CASE STUDY: Outbound Spam Guard

CASE STUDY: Outbound Spam Guard
THE OUTBOUND SPAM GUARD IS DEPLOYED TO PROTECT THE IP REPUTATION OF SOME OF THE REGION’S
LARGEST NETWORKS INCLUDING: BSNL, TELECOM OF THAILAND, LANKABELL AND SRI LANKA TELECOM
LARGE REGIONAL CUSTOMERS
ORGANIZATIONS

Bharat Sanchar Nigam Limited (BSNL)
Many of Asia’a largest Service Provider networks are utilizing the

ACT Telecom (formerly Beam)
Outbound Spam Guard to protect their networks against botnet

Lanka Bell

Sri Lanka Telecom
users that has recently turned to CYBONET for outbound spam

Telecom of Thailand (TOT)
protection. Service Providers with networks of such proportions
attacks and maintain their IP integrity. For instance Bharat Sanchar
Nigam Limited (BSNL) is an Indian Telecom with over 93 million
are increasingly vulnerable to attacks on their IP reputation.
CHALLENGES

Reduce spam that leaves network .
Remove IP addresses from blacklists
With the steady expansion of broadband services throughout the
(RBLs) like UCEPROTECT
region, Service Providers are becoming increasingly encumbered

Reduce bandwidth consumption

Reduce

customer
complaints
by spam that is originating from their networks. A large percentage
of subscribers’ PCs are becoming controlled by botnets that
of
computers to send spam. Botnets have the potential to infect a
Strengthen brand reputation
large percentage of computers in a Service Provider network and
use those IP addresses to distribute massive quantities of spam. IT
industry analysts agree that over 90% of all email spam is

Outbound Spam Guard

Reduce

operate by infecting computers with malware and then using those
emails not being delivered
THE SOLUTION

THE CHALLENGE
spam
from
generated and distributed by botnets. In some networks there are
leaving
the
periods where close to 99% of all outbound email can be classified
network
as botnet spam.
Carrier-grade solution can process
As a consequence of such high spam levels, DNS blacklist providers
billions of SMTP sessions daily
can blacklist infected IP address pools to their lists. This results in
Transparent
Solution
does
interfere with service to customers
not
email messages from these Service Provider networks are blocked
by receiving ISPs.
OFF THE BLACKLISTS
Within one week of deploying
CYBONET’s Outbound Spam Guard,
UCEPROTECT, a service that identifies
networks with high spam/botnet infections, changed TOT’s classification from
a MAJOR LISTED Spamming Network to
a NOT LISTED network.
SOLUTION REQUIREMENTS
In order to meet the needs of Asia’s largest Service Provider
networks, an anti-blacklisting solution must fulfill some very specific
requirements:
Reduce IP Abuse: The Solution must ensure that Service Provider IP
addresses are removed from DNS blacklists
Carrier‐Grade Solution: The Solution must be able to handle email
traffic of billions of messages a day
Transparent Solution:
The Solution must stop spam without
impacting legitimate customer service–a traditional mail gateway/
anti‐spam solution is much too intrusive
Reduce Bandwidth Consumption: The Solution must reduce the
total bandwidth being consumed by spam
DEPLOYMENT SPOTLIGHT: TELECOM OF THAILAND (TOT)
The Outbound Spam Guard (OSG) was installed in the TOT network
directly behind the backbone router. By using Policy Based Routing
to route non-symmetric SMTP traffic to the OSG, TOT was able to
quickly and easily integrate the Solution within their network.
Results after deployment included:
Massive Reduction of Spam Leaving Network: Within hours of
deploying the OSG Solution the total volume of emails leaving the
TOT network was reduced by 98%.
Removal of IPs from Blacklists: Within one week, and before even
full implementation of the solution across the entire network, the
OSG reduced the number of known spammers in the TOT network
and effectively removed TOT from several major IP blacklists.
Reduction in Customer Complaints: TOT was able to effectively
reduce the number of customer complaints related to undelivered
emails. Furthermore, with the in depth statistics that the OSG
Solution provides, TOT network engineers were able to pinpoint
which subscriber’s had become infected by botnets and were able
to begin to proactively clean their network.
CYBONET |
p. +1.646.883.3455
|
e. info@cybonetcom
|
www.cybonet.com
©2016 CYBONET, Ltd., All Rights Reserved. Reproduction in whole or in part in any form or medium without express written permission is prohibited. CYBONET and the CYBONET logo
are registered trademarks. CYBONET believes that the information in this publication is accurate as of its publication date; such information is subject to change without notice.