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School Guardian 5.0
Integrated Firewall
and Web Content Filtering Solution
School Guardian is the integrated
firewall and web content filtering solution that addresses the three
major problems faced by school and college networks: blocking unsuitable
web content, controlling access to Internet services and preventing
attackers from compromising private systems.
Dynamic Content Analysis is the key technology that makes School
Guardian so much more effective than other filtering products. All
requested web pages are scanned for words and phrases from numerous
categorised lists, including pornography, violence, drugs, racial
hatred and gambling. As matches are found a points count is incremented
until a configurable threshold is reached, whereupon the page is
blocked. Obviously thresholds can be adjusted according to the audience,
typically being set very low for young children, higher for senior
school students and adults. This technique works for every web page
in existence, regardless of whether it has ever been seen or categorised
before. The sheer size and growth of the web is rendering the traditional
blocklist technique of pre-categorising all web pages increasingly
unworkable, with Google indexing more than nine billion web pages
and another half a million new pages being added every day!
Effective as Dynamic Content Analysis is, School Guardian adds three
further layers of content protection:
Google and other Internet search engines can be forced to operate
in "safe search" mode, where they will not return search
results or images that are unsuitable for a young audience.
Pages are checked for the presence of PICS (Platform for Internet
Content Selection) codes, which allow the authors to indicate the
nature of the page content.
A large URL/domain/IP address blocklist. This is primarily used
to control access to time-wasting and "extra curricular"
web sites, such as chat rooms, game and news sites. Time-based controls
can be used to allow access to such websites outside of core hours.
School Guardian is not a "one size fits all" solution.
The standard lists and controls provided by SmoothWall can be supplemented
by locally maintained block and phrase list, allowing the filtering
behaviour of the system to be totally customised for local needs
and preferences. Multiple filtering policies can be configured to
suit the needs of different age ranges, academic and administrative
staff. School Guardian can be easily configured to temporarily allow
selective access for particular study purposes to sites that are
normally blocked.
When used in conjunction with a Microsoft Active Directory®
or other LDAP authentication system, School Guardian determines
the content filtering policy to apply based on the user identity.
Having authenticated the user, School Guardian parses the list of
Windows security groups of which the user is a member and selects
the appropriate security policy for their group membership. No routine
user management is required on the School Guardian system; this
being performed solely on the Windows 2000 or 2003 server.
The new malicious code detection features of School Guardian 4.0
detect and remove common in-page exploits from HTML web pages, such
as Active-X controls, Java Applets and Scripts. Such in-page exploits
are not recognised by traditional anti-virus software, yet are often
used to install spyware, viruses and Trojan horse software on user
PCs.
Peer to Peer (P2P) networks pose multiple threats to school networks.
Apart from the obvious likelihood of copyright violation from the
illegal download of music and video, most P2P networks are funded
by advertising and so it perhaps no surprise that they are notoriously
riddled with viruses, Trojan horse remote control programs, spyware
and other malicious code. P2P bandwidth utilisation is also a major
problem, yet most P2P networks are difficult to block, as they use
port agile software that can communicate with the P2P server over
any open IP port, defeating static IP port blocking. School Guardian
incorporates Deep Packet Inspection technology to identify and block
P2P traffic regardless of the communications port it attempts to
use.
School Guardian includes comprehensive reporting facilities to monitor
Internet usage. Numerous standard reports provide information in
both text and graphical formats on the most visited sites, attempted
access to blocked pages, user activity and bandwidth utilisation.
A "Drill down" mechanism allows any information to be
explored to a greater depth, for example, from a report of blocked
sites find which students have been attempting to access any particular
site.
The firewall component of School Guardian defends school systems
from outside attack, be that from the Internet at large or from
other schools/users on the same shared network. The firewall also
forms a major barrier to the spread of viruses and worms across
large shared networks. School Guardian totally isolates the student
network from the administrative network, preventing students from
being able to access administrative systems. The integrated web
proxy cache improves web performance and reduces bandwidth utilisation;
with frequently accessed web pages being retrieved from the local
proxy cache.
Installation, configuration or management of a School Guardian system
requires no expert knowledge of Internet security or networking;
everything is configured from a simple, intuitive web browser based
Graphical user Interface. School ICT staff or teachers can ensure
that their students remain safe from the perils of the Internet,
customise system behaviour to suit local circumstances and provide
management information to head teachers and governors.
Protect your students, your network and your school with SmoothWall
School Guardian, the cost-effective security solution that puts
you in control.
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