1-15
Figure 1-9
AUX cable
Table 1-18
AUX cable connector pinouts
RJ-45
Signal direction
DB-25
DB-9
Signal
1
Æ
4 7 RTS
2
Æ
20 4 DTR
3
Æ
2 3 TXD
4
Å
8 1 DCD
5 — 7 5 GND
6
Å
3 2 RXD
7
Å
6 6 DSR
8
Å
5 8 CTS
For how to connect the AUX cable, refer to the section talking about connecting the AUX Cable to a
modem in Chapter 4 “Installing the Firewall.”
Management Ethernet port/HA port
The management Ethernet port is a 10Base-T/100Base-TX/1000Base-T RJ-45 auto-sensing interface.
It allows you to upgrade software and manage the device through a network management server,
without using any service interface of the device. The management Ethernet port is only for managing
the device and has no service processing capabilities such as data forwarding.
The high availability (HA) feature is mainly delivered through stateful failover and VRRP. The HA port is
a 10Base-T/100Base-TX/1000Base-T RJ-45 auto-sensing interface, which is used for synchronizing
link state packets in a dual-system network.