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Category Archives: centos

Protecting WordPress with mod-security

Posted on February 11, 2015 by iwik
1

This my blog and also other hosted websites running WordPress are target of bots trying passwords to wordpress admin and posting spam comments. I was unable to found simple plugin for comments dns blacklist, so I focused to mod-security. Continue reading →

Posted in centos, debian, linux | Tagged apache, modsecurity, wordpress | 1 Reply

Installing vSphere cli on Centos 6

Posted on January 28, 2013 by iwik
2

VMware vSphere cli requires many CPAN libraries. On Centos 6 I have enabled EPEL repository and installed packages:
Continue reading →

Posted in centos, linux | 2 Replies

Redhat Enterprise Linux 6 IPSec configuration example

Posted on May 10, 2012 by iwik
2

IPSec implementation has been changed in recent Redhat Enterprise Linux (RHEL) from ipsec tools (used in RHEL 5) to openswan in RHEL 6. Configuration using ifcfg-ipsec interfaces doesn’t works any more. Obviously, same change applies for Centos.
Continue reading →

Posted in centos | 2 Replies

Install conntrack tools on Centos 5

Posted on July 20, 2011 by iwik
Reply

Conntrack tools allows manipulating linux connection tracking table. Command conntrack is useful for deleting conntrack entries, but it is not included by default in RHEL/Centos.
Continue reading →

Posted in centos, linux | Leave a reply

Digmia Centos repository

Posted on November 5, 2010 by iwik
Reply

Digmia Enterprise Linux Source is repository with many interesting and actual packages for Centos (RHEL). It contais for example mysql-5.0.84-2.el5.x86_64.rpm, php-5.2.10-2.el5.x86_64.rpm, zabbix-1.8.3-2.el5.x86_64.rpm, postgresql-8.2.14-1.el5.x86_64.rpm and many more.

Posted in centos, linux | Leave a reply

Blocking SIP brute force attacks with fail2ban

Posted on April 18, 2010 by iwik
Reply

SIP brute force attacks against Asterisk servers are very popular. Best way to defend is to block sip by default and allow only allowed IPs to connect. But we can not use this approach in some cases. Here fail2ban can help. Continue reading →

Posted in asterisk, centos | Tagged asterisk, bruteforce, centos, fail2ban, hacking, registration, sip | Leave a reply

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