SSDP - Simple Service Discovery Protocol - can actually turn out to be a disservice, if this protocol acts in the way pictured to the left. As you can see from the Wireshark capture, SSDP is causing some unnecessary congestion in my LAN; in fact, it's not unusual for SSDP to broadcast about 10 frames every couple of minutes. That's annoying, and if it's causing the same problem for you, the following instructions may help stop this spam.
Just as the human body requires daily cleanup and factory machines demand turnaround maintenance, your personal computer requires regular cleanup. This simple maintenance does not cost a buck. Failure to carry out regular maintenance would slow down system speed with the passage of time. It can also make certain keys on your keyboard not work. Dust could also block the air vent and increase battery power use and increase core temperatures.
Linux and most other Unix derivatives provide the ability to create null routes. Let's say for instance a Linux server is being attacked by hundreds of IPs from 22.214.171.124/16. No problem..
At the time of writing, little if anything is known about Cryp_Ilomo-2 and its potential offspring, TROJ_ILOMO.CK. Yesterday afternoon our Trend Micro Office Scan Appliance started notifying members of our staff about the infection. Unfortunately, Trend was incapable of cleaning the infection at the time, politics prevents us from containing the offices at their firewall, and within just a few hours, multiple sites are now infected as the virus continues to spread.
A security conscious buddy of mine is an advocate of the Sysinternals freeware utilities. For those of you who don't know, Mark Russinovich, one of the Sysinternals co founders, was the guy that discovered and exposed the Sony BMG root kit back in 2005. In other words, the crew at Sysinternals knew their $h*t. Microsoft purchased the company later in 2006.
If you maintain a website that's hosted on a Linux server, you're aware the process of editing pages locally and uploading them to the server is often a hassle. Most server administrators run an ftp daemon to enable file transferring. Some of the file types a client may transfer include, but aren't limited to: images, style sheets, server side pages, and html.
Note: This is a guest post by Scott Hughes, administrator of Philosophy Forums.
This is what happened when I took down my network's defenses the other day. Fortunately my Windows machines were patched, or I might have been hit with a nasty remote exploit, or eighty. Click the thumbnail for the larger version.