Re: Failover internet connections, and implementation...

[VM <vmemaillist () gmail com>]

Compare those costs to the cost of the service outage.  Your business  
will dictate how long of an outage it can sustain.  Don't forget to  
include the expense to restore service such as possibly the cost for  
a technician and associated costs as travel time and expenses.

On Oct 23, 2007, at 2:18 PM, Dan Denton wrote:

> I've a question about failover internet connections. I'm  
> interesting in
> knowing what kind of implementations that other SMB's use for  
> redundancy,
> and to switch to in the case of a DOS attack.
>
> Do any of you have redundant highspeed internet connections for  
> your offices
> (versus those for datacenters)? If so, what kind of setup do you have?
>
> Here's the setups I'm considering...
>
> 1. Have a second cable modem/dsl modem active, but not hooked into the
> network. In the event of a failure, move the connection for perimeter
> devices over to the standby connection and reconfigure the  
> perimeter device
> to use a different IP.
>
> 2. Have a second set of perimeter devices (firewalls) programmed to  
> use the
> IP's on the second connection, as a hot standby.
>
> My problem with the first option is the time it would take to  
> reconfigure
> firewalls and IDS' to use the other ISP's connection. The problem I  
> have
> with the second is the expense of firewalls and IDS' just sitting  
> there
> idle.
>
> Any input is greatly appreciated!
>
>
> Dan