IP Networking

Hi,

I am trying to add a static route in one of 3 server (S3) so that I can access the main application server (S1). But problem is, the server (S3) where I am trying to add static route is connected with another server (S2) which is in same private network of application server (S1).

I have 3 servers. servers' IP suppose:

S1:
eth0: 10.10.8.26
255.255.255.0
10.10.8.1

S2:
eth0: 10.10.8.48
255.255.255.0
10.10.8.1

eth1: 192.168.100.1
255.255.255.252

S3:
eth0: 192.168.100.2
255.255.255.252

Here 192.196.100.2 is P2P connected with 192.168.100.1

But I want to access 10.10.8.26 from 192.168.100.2

Your expert advice is highly appreciated. Thanks in advance. Have a nice day.

Regards,

Imran

Well, you might need a static route at each end to keep the traffic off S2. Can you tell S2 not to forward?

So I have to add static route in S1 & S3 ? How can I tell S2 not to forward?Actually, I m new in unix environment. Would you please help me with command so that I can apply those in the terminal of S1 & S3.

FYI, from S3 I can only ping 192.168.100.1 not 10.10.8.48

Thanks for your reply & assistance.

Regards,

Imran

---------- Post updated at 06:05 PM ---------- Previous update was at 12:38 PM ----------

Can I use port forwarding to resolve this issue?

On S2 if I configure port forwarding like this 192.168.100.1:1443 -> 10.10.8.26:443, I will be able to access the application from S3 through https to 192.168.100.1:1443 ?

I think you need a router to exchange packets between the 10... network and the 192... network. If S2 can act as a router from S3 to S1, fine. Make it the gateway for 10... on S3. If you have another router in your local area, use that.

There might be a remote chance depending on your system' s setup, that you could use an alias interface on S3 to interact with S1. On my linux system, I do it like

Code:

# ifconfig eth0:1 192.168.20.1
# ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:1f:c6:4c:d0:e2  
          inet addr:10.1.1.1  Bcast:10.1.1.255  Mask:255.255.255.0
. . . 

eth0:1    Link encap:Ethernet  HWaddr 00:1f:c6:4c:d0:e2  
          inet addr:192.168.20.1  Bcast:192.168.20.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

I'd be very interested in your results!

Yes, I want to apply port/ IP forwarding in S2 so that can access S1 from S3. But can't figure it out how to do that. Problem is mine that I am so much novice in unix environment. Would you please help me with command that can be applied in S2 through terminal?

Sorry, I can't answer your port forwarding questions sensibly. I'm not sure you need it at all if you set up routing correctly.
Still there were two other proposals in my post that you might want to give a shot.

I think routing between S2 & S3 will be easy way rather than thinking port forwarding or static routing. I will try & let you know the result.