Cisco and Netgear Routers

[DominionZA]

Hi all,

I got my Cisco router from Goal today with 5 fixed IP addresses on the subnet mask 255.255.255.248. The router is not configured with DHCP, firewalling, etc... It simply provides my gateway onto the net.

The Cisco replaced my Netgear DG834G ADSL router. My netgear IS my DHCP server, hardware firewall and wireless access point and is configured with the IP 192.168.0.1 on subnet 255.255.255.0.

I have plugged my Netgear into the Cisco and my LAN hooks up to the Netgear. The problem I am now having is as follows...

If I want my internal PC's to get onto the net, I have to configure the netgear with one of the five IP's available to me (provided by Goal) and the same subnet as the Cisco. This is a waste of an IP adrress, and only leaves 4 available to me. I have 7 computers on the network so as you can see, this already creates a mess for me. Not enough IP's.

What I want to do, is leave my Netgear as it was, and set the internet gateway for the Netgear to the Cisco IP. How? Then I can still use DHCP as it was and my internal computers can use the range 192.168.0.x
Then the 5 IP's can be reserved for external use, and use NAT to forward to the relevant servers.

Quite clearly, I don't quite understand how this all works and/or how to set it up.

Can anyone provide some help on this combo of routers?

TIA

 

[DominionZA]

No-body know how to do this?

 

[Darth Garth]

Is it a Cisco 837 ???.
Ditch the Netgear and use the Cisco for DHCP and NAT

 

[DominionZA]

Hi,

Ye, it is a Cisco 837. But it does not look like I have access to the router to configure it. It came pre-configured with DHCP off, and if I want it on, I have to send an email to Goal, who in turn forward it to IS, and then I wait. I have tried to access the Cisco myself, but don't have the username/password to get onto it as it came pre-configured.

I am trying to get around this by using the Cisco for my net connection, and the netgear as I used too with the DHCP server, hardware firewall, content filtering etc...

Do you perhaps have any ideas on how to get into the Cisco if it is already pre-configured? I am weary of hitting the reset at the back in case I cannot re-configure it myself and lose my net connection until support can fix it again.

I see on the Netgear there are static routes, but the gateway IP for the route has to be a router on the same subnet which renders this feature useless.

I have spend a few hours reading material on the net on how subnets and IP's work and have learned quite a bit, but not nearly enough to understand how to configure what I want to do. *sigh* And Goal don't have after hours support so I cannot even call to find out how to do this.

Another ?. If I ditched the Netgear (not entirely tho, cause I still want the Wireless Access Point for the kids computers), and configured the Cisco to act as my DHCP server, how would I get it to open up a bigger IP range. The static IP range that Goal gave me was 196.211.96.210 to 214 on subnet 255.255.255.248. I don't want to use ANY of these IP's for my machines except one for my server. The rest of the machines must sit on 192.168.0.x IP's.

 

[DominionZA]

2 corrections...

The Cisco is a Cisco 877. Not an 837.

It came from GamCo, not Goal (dunno what I was thinking).

I got so fedup with not having access to my router that I reset the damned thing. I was not supplied with connectivity details so have lost the internet connection but at least have everything else. *sigh*. GamCo support is really up the pole. No-one around after 17H00. They only work office hours - support included.

 

[Person]

Just set everything to auto and away we go.

 

[love56k]

DANGER
GEVAAR
KWAPHELA!
http://www.mybroadband.co.za/vb/showthread.php?t=45884​

 

[thisgeek]

Just set everything to auto and away we go.

Right - you obviously know what you're talking about, eh?

@ Mike Smit - Go search Cisco.com for 'password recovery' - there is usually a procedure where you can reset the password on the router without damaging the existing config. If you've already damaged the config, then "Oops".

What do you need the fixed IP's for?

You can still use your netgear - you will just need to disable PPPoE and configure its WAN interface or uplink with one of your static IPs, and then set the Cisco router's address as the Netgear's default gateway.

If you're after something a bit more complicated - like hosting services on each of your static IP addresses while still keeping your network secure - then you might need something a bit more sophisticated than the netgear, like a dedicated firewall. I'm not sure - off the top of my head - if IPCop can handle forwarding multiple addresses, but I'm sure there are other free firewalls out there that can do that, should you have the necessity.

 

[hennievr]

I cannot understand why they gave you static addresses for an adsl line, very unusal for SA. You dont need to expand the IP range, you only need one IP and do port forwarding if the router supports it, otherwise you will have to setup your server to do this. What server you runnning? If it is Windows server you can setup your server to handle the DHCP and not the router, but if you really want to you can setup the router for this (192.x.x.x.) range. The netgear you can plug in to the cisco 4 port switch on the cisco router and use it purely as an AP.

 

[DominionZA]

Wow, quite a few responses this AM.

I pushed in the reset switch at the back of the router. Is it still possible to recover my ADSL account settings from there?
I have emailed IS and GamCo to get these settings, but they don't appear to read emails properly. I told them that I reset the router to factory defaults and therefore need my ADSL account settings to reconfigure it. They responded telling me to leave it on and they will configure it for me. How they are going to do this when I have reset it, I don't know.

Anyway... I need the static IP address as we do a lot of web development and it is purely to run a "temp" server for clients to view progress. Once done, their sites are uploaded to WA hosting. I only needed one static IP though, and not all 5 they sent. And yes, I did use DynDns before, but it is not very professional to give out a DynDyn URL to clients to view progress when I can give a professional URL out.

How do I configure the netgear to use the Cisco as the default gateway. I hunted settings for ages last night and came up empty (don't really know what I am looking for I suppose).

The Cisco and Netgear are also on 2 different subnets so I would need the Netgear to forward all outgoing traffic to the Cisco jumping across subnet boundries.