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How to setup Sonicwall 2040 for 2 non-contiguous public address ranges

Posted on 2005-05-16
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Last Modified: 2012-05-05
My ISP provided me with 2 address ranges that have a different third octet.  We have the sonicwall setup with subnet mask 255.255.0.0 so that it works, but packets are not routed outside to/from locations with the same first two octet addresses. (ie same ISP customers).  This has been ok, but now we have a need for accessing one or more of those public addresses.  

Our ISP says to simply set the subnet mask for both ranges at 255.255.255.240, and the gateways to their respective hosts, which are different.  Unfortunately, I cannot see how to do this on the Sonicwall 2040.  Sonicwall had originally advised us to set to 255.255.0.0, and I guess they're the experts, but I just wanted to check if there is a workaround.

Any Sonicwall experts out there?  Thanks.
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Question by:wburke121
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JConchie earned 2000 total points
ID: 14014549
The best work around would be to get your ISP to give you a single address range for all you IPs......they may carp a bit at doing so, but if you insist that that's what you need, and tell them that if they can't help, you may have to look elsewhere, it will probably happen.

Any ISP should be able to give you at least a dozen addresses in the same range.  If I might ask, how many external real world addresses do you need....and why?  Is this something that can't be addressed [pardon the pun. ;-)] with NAT?
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Expert Comment

by:80211support
ID: 14185836
Login into the IP Address of the sonicwall & 
enter your user\id info, then browse through
the left-hand sidebar until you find the
dns servers 1 - 3 area ( most isps only provide
two dns server addresses, so you can
leave the third one blank ).

Once that is set, find the entry for the gateway
ip address, and enter in the ip address your
isp assigned you, as well as the subnet mask
associated with it.

Multiple address ranges can be configured using
the "wizard" icon in the sidebar.  SonicWall uses
these wizards to configure port access.

To access this network over an encrypted vpn tunnel
download the third party vendor app sonicwall solicits
for remote users:

http://help.mysonicwall.com/applications/vpnclient/

This *.zip file should only be extracted & installed
after the appropriate configuration has occured
in the sonicwall interface for "group" vpn settings.

Ramming Speed!!!!!!!!!!

<advertising removed -- Lunchy>
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by:JConchie
ID: 14188953
80211support:

Nice canned shotgun response guys, too bad it has nothing to do with the question..this is not about DNS or VPN...it's about how to deal with two non-contiguous WAN IP ranges.    And while the Sonicwall will let you assign a single range of IP addresses to the WAN, it won't allow you to assign two or more...other than by, as suggested by SonicWall Support, changing the subnet mask from a class C to a class B........the actual question asked here is if there is a viable workaroung for that situation.....your response doen't work at all.

And, by the way, advertising your company and including outside email addresses in your response are both violations of your EE member agreement.

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