Private IP address in public DNS

Some people will say no public DNS records should ever disclose private IP addresses….with the thinking being that you are giving potential attackers a leg up on some information that might be required to exploit private systems. Personally, I think that obfuscation is a poor form of security, especially when we are talking about IP … Read more

How to check for modified config files on a Debian system?

To find all Debian managed configuration files which have been changed from the default you can use a command like this. dpkg-query -W -f=”${Conffiles}\n” ‘*’ | awk ‘OFS=” “{print $2,$1}’ | md5sum -c 2>/dev/null | awk -F’: ‘ ‘$2 !~ /OK/{print $1}’ Edit (works with localized systems): dpkg-query -W -f=”${Conffiles}\n” ‘*’ | awk ‘OFS=” “{print … Read more

SSD or HDD for server

One aspect of my job is designing and building large-scale storage systems (often known as “SANs”, or “Storage Area Networks”). Typically, we use a tiered approach with SSD’s and HDD’s combined. That said, each one has specific benefits. SSD’s almost always have a higher Cost-per-Byte. I can get 10k SAS 4kn HDD’s with a cost-per-gigabyte … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)