Blocking the 80legs shitbot from a website
Here’s the scenario; a website gets slow, or server gets slow, or you simply notice a ton of random connections to a site that normally is not that busy. You Continue Reading…
Category: Web Hosting
Overriding (whitelisting) RBL blocks in Postfix on Plesk
Here’s the scenario; you’re using Plesk, you have it configured with Postfix, you have the mail server settings configured to query Spamcop, Spamhaus or whatever RBL you chose. Inevitably, “high Continue Reading…
Making postfix (on a Plesk server) not accept email for localuser@[IP]
So just learned something I don’t like about Postfix; it’s the fact that its default configuration is to accept email for local system accounts, even if virtual domains and aliases Continue Reading…
Removing postfix aliases after converting from qmail (Plesk)
I recently came across a server where email sent (i.e. RCPT TO) from remote to ‘root@domain’ for any valid domain on the server would be accepted by postfix and forwarded Continue Reading…
Convert pem-based SSL cert from Apache server to PKCS12 (.pfx file) for Microsoft IIS with OpenSSL
Moving a website from unix to Windows? Well I guess apache runs on Windows too but whatever. Here’s the command you’ll need to build a PKCS12 format SSL certificate file Continue Reading…
Block pointless POST requests
Not sure why, but spam bots love to make pointless POST requests against random pages on your websites, probably trying to find vulnerable php apps, SQL injections, etc. If you Continue Reading…
Block spammers/hackers from trying to log into your WordPress
Typically you’ll see your site being blown up with requests to wp-login.php. If you don’t have remote editors adding content, you can just block the requests from all but your Continue Reading…
Extract database names, default users and their passwords from psa database
Keep in mind this no longer works if you’re running Plesk 11 and have enabled the enhanced security mode which encrypts the passwords stored in the database.
Disabling DIGEST-MD5 on Plesk/Postfix
I have not done extensive research on this error yet, but on Plesk servers running Postfix you may see this in your /usr/local/psa/var/log/maillog file from legit clients: Aug 14 11:36:58 Continue Reading…
Recreate the qmail queue structure on Plesk server
First, please note, this script should ONLY be used on a Plesk server copy of qmail, it should never be used on a built-from-source install of qmail as the usernames, Continue Reading…