This can come in handy from time to time. When working with servers you sometimes need to set static routes and even keep them persistent across reboots. Here is how you set a persistent static route in Windows.
route add -p [target] mask [netmask] [gateway] metric [cost] if [interface]
There are several reasons to disable IPv6 even though there is a constant stream of articles warning you to come up with a plan to migrate to IPv6. Here are just a couple of reasons why you might want to disable IPv6. IPv6 enabled devices put unnecessary traffic on your network if your not utilizing it. If you don't have IPv6 enabled tools, running it could pose a security threat to your network since you'll have no visibility into what the traffic is doing.
To disable IPv6 on Red Hat 4 and 5 servers click here.
If you have been in a position where you network management software doesn't include the MIBs you need, you might try checking the following site.
SNMP MIB Search
It doesn't have every MIB you might need, but it does contain quite a few.
Debian 5.0 uses nano as it's default editor. If your like me and you prefer working in vi/vim, there is an easy fix. Simply enter the following command and select vim, it's that simple.
update-alternatives --config editor
If you were looking for the Fedora RoadMap, but were having trouble locating it just click here.
The page has links to the schedules for old versions as well as the upcoming version Fedora 13.
I ran across another free online scanner, this one is from F-Secure. It took a little longer than other online scanners to download and run the components, but it did a good job finding some tracking cookies that other scanners did not mark as malicious. Again, if you don't run anti-virus software for whatever reason, using free online scanners on occasion helps to ensure your being a good citizen of the Internet.
F-Secure Online Scanner
Here are some of the common ICMP types used to discover a host on a network. You can get complete descriptions of ICMP types from RFC 792.
Message Type: 0 - Echo Reply
Message Type: 3 - Destination Unreachable
Message Type: 4 - Source Quench
Message Type: 5 - Redirect
Message Type: 8 - Echo
Message Type: 11 - Time Exceeded
Message Type: 12 - Parameter Problem
Message Type: 13 - Timestamp
Message Type: 14 - Timestamp Reply
Message Type: 15 - Information Request
Message Type: 16 - Information Reply
While ICMP might be useful for a network administrator to know what is going on it is also useful for a hacker to know what is going on. Denying ICMP requests from outside your network is one way to help deter hackers.
