Hi,
> In my first query I wanted to know how I can manage to
> provide internet connectivity to all the machines without having a need
> to keep the main machine (with the ISP installed Ethernet) always
> switched ON (For Routing). So I found out a way. I am planning to first
> establish a LAN for these three computers and then connect the Line
> (RJ45) from ISP to the same HUB used connect my LAN. Will this work ?
Its possible when u have all the three machine are in same subnet, i mean
three different Static IP address.
and the gateway, subnet masked...assgined by an ISP.
> My ISP provides IP through DHCP; NOW the issue is how all the three
> machines will get different IP's (Oops I forgot its DHCP) Can ISP
> restrict the number of PC I put on to the network from a single
> connection ?
As your ISP provides the IP through DHCP, then u need to have one PROXY
server. and the other two machines
should i have Private IPs...Below few lines are the simple proxy setup using
linux box.
echo 1 > /proc/sys/net/ipv4/ip_forward
/sbin/ipchains -A forward -s 192.168.1.0/24 -j MASQ
/sbin/ipchains -A input -p tcp -s 192.168.1.0/24 -d 0/0 80 -j REDIRECT
8080
/sbin/ipchains -A input -p tcp -s 192.168.1.0/24 ftp -j ACCEPT
/sbin/ipchains -A input -p tcp -s 192.168.1.0/24 ftp-data -j ACCEPT
/sbin/insmod ip_masq_ftp
> want to know what crossover connection is and when it is required in a
> network.
Crossover Connection, used in following situations
1. When You want to connect (only) Two computers.
2. When you want to connect TWO Unmangaed Switches.
3. In a HUB, When there is no UPLINK port.
Basic Logic is : wht ever Computer A transmits, it should be receive part
of Computer B, and vice versa.
How to build ??
You need UTP wire or LAN cable with RJ 45 connector. One end of the cable
should be 1,2,3,4,5,6,7,8 order
and other end of cable should be 3,6,1,4,5,2,7,8 order.
Jai
----- Original Message -----
From: Raghvendra Bali <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; 'Vinu Chandran'
<[EMAIL PROTECTED]>
Sent: Wednesday, September 11, 2002 12:51 AM
Subject: Attn: Net-Admins someone needs U [RE: [LIH] LAN Configuration for
internet connectivity]
> -------------------------------------------
> LAN Configuration for internet connectivity
> -------------------------------------------
> Hi,
>
> I am the originator of this thread. I would like to thank Vinu Chandran
> for the only reasonable reply I received. Thanks.
> But read on more help is needed.
> I would like to elaborate the query though it was well explained in the
> original message posted to LIH.
>
> // query starts here.
>
> My ISP provides connectivity using an Ethernet card installed at the
> client's end through a nearby switched. So NO cable modem is needed at
> my end. I want to split this connection to three computer installed in
> different rooms. In my first query I wanted to know how I can manage to
> provide internet connectivity to all the machines without having a need
> to keep the main machine (with the ISP installed Ethernet) always
> switched ON (For Routing). So I found out a way. I am planning to first
> establish a LAN for these three computers and then connect the Line
> (RJ45) from ISP to the same HUB used connect my LAN. Will this work ?
> My ISP provides IP through DHCP; NOW the issue is how all the three
> machines will get different IP's (Oops I forgot its DHCP) Can ISP
> restrict the number of PC I put on to the network from a single
> connection ? Will I get reasonable speed using this topology? Also, I
> want to know what crossover connection is and when it is required in a
> network.
>
> I believe some serious networking help is required at my end.
>
> Regards and thanks
>
> Raghvendra
>
> Vinu Chandran wrote in reply to [LIH] LAN Configuration for internet
> connectivity query from Raghvendra
>
> > In ur case the best and easiest way is to get IP's for all your
> >machine from the ISP to whom u r connected. U can request to your cable
> >modem service provider to give u IP's for all the internal machines.
> >Connect the cable modem directly to the Hub (check for uplink port at
> the >Hub for straight thru connection, else use cross over). Inturn
> connect all >the machines to the same hub. If your ISP provides DHCP,
> then conf. all ur >machines to dhcp otherwise take the IP's, DNS entries
> and default gateway >ip from ISP and conf. the same in ur systems.
>
> >Usually Cable modem ISP's won't be having problem giving u extra IP's,
> why >I know is I'm working for a Cable modem ISP. :). We used to provide
> IP's as >the customer needs.
>
> >regards
>
> >Vinu Chandran
>
> > On Fri, 6 Sep 2002 18:42:29 +0530
> > "Raghvendra Bali" <[EMAIL PROTECTED]> wrote:
> >
> > > Hi Guys,
> > >
> > > I have a cable internet connection. The ISP provides an Ethernet
> card
> > > and connectivity through DNS to the clients.
> > > I have three PCs in different rooms. To provide internet
> connectivity to
> > > all the PCs What I can do is to setup my own LAN, using another
> Ethernet
> > > card and a hub, connecting these 3 PCs and setting up a proxy or DNS
> in
> > > the main PC with cable internet connection. In this case I have to
> keep
> > > the main PC switched on all the time to ensure internet connectivity
> to
> > > all the PCs.
> > >
> > > (Q)-> Is there a way to achieve this task without having a need to
> keep
> > > the main PC switched on all the time ?
> > > i.e. What can be a alternate LAN configuration
> > >
> > > I hope my problem gets solved.
> > >
> > > Regards,
> > > Raghvendra
> > >
> > > -[My Contact Info]-----
> > > Raghvendra Bali
> > > Netmates Infosystems
> > > http://www.balifamily.net
> > > [EMAIL PROTECTED]
> > > Tel:91.522.340279[IN]
> > > Fax:1.586.314.7060[US]
>
>
>
>
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