Brendan,
It really depends on what you are trying to accomplish. The SRX is
going to scale to much greater levels when it comes to Stateful
Firewalling capability - it basically operates on a flow forwarding
paradigm where it's designed from the ground up to handles sessions
statefully.
On the other hand, the MX with the DPC will give you some of this
capability, but remember the underlying paradigm is quite a bit
different. These are packet forwarding devices, so any traffic that you
want to handle statefully will have to be routed through the DPC. As
such, there are finite limitations to what you can put through a single
DPC and therefore wouldn't be appropriate if you want all your traffic
to be handled statefully.
Plus, on the MX with the DPC it is basically configured using
interface-style and next-hop style service-sets which is quite a bit
different from the configuration syntax used on the SRX. The SRX is a
lot more straightforward and simpler to configure when it comes to this
type of functionality. Of course, I am not trying to dissuade you from
using the MX in this scenario, it's perfectly valid if you only want to
handle a subset of the traffic statefully.
Stefan Fouant
JNCIE-ER #70, JNCIE-M #513, JNCI
Technical Trainer, Juniper Networks
http://www.shortestpathfirst.net
http://www.twitter.com/sfouant
On 7/12/2011 1:19 PM, Brendan Mannella wrote:
Nice, and if I decided I want stateful firewalling and IPS, I see I can use the
DPC card...
Are there any pros/cons to this vs just buying a separate SRX?
-----Original Message-----
From: OBrien, Will [mailto:obri...@missouri.edu]
Sent: Tuesday, July 12, 2011 1:04 PM
To: sth...@nethelp.no
Cc: Brendan Mannella; juniper-nsp@puck.nether.net
Subject: Re: [j-nsp] MX Firewall Capabilities
Yup. That is correct. Border filters are no problem without the ms-dpc.
Sent from my iPad
On Jul 12, 2011, at 12:56 PM, "sth...@nethelp.no"<sth...@nethelp.no> wrote:
Just wondering what the firewalling capabilities are with the MX series vs the
SRX. We just would like to have basic firewall (block all incoming ports, allow
specifcs). Would we need the MS-DPC to achieve this? The new router will be are
trio cards.
As long as you don't need *state* tracking but simply basic filtering
on ports, IP addresses etc your standard MX cards work just fine - no
need for MS-DPC.
Steinar Haug, Nethelp consulting, sth...@nethelp.no
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