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Default Gateway downtime

Posted on 2012-09-20
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Last Modified: 2012-09-21
Hello,

Tomorrow while no one is working I need to bring down our firewall that acts as our internal router and therefore is our default gateway.   What will this do to the network and servers that are running.   As I said no users will be working at this time and it will only be for about 5 minutes, but will I have to restart any servers or anything like that?

Thank you
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Question by:Tim Lewis
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Assisted Solution

by:_lobo
_lobo earned 750 total points
ID: 38418014
This may break some connections to the internet and maybe some mails will arrive delayed. It normally should not harm any service and does not need attention as it behaves like an internet downtime.

However, without knowing exactly what infrastructure you are using one can not answer fully your question.
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Accepted Solution

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Aaron Tomosky earned 750 total points
ID: 38418143
A gateway is only needed to cross a subnet boundry. So if your addresses are 192.168.0.x and mask is 255.255.255.0 then any packets to 192.168.0.1-255 don't need a gateway. They can run around your LAN just fine. When a packed is going outside that subnet, it goes to the gateway. Hope that clarified things
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Author Comment

by:Tim Lewis
ID: 38418165
Sounds good guys.  We run a 255.255.248.0 subnet and all the traffic is contained to 192.168.0.x -192.168.1.x.    I am not worried about internet access at that downtime.  I think we should be good.  Thanks.
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Expert Comment

by:Aaron Tomosky
ID: 38418378
If you don't run an internal DNS that would stop working. But you probably do so no worries
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Author Comment

by:Tim Lewis
ID: 38422955
It didn't affect anything running internally.  thanks.
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Expert Comment

by:Aaron Tomosky
ID: 38423021
Yay. It's nice when things work like planned.
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