X4000
User’s Guide
237
Settings Specific to WAN Partners
8
off. As it is not possible to determine whether the hosts can be reached until the
connection is set up, costs are incurred by the calling party, i.e. the head office.
Figure 8-3:
Keepalive Monitoring
Cutting costs
The Keepalive Monitoring function enables you to configure
X4000
in the
branch office so that unnecessary WAN connections from the head office to the
branch office are avoided.
X4000
checks at regular, adjustable intervals to see
whether the hosts to be monitored in the LAN at the branch office can be
reached. If none of the hosts to be checked answers a corresponding request
after three consecutive attempts, connection setup by the central server is
prevented by
X4000
deactivating the interface to the "head office" WAN partner.
The result is that the line to the branch office appears to be busy if the central
server at head office attempts to set up a connection. This means that no costs
are incurred for a connection, which would have been useless anyway.
B
IA
N
C
A
/B
R
IC
K
-X
M
WAN
LAN IP
192.168.1.254
LAN IP
10.1.1.1
X4000
Bin
Tec
4000
192.168.1.10
Group 0
192.168.1.20
Group 0
2
1
Headquarters
Branch Office
Headquarters
Router
Central Server
No Host
reachable!
Reachable?
Reachable?
1
Connection setup attempt
2
X4000
is "busy", no
connection is possible
Summary of Contents for X4000
Page 4: ...4 X4000 User s Guide...
Page 6: ...6 X4000 User s Guide Table of Contents...
Page 14: ...14 X4000 User s Guide Table of Contents...
Page 30: ...30 X4000 User s Guide Welcome 1...
Page 34: ...34 X4000 User s Guide General Safety Precautions 2...
Page 68: ...68 X4000 User s Guide Hardware Description and Installation 3...
Page 92: ...92 X4000 User s Guide Configuration Requirements 4...
Page 118: ...118 X4000 User s Guide Fast Configuration with the Configuration Wizard Basic Unit 6...
Page 362: ...362 X4000 User s Guide Configuration of Security Functions and Firewall 10...
Page 374: ...374 X4000 User s Guide Configuration Management 11...
Page 386: ...386 X4000 User s Guide Troubleshooting 12...
Page 433: ...X4000 User s Guide 433 15...
Page 449: ...X4000 User s Guide 449 15...
Page 468: ...468 X4000 User s Guide General Safety Precautions in 15 Different Languages 15...
Page 496: ...496 X4000 User s Guide Index...
Page 498: ...498 X4000 User s Guide Document 71000L Version1 3...