Routing question...

[Rusty Brown]

Hey gurus...I have an issue I can't figure out, and KNOW it has to be
something very easy...just missing it.  Hope someone can (gently) tell
me what I'm missing...

Here's the "lab" setup. 2 linux boxes connected going thru a Cisco
router to get "outside". One linux box has 2 nics, the other 1. The 2
nic box is routing (/proc/sys/net/ipv4/ip_forward = 1) for the single
nic box.

Addresses are:
Cisco router 172.17.10.1

Linux router 172.17.10.2 and 172.17.11.1 Default gateway set to
172.17.10.1

Linux box 172.17.11.2 default gateway 172.17.11.1

ALL 24 bit SN masks

The linux router can get out to the world, the linux box can ping both
sides of the linux router, but no one else. What am I missing to let
the linux box get to the other side of the linux router?

Running RH 7.3, btw.

TIA for all your assistance.

Rusty
      

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