dual nics on desktop

[rasczak]

I have a desktop that supports dual nics, one nic we'll call it nic1,is external connected to one wireless router, address is 192.168.0.45 let's say. the other nic is connected to my domain via a four port router which also has a 192.168.0.x addressing scheme. I'm abale to get out onto the internet, but am unable to see network shares or logon to the domain. have I done something wrong here? is this not possible? would it be better to establish another subnet? I'm just trying to keep the domain off of the net as much as possible, hence why i ahve this setup the way it is. is there an easier way of doing things?

fyi, the domain consists of three boxes two file servers and one DC all on a separate router. the reason why i have two routers setup is that i've got five total boxes and wireless laptop. the two of the boxes are gaming boxes thatt need internet, the other three are servers for my movies and "pictures" , family and otherwise 🙂 I want to keep the server away from the internet hence why i have the configuration the way it is. if I connected both both routers but purposefully did not input teh default gateway would i be able to protect my domain from intrusion?

 

[Nothinman]

You can't have two NICs going to 2 different networks with the same subnet range. How is the box supposed to know which interface to send a packet when it matches both networks?

 

[rasczak]

ok I thought I was doing doing something wrong. I guess I'll have to poen my network up to the Net.

 

[Aarondeep]

Setup 2 subnets like 192.168.0.x and 192.168.1.x for the other.

 

[rasczak]

just realized I misread Nothingman's post. so I create a new subnet, and i should be able to see my shares and logon to my domain?

 

[Nothinman]

Should being the key word, Windows isn't exactly known for handling multiple network connections very well.

 

[spikespiegal]

Should being the key word, Windows isn't exactly known for handling multiple network connections very well.

I have dual NIC's in several of my Windows servers and use them to connect to multiple networks at the same time - no problem. In one instance I have a Citrix box that's connected to both an inbound T-1 and high speed DSL at the same time, which means users connect remotley from the DSL, and when surfing the net on the citrix box are actually going back our through the T-1. Uber fast and help reduce any latency.

Provided I use seperate logical subnets, and the occasional 'route add', it's all pretty flawless. While Ideally this is something that could be handled on a good cisco router, those are 'managed' in my case and I'm not allowed to touch them.

With windows, most admins get themselves in trouble when they try to fart around with RRAS, which is the only way Windows can handle more than one gateway per NIC at the same time. I find installing another NIC (most of my servers now have dual onboard) and using the proper route add commands is far more reliable.

Good one about 'not knowing what network it was on'. NetBEUI has no clue which logical network it's on in the first place 🙂

 

[megamojo]

As spikespiegal said, that routing table is your friend, just make sure you put in the proper subnet mask to make your range come out correctly.

 

[skyking]

It's fairly easy to do, but DHCP is NOT your friend in this case. Each router will hand your computer an address AND a default gateway. Two default gateways = bad berries🙂
The NIC on the internal network should be configured manually with no gateway specified.
I just did this yesterday on two administrative computers at a private school. The school admins needed to download and access things the proxy server would block, so I gave them a direct connection around the proxy, as well as a connection to the protected network.