Barracuda Networks NG Network Access Client SP4 Administrator's Manual page 12

Fig. 1–2 Client-Server actions during connection, health validation and assigning network access
Client connection
to server
Client collects and sends
user & system information
to Access Control Service
Automatic
revalidation
(configurable)
Health state change to
Access Ctrl Service sends
ACTION Get policy
attributes for Untrusted
attributes requested
and activated by client
Access according to
configured "Untrusted"
10 Introduction
User
Client
mode
Local
Machine
Yes
Matching
Identity?
exception
No Rule
Health state change to
Untrusted Unhealthy: Probation
Access Control Service sends
Untrusted policy
rights profile
Health state change
Health condition
matching
requirements?
No
No
Already in
probation?
Access Ctrl Service sends
probation actions ACTION Activate policy
to client attributes for Quarantine
Probation actions
executed by client
Access rights
remain unchanged
Server action Client action
User Information
Yes
Yes
Health state change to
Unhealthy: Restricted
Quarantine policy
attributes activated
by client
Restricted access
to Quarantine
network segment
Health state change to
Healthy
Access Ctrl Service sends
ACTION Get policy
attributes for Healthy
Healthy policy
attributes requested
and activated by client
Full access
according to
client profile