24 Hours Of Exchange Server 2007 ( Part 13 Of 24)
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This document discusses maintaining anti-spam systems in Exchange Server 2007. It covers understanding anti-spam functionality through deploying a defense-in-depth approach and configuring the various anti-spam components. These components include connection filtering, sender filtering, sender ID filtering, content filtering, and sender reputation filtering. It also discusses deploying the Edge Transport server and configuring internet message delivery.
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![24 Hours of Exchange Server 2007 (Part 13 of 24): Maintaining Anti-Spam Systems Harold Wong [email_address] blogs.technet.com/haroldwong Audio: please try Streaming Internet Audio first If that doesn’t work, use: (800) 618-7506: Pin 5800](https://image.slidesharecdn.com/24-hours-of-exchange-server-2007-part-13-of-24-1206387293455718-4/85/24-Hours-Of-Exchange-Server-2007-Part-13-Of-24-1-320.jpg)
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Chapter 14 Overview
Fundamentals of internet service, notably email
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Internet Services
Software that provides Layer 7 services
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Internet Email
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MIME Formatting
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Email Protocols
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MAPI – Microsoft's Message API (Exchange)
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Headers from the Suspect Email
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Spam
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Email viruses
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MIME provides a way to embed non-ASCII encoding in an email message
Embeds images or complex documents
Formats messages using Web-style markup
Includes encrypted data or digital signatures
Email Protocols
Two Types of Protocols
Mailbox protocols – let a client program retrieve email from a server
POP3 – a simple and popular protocol
IMAP – a more elaborate protocol
MAPI – Microsoft's Message API (Exchange)
Delivery protocols – transmit an email to another server for delivery to its destination
Typically Simple Mail Transfer Protocol: SMTP
Tracking an Email: Servers
Tracking an Email: Headers
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Email Security Problems
Connection-based attacks
Large-scale sniffing risks
Many sites use SSL to encrypt email traffic
Spam
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Phishing
Email that tries to retrieve authentication data
Email viruses
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Spam, Spam, Spam, Spam, Spam
A huge problem
Unsolicited email wastes bandwidth, server storage space, server compute cycles
Typical spam involves fraudulent or illegal activities, or products not accepted in normal advertising channels
Frauds
Advance fee fraud
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Spam Prevention and Control
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Whitelists – lists of email servers that actively avoid handling spam
Blacklists – email servers that carry spam
Identify spam by pattern and filter it out
Binary matching – looks for an exact match with specific features
Statistical matching – calculates likelihood that an email is spam; filters on relative scores
Phishing
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Due date:
Week 6, 14th April
ASSESSMENT
Weighting:
80%
1
Length:
N/A
Question 1 (5 marks)
Note: for this question, you need to download a PCAP file located in the course Moodle web site.
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This document provides an overview of Forefront Protection for Office, which includes solutions for securing messaging, collaboration portals, and management of security servers. It discusses the key capabilities of Forefront Protection for Exchange, Forefront Protection for SharePoint, and the Forefront Server Security Management Console. These solutions provide layered defenses through multiple antivirus engines and filters to protect against viruses, spam, and inappropriate content across Microsoft Exchange and SharePoint environments.
Bank World 2008 Kamens 04 29 08
The document summarizes an IT audit presentation given by Michael Kamens and Joshua Neffinger for banks. It discusses secrets to a successful IT audit, vendor selection, common vulnerabilities, hacking dos and don'ts, and analyzing vulnerabilities. Standardized naming systems like CVE and CVSS are important for accurately communicating vulnerability severity levels. Sample vulnerabilities are provided to demonstrate how these systems work.
Real-Time-Communications Security-How to Deploy Presence and Instant Messagin...
Presence- und Instant-Messaging-Programme wie AOL Instant Messenger sowie ICQ, Microsoft Messenger und Yahoo Messenger erfreuen sich einer stark steigenden Nutzung – insbesondere auch am Arbeitsplatz. Deren Nutzung führt jedoch zu erheblichen Bedro-hungsszenarien für die Unternehmenssicherheit. Richtig eingesetzt können IT-basierte Echt-zeitkommunikationssysteme jedoch signifikante Effizienzpotenziale für Unternehmen er-schließen.
Daher ist die Realisierung geeigneter Lösungsarchitekturen von zentraler Bedeutung bei der Einführung von IT-basierten Echtzeitkommunikationsdiensten in Unternehmensnetzen. Die-ser Vortrag erörtert die gegebenen Bedrohungen, untersucht Gegenmaßnahmen und skiz-ziert Architekturen für die sichere Nutzung solcher Dienste.
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Partecipate alla presentazione per immergervi in una storia di interoperabilità, standard e formati aperti, per poi discutere del ruolo importante che i contributori hanno in una comunità open source sostenibile.
BIO: Sostenitrice del software libero e dei formati standard e aperti. È stata un membro attivo dei progetti Fedora e openSUSE e ha co-fondato l'Associazione LibreItalia dove è stata coinvolta in diversi eventi, migrazioni e formazione relativi a LibreOffice. In precedenza ha lavorato a migrazioni e corsi di formazione su LibreOffice per diverse amministrazioni pubbliche e privati. Da gennaio 2020 lavora in SUSE come Software Release Engineer per Uyuni e SUSE Manager e quando non segue la sua passione per i computer e per Geeko coltiva la sua curiosità per l'astronomia (da cui deriva il suo nickname deneb_alpha).
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The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
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Bob Boule
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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Removing Uninteresting Bytes in Software Fuzzing
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24 Hours Of Exchange Server 2007 ( Part 13 Of 24)
- 1. 24 Hours of Exchange Server 2007 (Part 13 of 24): Maintaining Anti-Spam Systems Harold Wong [email_address] blogs.technet.com/haroldwong Audio: please try Streaming Internet Audio first If that doesn’t work, use: (800) 618-7506: Pin 5800
- 11. Exchange Server 2007 Anti-Spam Functionality Connection filtering Sender filtering Recipient filtering Sender ID filtering Content filtering Sender reputation filtering Attachment filtering Outlook junk e-mail filtering
- 12. Anti-Spam Mail Flow Connection filtering Sender and recipient filtering Sender ID filtering Content filtering Outlook junk e-mail filtering
- 13. The Defense-in-Depth Approach Perimeter Firewall Edge Transport Server Interior Firewall Hub Transport Server Mailbox Server Client Access Server Outlook E-mail Filtering
- 18. Connection Filtering Yes Yes No Yes Yes IP allow list IP block list Safe provider list RBL No No No
- 19. Sender and Recipient Filtering Delete message Reject via SMTP Yes Yes On sender filter list On recipient block list No No
- 20. Sender ID Filtering Delete message Filter message No Yes No From blocked domain Allow sender ID failed On blocked sender list Yes No Yes Query SPF on sender’s DNS DNS
- 21. Content Filtering Delete message Reject via SMTP Send to spam quarantine mailbox Microsoft update No No Yes Yes SCL exceeds deletion SCL exceeds rejection No Apply content filter Assign SCL rating Yes SCL exceeds quarantine Safelist Aggregation
- 23. Exchange Server Hosted Filtering Illegitimate senders Spam quarantine Directory service Exchange hosted filtering
- 24. Other Strategies and Techniques Sender reputation filtering Attachment filtering Spam quarantine Outlook junk e-mail filtering