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USER MANUAL
Peplink Balance Series
-106 / 234 -
Copyright © 2014 Peplink
15.1
Outbound Policy
There are three main selections for the outbound traffic policy:
High Application Compatibility
Normal Application Compatibility
Custom
Outbound Policy Settings
High Application
Compatibility
Outbound traffic from a source LAN device is routed through the same WAN connection
regardless of the destination Internet IP address and protocol. This option provides the
highest application compatibility.
Normal
Application
Compatibility
Outbound traffic from a source LAN device to the same destination Internet IP address will
be routed through the same WAN connection persistently, regardless of protocol. This
option provides high compatibility to most applications, and users still benefit from WAN link
load balancing when multiple Internet servers are accessed.
Custom
Outbound traffic behavior can be managed by defining rules in a custom rule table. A
default rule can be defined for connections that cannot be matched with any of the rules.
The default policy is
Normal Application Compatibility
.
Tip
Want to know more about creating outbound rules? Visit our
YouTube Channel
for a video tutorial!
http://youtu.be/rKH4AS_bQnE
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USER MANUAL
Peplink Balance Series
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Copyright © 2014 Peplink
15.2
Custom Rules for Outbound Policy
Click
in the
Outbound Policy
form. Choose
Custom
and press the
Save
button. The following
screen will then be displayed:
The bottom-most rule is
Default
.
Edit this rule to change the device’s default
manner of controlling
outbound traffic for all connections that do not match any of the rules above it. Under the
Service
heading,
Default
to change these settings. To rearrange the priority of outbound rules, drag and drop them into the
desired sequence.
By default,
Auto
is selected for as the
Default Rule
. You can select
Custom
to change the algorithm to
be used.
Please refer to the upcoming sections for the details on the available algorithms.
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USER MANUAL
Peplink Balance Series
-108 / 234 -
Copyright © 2014 Peplink
To create a custom rule, click
Add Rule
at the bottom of the table. The following window will be displayed:
New Custom Rule Settings
Service Name
This setting specifies the name of the outbound traffic rule.
Enable
This setting specifies whether the outbound traffic rule takes effect. When
Enable
is
checked, the rule takes effect: traffic is matched and actions are taken by the Peplink
Balance based on the other parameters of the rule. When Enable is unchecked, the rule
does not take effect: the Peplink Balance disregards the other parameters of the rule.
Source
This setting specifies the source IP address, IP network, or MAC address for traffic that
matches the rule.
Destination
This setting specifies the destination IP address, IP network, or domain name for traffic that
matches the rule.
If
Domain Name
is chosen and a domain name, such as foobar.com, is entered, any
outgoing accesses to
foobar.com
and
*.foobar.com
will match this criterion. You may enter
a wildcard (.*) at the end of a domain name to match any host with a name having the
domain name in the middle. If you enter
foobar.*,
for example,
www.foobar.com
,
www.foobar.co.jp
, or
foobar.co.uk
will also match. Placing wildcards in any other position is
not supported.
NOTE: if a server has one Internet IP address and multiple server names, and if one of the
names is defined here, accesses to any one of the server names will also match this rule.
Protocol and Port
This setting specifies the IP protocol and port of traffic that matches this rule. You may
select common protocols from the
Protocol Selection Tool
drop-down menu.
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USER MANUAL
Peplink Balance Series
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Copyright © 2014 Peplink
Algorithm
This setting specifies the behavior of the Peplink Balance for the custom rule.
One of the following values can be selected:
Weighted Balance
Persistence
Enforced
Priority
Overflow
Least Used (not applicable to Balance 20/30/30 LTE/50)
Lowest Latency (not applicable to Balance 20/30/30 LTE/50)
The upcoming sections detail the listed algorithms.
Terminate Sessions
on Link Recovery
This setting specifies whether to terminate existing IP sessions on a less preferred WAN
connection in the event that a more preferred WAN connection is recovered. This setting is
applicable to the
Weighted, Persistence
, and
Priority
algorithms.
By default, this setting is disabled. In this case, existing IP sessions will not be terminated
or affected when any other WAN connection is recovered. When this setting is enabled,
existing IP sessions may be terminated when another WAN connection is recovered, such
that only the preferred healthy WAN connection(s) is used at any point in time.
15.2.1 Algorithm: Weighted Balance
This setting specifies the ratio of WAN connection usage to be applied on the specified IP protocol
andport. This setting is applicable only when
Algorithm
is set to
Weighted Balance
.
The amount of matching traffic that is distributed to a WAN connection is proportional to the weight of the
WAN connection relative to the total weight.
Use the sliders to change each WAN’s weight.
For example, with the following weight settings on a Peplink Balance 310:
WAN1:
10
WAN2:
10
WAN3:
5
Total weight is 25 = (10 + 10 + 5)
Matching traffic distributed to WAN1 is 40% = (10 / 25) x 100%
Matching traffic distributed to WAN2 is 40% = (10 / 25) x 100%
Matching traffic distributed to WAN3 is 20% = (5 / 25) x 100%
15.2.2 Algorithm: Persistence
The configuration of persistent services is the solution to the few situations where link load distribution for
Internet services is undesirable. For example, for security reasons, many e-banking and other secure
websites
terminate the session when the client computer’s Internet IP address changes mid
-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
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USER MANUAL
Peplink Balance Series
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Copyright © 2014 Peplink
address change.
The Peplink Balance 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 the Peplink Balance may communicate using multiple Internet IP
addresses. For example, a LAN client computer behind a Peplink Balance 310 with three WAN
connections may communicate on the Internet using three different IP addresses.
With the Persistency feature of Peplink Balance, 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 using one IP address, eliminating the issues mentioned above.
There are two persistent modes:
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 loads
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
in
Load Distribution
, the weights will be automatically adjusted according to
each WAN’
s
Download Bandwidth
, which is specified in the WAN Settings page (see section 12
Configuring the WAN Interface(s)
). If you choose
Custom
, you can customize the weight of each WAN
manually using the provided sliders.
15.2.3 Algorithm: Enforced
This setting specifies the WAN connection usage to be applied on the specified IP protocol and port. This
setting is applicable only when
Algorithm
is set to
Enforced
.
Matching traffic will be routed through the specified WAN connection, regardless of the health check
status of the WAN connection.
Starting from Firmware 5.2, outbound traffic can be enforced to go through a specified SpeedFusion
TM
connection.
(Available on the Peplink Balance 210+ and MediaFast 200+)

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