Security – Page 3

Installing and using Ettercap

Ettercap is a tool for analyzing computer network security.

Configuring ClamAV + Postfix

I will give an example of installing and configuring the free ClamAV antivirus for checking email messages for viruses.

Configuring Spamassassin + Postfix

I’ll give an example of installing and configuring Spamassassin to filter spam.

How to disable TLS 1.0 and TLS 1.1 in Nginx

The TLS 1.0 protocol appeared in 1999, TLS 1.1 in 2006, and they will both be considered obsolete in 2020, and will also have to be removed from support in various browsers around March 2020, so you need to disable them. Similarly, SSL 2.0, SSL 3.0 protocols were previously outdated.

Removing Ads from Browsers

You can block the display of ads from sites in almost all types of browsers by installing the Adblock Plus add-on

Installing and configuring fprobe

On the test, I will install the fprobe sensor, which will collect statistics from network interfaces and transmit it to the collector.

Installing and using hping

hping is a free packet generator and analyzer, well suited for testing the security of network devices.

Installing and using fcrackzip on Linux

fcrackzip is a program for recovering passwords from zip archives.

How to catch flood on Huawei MA5600

Once, on the port of one of the L3 switches of the Cisco 6509e, to which the Huawei MA5683T was connected, I saw that Multicast traffic increased very much, while the CPU load of the switch processor increased by 30%.

Installing and using chkrootkit on Linux

Chkrootkit (check rootkit) – a tool for finding rootkits (malicious applications) in the operating system.