which firewall product?

Jason Pack jpack at sevone.com
Mon Aug 5 12:48:34 UTC 2013


I'm pretty sure you can do this with any modern firewall... An ASA5505 is
always a good bet.

You'd just have to route the IPIP packets to a hairpin interface on the
firewall, then create a policy that handles packets coming inbound from the
hairpin.  Policies for handling traffic with that as the source interface
would be able to filter based on layer-3 info as normal.


The trick is, as mentioned, to route the de-encapsulated traffic back into
the firewall.  A quick googling shows a related example of this for the ASA
here: http://nat0.net/cisco-asa-hairpinning/

   *Jason Pack*
Network Security Engineer - SevOne
 4550 New Linden Hill Rd, Wilmington, DE, 19808
 | p: 302-319-5400 | m: 302-464-0253 |
e: jpack at sevone.com | w: www.SevOne.com


On Mon, Aug 5, 2013 at 5:45 AM, Kenny Kant <akennykant at gmail.com> wrote:

> If the tunnel is to be terminated on this firewall device I would say look
> into a Mikrotik box.  Alternatively you could make Cisco's IOS firewall /
> zone based firewall do this.  So look into an ISR?
>
>
> Sent from my iPad
>
> On Jul 30, 2013, at 3:00 PM, William Herrin <bill at herrin.us> wrote:
>
> > Hi folks,
> >
> > I'm trying to identify a firewall appliance for one of my customers.
> > The wrinkle is: it has to be able to inspect packets inside an IPIP
> > tunnel and accept/reject based on IP address, TCP port number and
> > standard things like that. On the packet carried *inside* the IPIP
> > tunnel packet.
> >
> >
> > From what I can tell, the Cisco ASA can't do this.
> >
> > Linux iptables can (with the u32 match module) but the customer wants
> > an appliance, not a server.
> >
> > What appliances do you know of that can do this? Is there a different
> > Cisco box? A Juniper firewall? Anything else?
> >
> > Thanks in advance,
> > Bill Herrin
> >
> >
> > --
> > William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
> > 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
> > Falls Church, VA 22042-3004
> >
>
>


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