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Chapter 13. Network Diagnostic Tools
Various network diagnostic tools are provided by the FB6000, accessible through either the web user interface
or the CLI :-
• Packet dump : low level diagnostics to for detailed examination of network traffic passing through the
FB6000
• Ping : standard ICMP echo request/reply ping mechanism
• Traceroute : classical traceroute procedure - ICMP echo request packets with increasing TTL values,
soliciting "TTL expired" responses from routers along the path
• Access check : check whether a specific IP address is allowed to access the various network services
described in Chapter 12
Each tool produces a textual result, and can be accessed via the CLI, where the same result text will be shown.
Caution
The diagnostic tools provided are not a substitute for external penetration testing - they are intended
to aid understanding of FB6000 configuration, assist in development of your configuration, and for
diagnosing problems with the behaviour of the FB6000 itself.
13.1. Access check
For each network service implemented by the FB6000 (see Chapter 12), this command shows whether a specific
IP address will be able to access or utilise the service, based on any access restrictions configured on the service.
For example, the following shows some service configurations (expressed in XML), and the access check result
when checking access for an external address,
1.2.3.4
:-
<http local-only="false"/>
Web control page access via http:-
This address is allowed access to web control pages subject to
username/password being allowed.
<telnet allow="admin-ips"
local-only="false"/>
Telnet access:-
This address is not allowed access due to the allow list on telnet
service.
(in this example,
admin-ips
is the name of an IP address group that does not include
1.2.3.4
)
<dns local-only="true"/>
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