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14.2.2 Algorithm: Persistence
The Persistencealgorithm is the solution to the few situations where link load distribution for Internet
services is undesirable.
For example,many e-banking and other secure websites, for security reasons, terminate the session
when the client computer’s Internet IP address changes during the session.
In general, different Internet IP addresses represent different computers. The security concern is that an
IP address change during a session may be the result of an unauthorized intrusion attempt. Therefore, to
prevent damages from the potential intrusion, the session is terminated upon the detection of an IP
address change.
The Pepwave MAX can be configured to distribute data traffic across multiple WAN connections. Also,
the Internet IP depends on the WAN connections over which communication actually takes place. As a
result, a LAN client computer behind thePepwave MAX may communicate using multiple Internet IP
addresses. For example, a LAN client computer behind a Pepwave MAX with three WAN connections
may communicate on the Internet using three different IP addresses.
With the algorithm Persistence of the Pepwave MAX, rules can be configured to enable client computers
to persistently utilize the same WAN connections for e-banking and other secure websites. As a result, a
client computer will communicate with the other end using one IP address and eliminate the issues.
There are two modes for Persistence:
By Source
and
By Destination
.
By Source
The same WAN connection will be used for traffic matching the rule and originating
from the same machine regardless of its destination. This option will provide the
highest level of application compatibility.
By Destination
The same WAN connection will be used for traffic matching the rule, originating
from the same machine, and going to the same destination. This option can better
distribute load to WAN connections when there are only a few client machines.
The default mode is
By Source
.
When there are multiple client requests, they can be distributed (persistently) to WAN connections with a
weight. If you choose
Auto
for
Load Distribution
, the weights will be automatically adjusted according to
each WAN’s Downstream Bandwidth which is specified in the WAN settings page (see Section
8.2Captive Portal
The Captive Portal serves as gateway that clients have to pass if they wish to access the internet using
your router. To configure, navigate to
Network >Captive Portal
to see the following screen:
