[j-nsp] Static Routing - SRX

[Paul Stewart]

Thanks... yeah, pretty much.

We installed the static route and were unable to reach anything on the
172.30.200.0/24 network from a machine in the 192.168.20.0/24 subnet.  On
that actual machine (Windows 7) we installed a route in Windows and were
able to communicate no problem (bypassing the route statement on the SRX).

This seems to imply that by using a default route you can't take traffic
into an interface and route it back out the SAME interface - an issue we
used to face on the Cisco PIX boxes at one time.

Looking for a workaround to this - our solution at this point is to bring
the 192.168.20.121 device (which is a VPN appliance that connects us to our
billing platforms) in via a subnet on a directly connected interface.  The
downside to this is that it involves some routing changes on the VPN portion
which we're trying to avoid as it involves a third party.

Literally on the Cisco 2800 in place it's "ip route 172.30.200.0
255.255.255.0 192.168.20.121".  On the SRX we have "set routing-options
static route 172.30.200.0/24 next-hop 192.168.20.121".

Thanks,

Paul



-----Original Message-----
From: Michael Damkot [mailto:mdamkottwc at gmail.com] 
Sent: Wednesday, November 03, 2010 1:55 PM
To: Paul Stewart
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] Static Routing - SRX

Paul-

Just to make sure I'm tracking correctly, you've tried installing a static
route and it didn't work? 


On Nov 3, 2010, at 11:48 , Paul Stewart wrote:

> Hi there.
> 
> 
> 
> Can anyone give any suggestion/guidance on the following.
> 
> 
> 
> I'm trying to do a static route *out* the same interface that the traffic
> came *in* on.  This is on an SRX-240
> 
> 
> 
> Here are the details:
> 
> "Private": 192.168.20.0/24
> 
> "Public": 216.168.x.x/32
> 
> 
> 
> Static route: 172.30.200.0/24 to <gateway - 192.168.20.224> to
> 192.168.20.121
> 
> 
> 
> 192.168.20.121 is the IP on a VPN appliance.
> 
> 
> 
> Traffic from a client computer never gets routed to the VPN appliance.
This
> works on a Cisco 2800 without a problem, but I can't get it working on the
> SRX.
> 
> 
> 
> So, to walk this through a bit more - a computer sitting on the
192.168.20.0
> subnet has a default gateway of 192.168.20.224.  We want a route on the
SRX
> that routes any traffic coming into 192.168.20.224 that is destined to
> 172.30.200.0/24 to be sent to 192.168.20.121.  In Cisco 2800 it's just a
> static route.
> 
> 
> 
> Ran across this challenge in the Cisco PIX world as well..
> 
> 
> 
> Thanks for any input..
> 
> 
> 
> Paul
> 
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