Capture File Filtering with Wireshark Reading a packet capture file with Wireshark and tshark

Aug 23, 2012

Wireshark doesn’t just work in real time. If you save a history of network activity in a pcap file using a tool such as tcpdump, you can filter the data with Wireshark to search for evidence.

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Side Channel Attacks Some web applications send unnecessary information to attackers

Aug 23, 2012

Sometimes error messages or log entries are too verbose for their own good, disclosing valuable information to attackers.

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OpenVAS The OpenVAS vulnerability scanner

Aug 23, 2012

The more IT infrastructure complexity increases, the more indispensable vulnerability scanners become. If you are not interested in retaining the consulting services of a professional hacker, you might want to entrust the task of detecting vulnerabilities to a specialized software tool, such as OpenVAS.

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Security Lessons: Database Security Protecting your database

Aug 23, 2012

Your database can be one of the most vulnerable elements in your organization. We share some tips for detecting and preventing attacks.

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HTTPS Proxy Using a Squid proxy with HTTPS

Aug 23, 2012

How do you monitor the network when your client systems are connecting to secure web servers through HTTPS? We’ll show you how to keep watch using the Squid proxy server and share some inventive certificate tricks.

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Table of Contents: 143 Intrusion Prevention

Aug 23, 2012

New vulnerabilities appear every day. To keep your network safe, you need to think like an attacker.

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Intrusion Detection with fail2ban

May 22, 2012

For its size, fail2ban, a utility that scans logfiles and bans suspicious IP addresses, punches well above its weight.

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Customizing PortSentry Do you have a sentry to keep an eye on your servers?

Apr 24, 2012

PortSentry monitors your ports and lets you know when they’ve been scanned.

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Issue 19: Linux Shell Handbook 5th Ed./Special Editions

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