[pfSense Support] Re: Microsoft updates through pfSense

2011-02-23 Thread Dave Warren
In message
<8c26a4fdae599041a13eb499117d3c286b396...@ex-mb-1.corp.atlasnetworks.us>
someone claiming to be Nathan Eisenberg
 typed:

>> I doubt it, why would the SSL cause problems unless you denied clients
>> authentication, but why would you deny access to your own clients?!?
>
>You probably don't have the ability to sign valid certificates for 
>update.microsoft.com.  

With the ability to push root certificates out to machines it wouldn't
be difficult to dummy up certificates that would pass muster.

Of course just pushing the proper registry settings would be far easier
than screwing around with any of that.

>Since you're redirecting SSL traffic bound for 
>that destination, instead of telling the application to talk to the 
>right server, the common name is going to be wrong, and the SSL 
>handshake will fail.

SSL certificates aside, while Windows Update and WSUS provide similar
functionality the protocol isn't interchangeable and the functionality
isn't identical.


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[pfSense Support] Re: Microsoft updates through pfSense

2011-02-17 Thread Dave Warren
In message
 "Shali
K.R."  was
claimed to have wrote:

>But WSUS requires a domain controller for the perfect functioning, i also
>tried this without domain controller but its not working well

WSUS is absolutely the way to go.  WSUS has no need or use for a domain
controller, except to configure the machines.  You can build a .reg file
and import it however you normally manage your machines.

Once you're configured client-side there isn't much else you need to do,
the rest is done server-side.


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[pfSense Support] Re: Firewall security compromised by auxillary programs?

2011-02-05 Thread Dave Warren
In message
 Kurt Buff
 was claimed to have
wrote:

>On Fri, Feb 4, 2011 at 20:21, Joseph L. Casale
> wrote:
>>>Well, I hear of people running pfSense in a VM, and I wonder how do you
>>>avoid exposing the host OS to the network?  How can a firewall be run in a
>>>VM and not leave the host OS hanging out to be attacked?
>>
>> Well, if the interface is setup in a bridge with nothing else, what exactly 
>> is
>> addressable that you can connect to and then hack? Now add a vm and plug
>> a nic into this bridge and put pfsenses wan designation on it. When you show
>> me one case of the host being compromised I'll believe it, until then it's 
>> not
>> been done as far as I know...
>
>If the OS is a VM, then you might want to understand Blue Pill:
>
>http://en.wikipedia.org/wiki/Blue_Pill_%28malware%29
>
>And, I believe, it's just the beginning of the threats for virtual 
>environments.

A Blue Pill attack is effective against actual hardware, lifting the
running OS into a Hypervisor without the OS or user being aware.  

However, this type of attack wouldn't need you to be in a virtual
environment.  In fact, it might be more effective on real hardware than
within a VM environment since AMD-V and VT-x functionality itself isn't
available within a guest environment.


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[pfSense Support] Re: Firewall security compromised by auxillary programs?

2011-02-04 Thread Dave Warren
In message

Mark Jones  was claimed
to have wrote:

>Well, I hear of people running pfSense in a VM, and I wonder how do 
>you avoid exposing the host OS to the network?

Proper configuration?

>How can a firewall be run in a VM and not leave the host OS hanging out 
>to be attacked?

I can't speak to VMWare's design limitations, but Hyper-V makes it
trivial to bind the local machine's IP stack to one NIC, while Hyper-V
guests are bound to one or more other interfaces.

The attack surface is still marginally larger since the Hypervisor's
virtual switch is a potential target, but this is reasonably tolerable.

Crawling out of the guest environment and compromising the host isn't
necessarily impossible, but by that point your firewall is already so
thoroughly compromised that you've probably got bigger things to worry
about.

>Yes, I agree that having a jabber server on the firewall is less secure 
>than not having a jabber server, but I question it being less secure 
>than having it on my internal server.  If it is on the pfSense box and 
>becomes compromised, the hacker will need pfSense skills to get any 
>further, then they will need an additional set of skills to get at my 
>primary servers.  If I open the ports that the jabber server uses, then 
>they have access to my primary servers via the jabber server software 
>because the firewall is permitting connections into and out of the 
>network on those ports.

If the Jabber service itself is compromised then no additional skills
are needed to get out beyond what would be needed to get out of a
standalone server.

Sure, some basic OS skills will be useful, but being on pfSense is no
better or worse than anything else here.

>If this analysis is wrong, please someone point out where it is wrong.  
>This assumes that the jabber server only opens the ports for XMPP and 
>nothing else, no management ports etc.

There's a number of considerations.  To start with, many networks have
more than "inside" and "outside", your Jabber server doesn't necessarily
need to have access to anything at all other than other Jabber servers
(plus the ability to receive client connections from within the
user-facing LAN)

In this context, the firewall becomes the gatekeeper between each
subnet/VLAN/LAN/whatever, and so is a far more attractive target.

Also consider, if your Jabber server only opens ports for XMPP and
nothing else, and your firewall passes all traffic to those XMPP ports,
what benefit do you receive from having a firewall at all vs putting the
XMPP server completely outside your firewall?


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[pfSense Support] Re: Import shared key from XML

2011-01-12 Thread Dave Warren
In message <1906f75b-41fe-444f-95d6-a2ae2d3f6...@todoo.biz> bsd
 was claimed to have wrote:

>I am trying to import a Shared Key from a previous XML file, It 
>looks like the key found in the XML file can not be directly copy / 
>pasted in the shared key box. 
>
>Do you know what I have to "cut out" to make It work ? 

This might be a stupid idea, but create a new key, export the XML,
insert the old one and import?


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[pfSense Support] Re: How do I break down a /22 into smaller subnets to use behind(LAN) side of my pfsense box

2010-10-05 Thread Dave Warren
In message <002e01cb64bd$300fced0$902f6c...@c3a.ca> Adam Thompson
 was claimed to have wrote:

>(On an unrelated note - anyone know why I can't send emails to this list 
>from my BlackBerry?  Works for other mailman-managed lists elsewhere...)

For whatever reason this list is rejecting mail based on the MAIL FROM
SMTP command rather than the FROM header.


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[pfSense Support] Re: Allow Traffic Between Interfaces

2010-09-19 Thread Dave Warren
In message
 Chris
Buechler  was claimed
to have wrote:

>Firewall > Aliases. You should really get a copy of the book. :)
>http://pfsense.org/book

Kindle?


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[pfSense Support] Re: multi-wan, multi-lan security

2010-08-06 Thread Dave Warren
In message  Tortise
 was claimed to have
wrote:

>
>- Original Message - 
>From: "Dave Warren" 
>To: 
>Sent: Saturday, August 07, 2010 4:51 PM
>Subject: [pfSense Support] Re: multi-wan, multi-lan security
>
>
>> In message <24b7224eff7c4e19b1a43fd4df416...@dp2000xp> Tortise
>>  was claimed to have
>> wrote:
>>
>>>My ISP advised us not use common private LAN addresses for this
>>>(common problem) reason.  (I now use randomly generated addresses)
>>
>> I do hope you never need to contact the legitimate owner of whatever IPs
>> you're using...
>>
>> Personally, if my provider gave me such advice (not just a single rep,
>> but the provider's official policy) I'd find competent provider.
>
>Woops - sorry for being misleading.  I meant (and use) random numbers taken 
>from within the private address ranges.  (10.x.x.x etc) 

In that case, excellent advice and one I would absolutely agree with.  

I'm possibly overly sensitive on this particular issue just because I'm
tired of dealing with it professionally, one of $DAYJOB's partners used
to give out advice like this and we spent untold hours cleaning up.

I hope no offense was taken, certainly none was intended on my part and
if I came across to harshly, I do apologize.


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[pfSense Support] Re: multi-wan, multi-lan security

2010-08-06 Thread Dave Warren
In message <8c8f0f7add704cf491998cbe298fb...@dp2000xp> Tortise
 was claimed to have
wrote:

>Yes I was referring to ARP poisoning and my cable connection experience 
>which is the reason for the random (obscure) LAN subnet 
>range selection...  

It's worth noting that even if you use an uncommon LAN subnet range
selection internally, anyone in your broadcast domain could easily
observe your ARP packets and find your IP range, so you're not gaining
much security by obscurity here, although you are decreasing the odds
that two random 192.168.0.0/24 networks will cross-talk if you both made
the same configuration error at once.

This assumes the case of a large ancient cable modem network that still
broadcasts ARPs between client side networks on different modems, and
assuming a configuration error directly connects a LAN to the WAN
bypassing the firewall.  In reality it's been a while since this was
that big a deal on cable modem networks (or at least any that I've
touched), around here it's probably been 5+ years since you could see
floods of ARP requests.

I think that the cable modems only transmit ARP requests from WAN to LAN
for MAC addresses already known to exist on the LAN side, so strictly
speaking your cable modem won't pass valid traffic after the modem is
rebooted until the LAN side machine sends at least one packet up to the
modem.  This is a handy side effect of cable modems already needing to
track valid MAC addresses to limit the number of machines connected for
billing purposes.

10/8 is huge, 172.16/12 is a little less widely used and also
significantly large enough that I've never ever personally seen any
remote network overlapping with the /21 that I picked out for myself,
and I VPN into remote client sides regularly, and travel somewhat
frequently.


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[pfSense Support] Re: multi-wan, multi-lan security

2010-08-06 Thread Dave Warren
In message <24b7224eff7c4e19b1a43fd4df416...@dp2000xp> Tortise
 was claimed to have
wrote:

>My ISP advised us not use common private LAN addresses for this 
>(common problem) reason.  (I now use randomly generated addresses) 

I do hope you never need to contact the legitimate owner of whatever IPs
you're using... 

Personally, if my provider gave me such advice (not just a single rep,
but the provider's official policy) I'd find competent provider.


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[pfSense Support] Re: Fwd: Re: [***SPAM*** Score/Req: 05.6/5.0] Re: [pfSense Support] blocking Tor Networks

2010-01-06 Thread Dave Warren
In message  "Víctor
Pasten"  was claimed to
have wrote:

>A proxy server (squid, or another webfilter) cannot stop it (TOR 
>clients), because it's unable to analyze TOR traffic (encrypted traffic).

You don't need to analyze to block.  In fact, if you can't analyze
something, and it's not on a trusted-by-IP whitelist, block it.


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[pfSense Support] Re: PFsense + Load Balance + Squid

2009-12-05 Thread Dave Warren
In message 
Chris Buechler  was claimed
to have wrote:

>On Fri, Dec 4, 2009 at 2:46 PM, Dave Warren
> wrote:
>> In message 
>> Chris Buechler  was claimed
>> to have wrote:
>>
>>>That's how it works. Traffic initiated by the firewall doesn't get balanced.
>>
>> Is this likely to change in the future (2.0 or beyond)?
>>
>
>You can use floating rules in 2.0 to balance traffic from the firewall.

Awesome, thanks!

Just trying to plan out a long term strategy, short term I'll just run
squid on another box.


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[pfSense Support] Re: PFsense + Load Balance + Squid

2009-12-04 Thread Dave Warren
In message 
Chris Buechler  was claimed
to have wrote:

>On Fri, Dec 4, 2009 at 6:14 AM, Rafael Cristian  wrote:
>> Hi,
>>
>>
>>
>> I have problem in configuration the load balance in pfsense. I am configure,
>> but not get work the squid. My clients in Squid not balance, but In clients
>> out squid get balance normally.
>>
>> Anybody know why???
>>
>
>That's how it works. Traffic initiated by the firewall doesn't get balanced.

Is this likely to change in the future (2.0 or beyond)?


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[pfSense Support] Re: Shaping Bridge

2009-11-28 Thread Dave Warren
In message 
Chris Buechler  was claimed
to have wrote:

>On Sat, Nov 28, 2009 at 3:04 PM, Dave Warren
> wrote:
>> I'm looking at making a shaping bridge, hopefully using a single port
>> using VLANs (although this isn't a strict requirement)
>>
>> Is pfSense a good choice for this role?
>>
>
>It'll work fine, potentially with one caveat - I'm not sure how or if
>a bridge would handle 802.1q tagged frames with m0n0 or pfSense.

Fair enough, I can live with that.  I've got dual port Intel NICs in the
machines anyway (plus onboard NICs), I'm just a wee bit short on switch
ports, so if I can use VLANs, I can put off needing a new switch.

Thanks muchly!


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[pfSense Support] Shaping Bridge

2009-11-28 Thread Dave Warren
I'm looking at making a shaping bridge, hopefully using a single port
using VLANs (although this isn't a strict requirement)

Is pfSense a good choice for this role?  

(The reason I ask, researching this on Google yields several forums
discussions indicating that m0n0 is a better fit, but since I'm already
using pfSense in a few places, I'd prefer to use pfSense if it will do
the job)

Thoughts?


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[pfSense Support] Sticky Connections

2009-11-08 Thread Dave Warren
I'm running 1.2.3-rc3, load balancing two connections (MultiWAN, NAT
mode) shortly after enabling Sticky Connections I notice problems making
connections.

Looking through the lists this appears to be a known issue.  Is there a
workaround or is there any case where this does work or do I have
something misconfigured?


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[pfSense Support] Re: Quad NIC's?

2009-09-23 Thread Dave Warren
In message 
Simon Dick  was claimed
to have wrote:

>I even once used a 4 port 10Mb card with built in hub... :)

Those were fun days, weren't they?


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[pfSense Support] Re: 1.2.3-RC1 Web gui logout

2009-08-12 Thread Dave Warren
In message

"Joseph L. Casale"
 was claimed
to have wrote:

>>There isn't one in the 1.2 series since it uses HTTP authentication.
>
>Argh, that means I have to close my browser:)

You could close your browser, or you could use a browser that implements
a method to forget HTTP authentication.


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[pfSense Support] Re: Can captive portal authenticate based on windows login

2009-04-21 Thread Dave Warren
In message

Dimitri Rodis
 was claimed
to have wrote:

>Single Sign-on (aka one set of credentials) is one thing, the captive portal's 
>ability to automatically _receive_ (and authenticate) the credentials from the 
>requesting client/browser is another. Unless I'm misunderstanding, Ryan wants 
>to get rid of the username/password prompt from the captive portal, and have 
>the "current" windows logon credentials automatically pass to the captive 
>portal, which is currently not possible with pfSense-- ISA Server is the only 
>thing I know of that does this.

It can be done by any 'ol proxy that supports kerberos, but the browser
needs to know it's talking to a proxy to even try to authenticate, so it
would still take some browser configuration.


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[pfSense Support] Re: Intel Atom Install Trouble

2009-03-30 Thread Dave Warren
In message <49d1326b.3050...@elitemail.org> "Vaughn L. Reid III"
 was claimed to
have wrote:

>I have a Intel Atom based board that I'm trying to get pfsense to 
>install on.  I can boot fine into safe mode but I get a panic message 
>when I try the default boot config.  I can reproduce this from both the 
>pfsense ISO and after an actual install onto the hard drive.  I'm trying 
>to install 1.2.3 (downloaded today).

This is a shot in the dark, but try resetting the BIOS to it's defaults
and see if you've got any luck.

I've got an Atom 330 based system (Sorry, I don't have the mobo or
chipset details handy, beyond to say it's a Intel mobo) that panics
during the install based on some combination of BIOS options that I
don't entirely recall.

I have reason to believe there are some ACPI issues but haven't had the
time to track it down, but at this point if I disable ACPI I can't even
boot the system, it locks immediately after the Highpoint driver (I
don't use any Highpoint cards in this machine), and ACPI needs to be
enabled for the system to even boot.

Beyond the initial hardware configuration fun, it has been rock solid.


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[pfSense Support] Re: Internet at the lake? Rogers Mobile Internet Stick (Rocket) with pfSense?

2009-03-28 Thread Dave Warren
In message
<8a93eaa824a48b4abc87b3e3da03256ba953670...@xmail01.xunity.com> Chuck
Mariotti  was claimed
to have wrote:

>I have the option of staying/working from a home on a the Lake for a number
>of weeks this summer here in Ontario/Canada. Nice and relaxed. Unfortunately,
>the only internet access is dialup, which is not acceptable (of course).

I spent my last summer working remotely from various campsites and
cabins, it's well worth the pain.

>After much poking around, I borrowed my wife's iPhone, went up to the highest
>point in the house, stuck it up against each window, and low and behold
>with one of those windows... one bar of 3G. 3G / Edge jumped In and Out,
>but it was definitely there. Some tests were pretty good... 2mbit down,
>500kup... others, pretty bad... very bad... 3G signal would go down, etc... 
>but it's there!
>
>The one problem is, there are no leaves on the trees yet... and it's just
>one bar of signal. So I imagine it will get worse in a couple of months time.
>
>Second problem is, that the wireless provider here (Rogers) sells a USB
>Stick that will give me 3G Internet Access (like the iPhone). Model Ovation
>MC950D 7.2 USB Modem - HSDPA/HSUPA/UMTS... My concern is that this thing
>is as bad or Worse than the iPhone for receiving 3G signals. I would
>really like to not have to worry about signals here. Does anyone know
>if the antenna on this thing is significantly better than an iPHone? 
>Will I get 0 bars or 5 bars?

In my experience, the iPhone's 3G antenna / transmitter is less able to
cope with inconsistent or spotty signal then either my AT&T Tilt or my
Razr2 V9 (all on Rogers Wireless 3G)

Also investigate whether you can find an external antenna for whatever
device you end up, a $100 whip style antenna will take an unreliable
signal and make it reliable, a Yagi will make you think you're
hardwired.

>Anyone have any suggestions or solutions to this problem?

Depending on the area, you might want to take a look at TELUS' data
services.  I much prefer Rogers on my primary service, but I've taken my
TELUS EVDO card out camping with me, one trip we moved to a new
campground every day for almost two weeks only once ending up without a
solid EVDO signal, whereas we only had reliable 3G every third or fourth
day, we ended up having to fall back on GSM/EDGE the other days.

My experience was in Western Canada though, out east you might have
better luck with Bell rather then TELUS.


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[pfSense Support] Re: Internet at the lake? Rogers Mobile Internet Stick (Rocket) with pfSense?

2009-03-28 Thread Dave Warren
In message <4ad1738e0903271251l1713a491y14a69e8496202...@mail.gmail.com>
Dave Donovan  was
claimed to have wrote:

>I've got an HTC TyTn II.  I think you told me that you had the same
>one, or a similar one.  It has a connector for 2 external antennae.
>One is for GPS, I think the other is for cellular.  The external
>antenna may also solve the all-or-nothing issue with your 3g phone by
>giving you a bit of a boost.

You're correct, this is an external antenna jack.

>There is a registry hack to make the device support WiFi tethering.

Note that this needs WM6.0, WM6.1 apparently allows the carrier to
detect tethering and bill you extra (not that Rogers does this, to my
knowledge, but they could start)

>I know a TyTn isn't exactly cheap but if you don't have one already,
>you might be able to get one cheap with a screen defect or something.
>It's also quite possible that other, older/cheaper models would serve
>as well but I can only speak for what I've got.

They're surprisingly cheap on eBay/Craigslist now (vs the $600 I paid
for an unlocked unit when they first came out)

I could probably be talked into selling mine with some minor cosmetic
damage for $250 or so (I haven't looked at the new/replacement costs
yet, I just know what I want to buy instead, I need a replacement as
part of $DAYJOB involves testing WM software)

Contact me off-list if this looks useful.  Note that you'll probably
have to reflash the firmware, I'm on a modified one, although I could
probably flash a stock AT&T image back on the device before sending it
out.


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[pfSense Support] Re: Help with NIC Hardwares

2009-03-19 Thread Dave Warren
In message 
Victor Padro  was
claimed to have wrote:

>Neither way...single, dual, quad port(s) Intel's gigabit NICs will do the
>job as I stated before.

I'd second Intel's NICs, they're well worth their cost.


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[pfSense Support] SVG graphs fixed in Google Chrome

2009-01-09 Thread Dave Warren
FWIW, I just switched to the Chrome developer channel, SVG graphs
started working in 1.2.1.

Upgrading to 1.2.2 anyway, just waiting on the download.
-- 
Dave Warren,  d...@djwcomputers.com
Office: (403) 775-1700   /   (888) 300-3480


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[pfSense Support] Allow UPnP by MAC address?

2009-01-06 Thread Dave Warren
Is it possible to allow access to UPnP only from certain MAC addresses,
rather then by certain IPs?

(I realize I can just set up static IPs or reservations, it just makes
life somewhat simpler to avoid maintaining one more list if there is a
supported syntax)

Thanks in advance!
-- 
Dave Warren,  d...@djwcomputers.com
Office: (403) 775-1700   /   (888) 300-3480


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Re: [pfSense Support] What happens if the soekris hardware is defective upon arrival? The Cortex Systems way.

2006-06-23 Thread Dave Warren

Jonathan Gonzalez wrote:

I did a bank transfer for a soekris net4801-60 (256MB RAM) and other
elements. When it arrived the hardware only recognizes 128MB of RAM.
  
Can you reverse a bank transfer (like a charge back on a credit card?) 
-- If so, do it, send the box back COD (for the shipping expenses only) 
and let them figure it out.


--
Our enemies are innovative and resourceful...They never
stop thinking about new ways to harm our country and
our people, and neither do we.
-- George W. Bush 08/05/2004



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Re: AW: [pfSense Support] Multiple WANs

2005-09-08 Thread Dave Warren

Holger Bauer wrote:


using the same gateway for both wans won't work as you can't specify rules for 
this I think. the rules are applied to a gateway and with both gateways the 
same... :-/
you might have to come up with a workaround like having a nated router in front of one connection to use this as gateway on one wan and put the pfsense in the dmz of this router. 
 

I'm trying to avoid needing more then one router, if I go that route 
then I don't need multiple interfaces in pfSense at all :)


That being said, I might be able to force a different gateway -- I'll do 
a bit of experimenting.


Thanks!

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before marriage and after marriage. 




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Re: [pfSense Support] Multiple WANs

2005-09-05 Thread Dave Warren

Scott Ullrich wrote:


On 9/5/05, Dave Warren <[EMAIL PROTECTED]> wrote:
 


Quick question -- I'm looking at pfSense, and wondering if it's possible
to use two WAN interfaces which receive their IPs via DHCP, and also if
it's a problem if they share default gateways?

Long story short, I have two connections to the same ISP and would like to
direct some traffic to one, and some traffic to the other.  Can I do this?
   



Yes, DHCP on multi-wan is supported.   


Cool, that helps.

Any idea whether or not having the same (DHCP-assigned) "default" 
gateway IP on multiple WAN interfaces will cause a problem?  In other 
words, my reading so far suggests that routing is done based on the 
destination gateway, not the interface, although that may not be 
entirely correct.


Sorry if it's a dumb question, I'm just trying to get things planned out 
before I rewire to handle the net configuration -- Unfortunately my 
managed switch can't cope with the same MAC address on multiple physical 
ports even if it's different VLANs, so this change requires physical 
rewiring, I can't just reconfigure my switch :(


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[pfSense Support] Multiple WANs

2005-09-05 Thread Dave Warren
Quick question -- I'm looking at pfSense, and wondering if it's possible
to use two WAN interfaces which receive their IPs via DHCP, and also if
it's a problem if they share default gateways?

Long story short, I have two connections to the same ISP and would like to
direct some traffic to one, and some traffic to the other.  Can I do this?



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