Application / Blog / C / C++ / CISSP / Linux / Programming / Security / System / Windows
by İsmail Baydan · Published 27/12/2018 · Last modified 25/12/2018
C and C++ programming languages provide rand() and srand() functions in order to create random numbers. Random numbers can be used for security, lottery etc. In this tutorial we will learn how to use a random number generating functions rand() and srand() with their attributes and specialties. Random Numbers Random numbers...
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by İsmail Baydan · Published 26/12/2018 · Last modified 24/12/2018
MD5 is a checksum or hash calculation method for files. MD5 checksum consists of 128-bit value which is generally expressed as the hexadecimal format with which consist of 32 characters. MD5 Attributes MD5 is a cryptography algorithm which provides some attributes which make it useful for different cases like security, operation...
27001 / Application / Blog / CISSP / Linux / Linux / Network / Security / Windows
by İsmail Baydan · Published 18/12/2018 · Last modified 17/12/2018
Certificates like SSL, X.509 are used to secure network traffic. But every certificate has its own life cycle in a distributed environment like the internet we should manage them. Online Certificate Status Protocol aka OCSP is used to manage certificates validity and lifecycle. OCSP standard is defined in RFC 6960 with...
27001 / Application / Blog / CISSP / Linux / Security / Windows
by İsmail Baydan · Published 13/12/2018
Common Name or CN is generally used in SSL Certificates. CN is used to define the server name which will be used for secure SSL connection. Generally this SSL certificate used to secure connection between a HTTP/S server and client browser like Chrome, Explorer, Firefox. Common Name (CN) Common Name...
Blog / CentOS / Fedora / Linux / Linux / RedHat / Security / System
by İsmail Baydan · Published 10/12/2018
Rpm is very popular and secure package management format and application. Recent version of the rpm and yum command uses Public Key Check in order to make installation more secure. This is done by checking integrity of the rpm package. NOKEY Error We generally see the error during a package...
27001 / Application / Blog / CISSP / Linux / Linux / Security
by İsmail Baydan · Published 09/11/2018 · Last modified 09/05/2019
Anonymity and Privacy are important topics of this decade. A lot of states, companies or persons try to crack or censorship peoples anonymity and privacy. There are different ways to protect us from these attacks. Tail OS is a Linux based distribution which provides these protections as a Live operating...
Blog / CCNA / CCNP / CentOS / Debian / Fedora / Kali / Linux / Linux / Linux / Mint / Network / Network / Pentest / RedHat / Security / Security / Switching / System / Ubuntu / Windows / Windows / Windows / Windows 10 / Windows 7 / Windows 8 / Windows Server / Windows Server 2008 / Windows Server 2012 / Windows Server 2016
by İsmail Baydan · Published 10/10/2018
Zenmap is an free and open source GUI designed to be used with nmap . Zenmap is multiplatform tool which supports Linux, Ubuntu, Mint, Kali, Fedora, CentOS,.. , Windows, Mac OS X, BSD etc. . nmap is very powerful tool for network scanning and vulnerability discovery but it is completely command line based....
27001 / Blog / CentOS / Debian / Fedora / Kali / Linux / Linux / Mint / RedHat / Security / System / Ubuntu
by İsmail Baydan · Published 16/09/2018
Linux distributions like Ubuntu, Debian, Mint, Kali, Fedora, CentOs, RHEL are considered as virus free and advertised by open source advocates. This is a bit false but generally true assumption. Linux environment have very little viruses against Windows and MacOS. But Linux environment is not fully secure against. In this...
Blog / CCNA / CentOS / Debian / Fedora / Kali / Linux / Linux / Linux / Mint / Network / Network / Pentest / RedHat / Security / Security / Ubuntu
by İsmail Baydan · Published 06/09/2018
masscan is an alternative tool to the popular nmap . Actually masscan provides very less of the nmap but provides some huge adventages. masscan is designed to be fast and performative. nmap have popular feautre named top ports which option is –top-ports to scan specified number of most popular ports. masscan also provides this options...
Blog / CentOS / Debian / Fedora / Kali / Linux / Mint / RedHat / Security / Ubuntu
by İsmail Baydan · Published 05/09/2018 · Last modified 31/01/2019
Curl is a command line tool and library which implements protocols like HTTP, HTTPS, FTP etc. Curl also supports HTTPS protocol which is secure version of the HTTP. Using curl may create some problems. We will examine how to solve these curl HTTPS related problems. Install Curl We will start...
