See rfc2821 for the basic specification of SMTP; see also rfc1123 for important additional information. See rfc1893 and rfc2034 for information about enhanced status codes. Check the RFC index for further mail-related RFCs. Reply codes in numerical order Code Meaning 200 (nonstandard success response, see rfc876) 211 System status, or system help reply 214 Help … Read More “SMTP reply codes” »
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What is an SSL certificate? SSL stands for Secure Sockets Layer, a global standard security technology that enables encrypted communication between a web browser and a web server. It is utilized by millions1 of online businesses and individuals to decrease the risk of sensitive information (e.g., credit card numbers, usernames, passwords, emails, etc.) from being … Read More “SSL Certificate” »
Hello all Yesterday, my website faced a SYN flood attack, which is a proper pain in the backside and you know how much of a pain it is only after it happens to you. So, the kiddie hackers (hope I am not tempting fate) managed to make the site unstable for about 6 hours. Here … Read More “Goodbye to DDOS” »
A new self-signed SSL certificate will be created in the server certificate repository: # ls -la /usr/local/psa/admin/conf/httpsd.pem -r——– 1 root root 3089 Sep 23 12:50 /usr/local/psa/admin/conf/httpsd.pem The old one will be renamed as httpsd.pem.sav # ls -la /usr/local/psa/admin/conf/httpsd.pem.sav -r——– 1 root root 3046 Sep 5 01:23 /usr/local/psa/admin/conf/httpsd.pem.sav To assign this SSL certificate for securing your … Read More “Plesk: Self-Signed SSL Certificate” »
Prefork: The prefork MPM uses multiple child processes with one thread each. Each process handles one connection at a time. On many systems, prefork is comparable in speed to worker, but uses more memory. Prefork’s threadless design has advantages over worker in some situations: it can be used with non-thread-safe third-party modules, and it is … Read More “Apache Prefork versus Worker” »