Misgav Industrial Park, POB 60, D.N. Misgav 20174, Israel
Tel: +972-4-9951999; Fax: +972-4-9990287
PM0622.07 – Blue Steel CXT3000/CXT4000 CompletePBX Getting Started Guide (electronic version)
Page
4
of
6
defined.
Now you can modify your CXE2000/CXE3000 CompletePBX configuration. See the
CompletePBX Reference Guide
Step 5: Protect CompletePBX Against Unauthorized Access
Once you have
fully
configured
CompletePBX we highly recommend that you use the following
procedures and applications supported in CompletePBX to protect it against unauthorized access:
Change the Linux Password
The password for the Linux root user can be changed by using the Linux
passwd
command.
IP Protection
CompletePBX must be installed on a protected LAN and must not be directly connected to the
public Internet. The LAN must be protected by a Firewall/NAT router.
Intrusion Detection (fail2ban) and Firewall
In order to maximize protection from external threats, the
fail2ban
process is activated, in
addition to the internal firewall. Use the Admin|Security|Firewall and Admin|Security|Intrusion
Detection dialogs to modify the internal firewall and intrusion detection settings.
Unit Status LED (Light Emitting Diode) Indicators
The Blue Steel CXT3000/CXT4000 is equipped with varying LED indicators on the front panel.
Digital Blue Steel CXT3000/CXT4000 Models
These are models that have at least one digital PSTN port – ISDN BRI or PRI. They have a
vertical array of four status indicators on the left side of the front panel (
Fig 2
).
Fig. 2 – BRI/PRI Panel (allows up to additional 24 FXS ports)
LED Label Indication
PHONE
This yellow LED indicates that the Blue Steel CXT3000/CXT4000 is supplying the
necessary voltage for analog or ISDN telephone sets.
SYNC
This green LED is the synchronization. It blinks once the Blue Steel
CXT3000/CXT4000 is synchronized with the telephony modules.
ACTIVE
This red LED lights up when at least one PSTN / Analog phone is active.
ON
This green LED lights up when the Blue Steel CXT3000/CXT4000 is powered.