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BinaryLimited

796 posts

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#175758 10-Jul-2015 19:10
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Hi Everyone!

Currently setting up servers and trying to figure out how to setup multiple public static ipv6 address on the fritzbox 7490.
Not sure where to start, iv had alook around the fritzbox gui but cant seem to figure it out.

Anyone done this before?

Thanks!




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fe31nz
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  #1340821 10-Jul-2015 19:41
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The IPv6 setup is in Internet => Account Information => IPv6 tab on my 7390.  But with IPv6, you do not set up multiple external IPv6 addresses, as all global unicast IPv6 addreses are "external" and unless your firewall prevents it, all your IPv6 devices on your network will be externally accessible as soon as the FritzBox has connected to IPv6.  Check on a box and see if it has an IPv6 address starting with 2 instead of f.  If so, then it has a global unicast IPv6 address and you had better check your firewall rules if you do not want it to be externally accessible.



BinaryLimited

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  #1340828 10-Jul-2015 19:53
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fe31nz: The IPv6 setup is in Internet => Account Information => IPv6 tab on my 7390.  But with IPv6, you do not set up multiple external IPv6 addresses, as all global unicast IPv6 addreses are "external" and unless your firewall prevents it, all your IPv6 devices on your network will be externally accessible as soon as the FritzBox has connected to IPv6.  Check on a box and see if it has an IPv6 address starting with 2 instead of f.  If so, then it has a global unicast IPv6 address and you had better check your firewall rules if you do not want it to be externally accessible.


awesome thanks, will double check that all now. still quite new to this whole ipv6 thing.




fe31nz
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  #1340866 10-Jul-2015 20:53
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Recommended reading if you want to understand IPv6 addreses:

  https://en.wikipedia.org/wiki/IPv6_address



Zeon
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  #1340898 10-Jul-2015 22:41
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Yes remember no more NAT with IPv6 - its how the internet should run. You have billions of uniquelly, globally routed IP addresses. As has been pointed out, its thus really important to check your firewall is enabled as NAT is no longer limiting direct connection to your devices.

Also look into SLAAC - easiest way of addressing.




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sbiddle
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  #1340987 11-Jul-2015 09:24
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And if you don't understand firewalls IPV6 suddenly becomes incredibly insecure with NAT no longer providing automatic protection.




fe31nz
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  #1341199 11-Jul-2015 17:05
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Except that I believe the FritzBoxes default to having sensible IPv6 firewall settings that do not allow in anything dangerous.  But since I only use my FritzBox for VOIP, not for my connection to Snap, I can not talk from experience.  So please make sure you check for yourself if you have IPv6 enabled.

BinaryLimited

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  #1341908 13-Jul-2015 08:30
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Thanks guys!
Going to get a UTM / Firewall setup today.
Been looking at untangle UTM, SOPHOS UTM and pfsense...




 
 
 

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aumouth
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  #1343364 14-Jul-2015 21:29
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http://fritz.box/system/security.lua
.
.. to see what opened ports for both IPv4 and IPv6 you have.

BinaryLimited

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  #1343371 14-Jul-2015 21:35
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aumouth: http://fritz.box/system/security.lua
.
.. to see what opened ports for both IPv4 and IPv6 you have.


awesome thanks.
made an ipv6 n00b error today...did port forwards and couldn't understand why i didn't have public access...then realized (thanks to fe31nz) that i needed to do port forward for ipv6 and not the default ipv4





splodge
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  #1345741 16-Jul-2015 20:03
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It's absolute rubbish that your devices are exposed to the internet by default using IPv6.

The way the Frtizbox works does not allow anything inside your network unless you specifically allow the port through in the fritz box user interface. It's done by interface address so you at least have to have a very basic understanding of IPv6 to even know what the interface address of a device is. Someone completed clueless in IPv6 is not likely to accidentally open up their network then.

NAT and firewalling are not the same thing.

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