Here are some interesting tools that run on this server, use the buttons to the left to give them a try and the pointers above to browse through this page.
Netsaint is a very complete opensource network monitoring package for Linux with a nice web interface. Different from most web based network monitors is that this ones works completely interactive. You can generate monthly stats for example or create an up-to-date vrml view of all the monitored hosts, their status and their position in the network!! Basically it monitors the status of a set of hosts and associated services very accurate and gives a warning when problems arise by e-mail, through its web pages or even by sending a message to your pager or cell-phone. It does this by first checking if a service like http (or multiple services) is running on a host and if it does it reports the host and associated service(s) as being okay. If not there are first some other checks performed like repeating the test a couple of times and then pinging with a really long time-out, which is again repeated before actually reporting a host as completely down. Here you can test-drive it running on this machine, get a good impression on how it works and what to do whit it and above all see how bad my ISP, Chello Netherlands, is doing.....
Webmon is a 'simple' script to collect the packet loss of a list of web or ip addresses at a custom interval by fpinging them with an amount of data. Besides this you can do a traceroute with Visual Route on all these hosts through the generated web pages, which allows you to determine at exactly which point in the network things go wrong. You can put the packet loss into a webpage but you can also use the MRTG plugin. MRTG is a package which generates png graphics of host performance over time. Recently I choose the MRTG plugin, so the old Webmon page has been replaced by a Webmon-MRTG page. I also installed a second plugin that pings the same set of hosts with an ordinary 64 byte ping, you can access it from the Webmon-MRTG page. I configured the Webmon script to monitor some local (.nl), some European and some international web sites, the most important routers and DNS servers of my ISP, Chello Netherlands, and the DNS root-servers. I configured it to ping with a packet size of 1024 bytes instead of 64 bytes, which is the default value of the ping command (and Netsaint). Because ordinary traffic uses large packets, Windows uses 1500 bytes as the default value, this list gives a better display of current network usage and thereby download speeds. The downside however is that large ping packets easily get dropped down the way because the ping command has a low priority especially with large packet sizes. So 100% packet loss doesn't necessarily mean that the host (or a router in between) is actually down. It does mean that you have a really bad connection with this host and probably have problems connecting with it, the scale of this however is mostly smaller than the packetloss implies. Click on the link to check it out. If a host has 100% packet loss you can always look if it's mentioned in Netsaint here, since that gives a far better presentation of actual downtime since it uses standard pings and other pluggins to verify that a host is actually down.
Ipac is a nice tool for Linux which can keep track on exactly how much Internet traffic you create and can generate nice web graphics which show your average download and upload speed over time. This one monitors the total traffic that passes through this PC on a weekly basis.
Dnews is a very good news server for both Unix and Windows. This is its web interface and allows you to take a look at my ISP's newsgroups (chello.nl) and many others. Because there are many local groups, posting is only allowed from chello.nl ip's for now. If you're a chello customer however you can always send me a mail from your chello account and I'll give you full access.
SimplePop is a collection of scripts that allow you to send and receive e-mail. You provide it with the POP server of your provider and ofcourse your username and password. This allows you to check your mail without deleting it from anywhere in the world while e-mail is send through the local subsystem on the other hand. This method is relatively safe: no e-mail is collected locally and there is no password database or user settings file either. The POP protocol, which most ISP's use, however is really insecure as it communicates in plain text over the Internet where anyone can listen in...hello I'm john and my password is smith I want to receive my mail, something like that!! So it's really better not to use POP-3 mail at all. But since most providers don't offer a choice in this, there really is lots and lots of traffic like that already on the net and finally there are not that much hackers around, I mean real ones..this is a risk you can take. Check it out here. Got this one from Cgi-resources.com, were you can find a lot more of applications like this one.
Setiathome, well if you don't know what the hell I'm talking about then go to http://setiathome.ssl.berkeley.edu/, I really don't feel like explaining it at least not for now, to much English . Here you can find a web based monitor for seti running at this computer, sloooooow .
Sara, definitely the best security scanner out there I ever came across!! Instead of just showing you a boring list of open port numbers that the ones like http://grc.com/ and http://www.dslreports.com/ do, this web based Unix application scans your PC for exploits (or any other host it can reach (even complete subnets!), although I don't encourage this kind of abuse...). And best of all it can also run as a server!! Here you use a modified version of the supplied webscript to perform a sara scan on your host and have the results e-mailed.
That's all for now folks, questions? mail me:
© JB 2000