Extreme Networks EPICenter 6.0, Справочное руководство

Страница: 492 / 580

Using the Policy Manager
EPICenter Reference Guide
492
c Cancel closes the Edit window and abandons any changes you’ve made to the Current Policy
Endpoints list.
8 For a VLAN or Source Port policy: Your next step is to define the Policy Scope. Skip to Step 11 on
page 493 for instructions on specifying a scope for your policy.
9 Traffic direction for a Security or an IP policy: You must indicate whether this policy should affect
traffic flowing only in one direction between the endpoints, or whether it should affect traffic in both
directions. The directional selection buttons do not appear if you are creating VLAN or Source Port
endpoints.
Click the appropriate button to indicate the traffic flow directions to which this policy should be
applied (for IP policies, substitute server for network resource and substitute client for user):
●
The top button ( - - > ) indicates that this policy should apply only to traffic flowing from the
network resource (left-side) endpoints to the user (right-side) endpoints. The network resource
endpoints will be considered the source, and the user endpoints will be considered the
destination in the access list rules created from this policy.
●
The middle button ( < - - ) indicates that this policy should apply only to traffic flowing from the
user (right-side) endpoints to the network resource (left-side) endpoints. The user endpoints will
be considered the source, and the network resource endpoints will be considered the destination
in the access list rules created from this policy.
●
The bottom button ( < - - > ) indicates that this policy should apply to all traffic flowing between
the user (right-side) endpoints and the network resource (left-side) endpoints, in either direction.
10 Server service and L4 ports for a Security or an IP policy: You may indicate a protocol service and
L4 (layer 4) ports that should be used as a filter when looking for traffic that matches the access list
criteria. You can specify this information by selecting a protocol and entering the L4 port numbers,
or you can select a predefined service or application that the policy server can translate to a protocol
and one or more L4 ports or you can use a group of the Custom Applications type. When using the
latter, you can group different types of ports as well as non-contiguous groups of ports.
●
The default is “IP Any” which specifies layer 3 traffic.
●
Specification of L4 ports for the client endpoints is optional.
●
These fields do not appear if you are creating VLAN or Source Port policies.
Figure 255 shows the portion of the Policy Definition window where you can make these selections.
This illustration shows the minimum specification if you select a service that translates to a port (or
set of ports) known to the EPICenter policy server.
Figure 255: Service and port selection area for a Security or an IP policy—basic specification
a To specify a service, select one from the drop-down list provided, as shown in Figure 256 .