Data Networking Blog
Blog for Admins
Category Archives: Security

I recently had a problem where scanning a IIS web server using Titania SSLScan tool for SSL/TLS ciphers I received empty results. The webserver otherwise was working fine and if I tried a web browser I could see a cipher in the SSL certificate. After spending alot of time I finally found a solution. Running […]

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August 20, 2015 Security, Systems, Windows
Jd

While deploying a new web server in our web farm I noticed that the web server I created was giving me some headaches with SSL. It would sometimes present invalid certificates and if I tried telnet commands the connection on port 443 closed quickly. This indicated a problem but I did not hear of any […]

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August 20, 2015 Security, Systems, Windows
Jd

OK so you have followed my post “Securing SSH with fail2ban on CentOS” and still can’t get it to work ? No worries I had the same problem and this post outlines how I fixed it. After installing fail2ban I deliberately tried a few failed log-in attempts from another machine and realized it was not […]

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February 5, 2015 Security
Jd

OS: CentOS 6.6 Final Version I recently came across fail2ban program while i was trying to harden the security of my CentOS Server. Fail2ban allows you to block IP addresses that register too many failed login attempts to your SSH service which indicates a brute force attack. If you allow such attempts on your system […]

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February 5, 2015 Security
Jd
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