
>
>  /sbin/iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source
> XXX.XXX.XXX.60

service iptables save

incidentally, you external IP is permanent, is it?
if not then you want
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

--
Stuart Sears RHCE, RHCX


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