?zeroDateTimeBehavior=convertToNull
This will handle the all zero Dates problem with mysql
Archive for October, 2006
9
Oct
Hidden files
It is important to look everywhere on the system for unusual or hidden files (files that start with a period and are normally not shown by the “ls�? command), as these can be used to hide tools and information (password cracking programs, password files from other systems, etc.). A common technique on UNIX systems is to put a hidden directory or file in a user’s account with an unusual name, something like ‘…’ or ‘.. ‘ (dot dot space) or ‘..^G’ (dot dot control-G). The find program can be used to look for hidden files.
To look for hidden files, use the following commands:
# find / -name “.. ” -print -xdev
# find / -name “.*” -print -xdev | cat -v
Manually add all MAC address.
Get MAC address of each machine using ifconfig
To add manually MAC address to ARP entries, use the following command:
# arp -s 207.35.78.3 00:50:DA:C6:D3:FF
WARNING: If you receive error message like: SIOCSARP: Invalid argument, it is because the MAC (Media Access Control) address you want to add is the one of your server. You must add only MAC address of INTERNAL computers in your private network. This hack doesn’t apply to external node on the Internet.
You can now be reassured that someone will not change the system’s IP address of an
INTERNAL system and get through. If they do change the IP address, the server simply won’t talk to them. With the new iptables tool of Linux, which replace the old ipchains utility for packet filter administration and firewall setup, MAC addresses can be filtered and configured in the firewall rules too.
9
Oct
HTML Page Breaks
This is on page 1.
This is on page 2.
Or you can pick a tag where you want the page to break. In this example I used the H3 tag
In the header add this line
Wherever the
is in the body of your page it will produce a page break.
8
Oct
Ruby HEREDOC Syntax
html = <<-EOT
all html goes here
EOT