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08-24-2007, 12:43 PM
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#1
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Guest
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weird NAT issue
Running bm38 on a nw6 box. All is running quite smoothly, except for a
weird issue.
Just got another block of public IP's, had to put them on a different
nic as the range is not near our existing public IP's. So now I have 2
public nics in my bm server.
Setting up a NAT entry on the 2nd nic. Nic is assigned addy a.b.c.d w/
a 2ndary addy of a.b.c.e NAT'd to a private addy.
Trying to connect a Tandberg vid conferencing unit to one at another
location. They tell me they see when we call, initially shows up as
addy a.b.c.e (2ndary addy), but then their firewall drops packets,
citing "illegal translation" errors coming from a.b.c.d (nic addy).
Any ideas?
ps - all the other NAT'ing we do on this server works just great.
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08-28-2007, 05:54 PM
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#2
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Guest
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Re: weird NAT issue
Stevo,
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08-30-2007, 01:20 PM
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#3
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Guest
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Re: weird NAT issue
Have a look at tip #51 at the URL below.
You might be better off with a single NIC and two addresses. I think
you are running into default gateway issues here, with some traffic
going out the wrong interface.
Craig Johnson
Novell Support Connection SysOp
*** For a current patch list, tips, handy files and books on
BorderManager, go to http://www.craigjconsulting.com ***
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08-31-2007, 04:30 PM
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#4
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Guest
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Re: weird NAT issue
Craig Johnson scribbled something like:
> You might be better off with a single NIC and two addresses. I think
> you are running into default gateway issues here, with some traffic
> going out the wrong interface.
Don't think that will be possible, as our isp gave us a block of
addresses not in the same range as our other. Also, these addresses
are only associated w/ a few ports on their switch, whereas the
original block is associated w/ a few different ports.
Only have one default route set up on my bm server, adding static
routes for things that have one of the 'new' addresses.
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08-31-2007, 04:58 PM
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#5
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Guest
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Re: weird NAT issue
In article <S%ZBi.3385$vI3.2720@prv-forum2.provo.novell.com>, Stevo
wrote:
> Don't think that will be possible, as our isp gave us a block of
> addresses not in the same range as our other. Also, these addresses
> are only associated w/ a few ports on their switch, whereas the
> original block is associated w/ a few different ports.
>
Other than VLANS on certain port issues, there should be no problem
with two sets of addresses on one NIC, compared to two NIC's.
Realize that traffic will always go to the default route, unless you
have a static route overriding for specific addresses. That means
traffic going out from one public NIC may have to jump to the other
public NIC to be sent out, which is going to require some filter
exceptions when using two NIC's.
Craig Johnson
Novell Support Connection SysOp
*** For a current patch list, tips, handy files and books on
BorderManager, go to http://www.craigjconsulting.com ***
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08-31-2007, 07:45 PM
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#6
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Guest
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Re: weird NAT issue
Craig Johnson scribbled something like:
> Other than VLANS on certain port issues, there should be no problem
> with two sets of addresses on one NIC, compared to two NIC's.
Issue I have is the ISP provided switch (which we have no control) has
address block A on ports 1-4, while address block B is on 5-8. I'm not
seeing how I can have two sets of addresses on one nic plugged into
only one switch port.
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08-31-2007, 08:23 PM
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#7
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Guest
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Re: weird NAT issue
In article <nS0Ci.3473$vI3.2889@prv-forum2.provo.novell.com>, Stevo
wrote:
> Issue I have is the ISP provided switch (which we have no control) has
> address block A on ports 1-4, while address block B is on 5-8. I'm not
> seeing how I can have two sets of addresses on one nic plugged into
> only one switch port.
>
Put another switch up that plugs into both ports?
Craig Johnson
Novell Support Connection SysOp
*** For a current patch list, tips, handy files and books on
BorderManager, go to http://www.craigjconsulting.com ***
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09-11-2007, 05:59 PM
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#8
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Guest
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Re: weird NAT issue
Craig Johnson scribbled something like:
> Put another switch up that plugs into both ports?
Had thought about that, figured something like that would not work.
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