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You mean you're worried that the Windows-only script kiddies would rip your Linux box off? Not a chance.
netstat -an | grep LISTEN
And see if anything unwanted is listening right after boot-up. If not, sit back and relax. If yes, you can remove the service(s) in Mandy Control Center as root. i.e. mutt, portmap, httpd, xdm, mysql, sendmail, fetchmail, diskcheck, for example, if you're running a stand-alone box, not server.
Being new and uninformed (also probably a bit thick )at this linux game, under windows, my service provider supplies me with norton anti virus, now I know that under linux (mandy 8.2) the question of viruses whilst pertinent, isn't such a concern but what with this and an apparent lack of firewalling, I am not really happy leaving my system connected to the net unattended. I would not be concerned at all if I had a firewall in place, but I cannot find an app within the mandy 8.2 that will carry out that function.
When I previously had Suse 8.0 (personal) running, my brother had configured the modem and made sure that the firewall facility was running, as well as setting it up so when I was finished using the net, I just had to "Ctrl C" to drop the conection.
Since I managed to screw up the suse installation and after throwing my toys out of my pram and loading the mandy 8.2 over the top (mandrake 8.2 is more to my liking and has a less "sterile" feel to it) I have managed to configure my modem myself (ok, with a large amount of assistance from LQ and the MUB forums) it still concerns me to leave the connection up and potentially vulnerable, hence I am in the habit of disconnecting the net access link.
So the question is how should I try and set it up so I can "drop the link" to the net or maybe what could I do about a firewall, since under windie$ I use the zone alarm freeware firewall and have no problem with leaving that up and running.
Beacuse of my amoebic level of knowledge about linux, I really need the "monkey see monkey do" instruction to be able to accomplish anything i.e. linux 3, johns confidence in using linux 0.
Any ideas/info much appreciated
Oh and just for info, I don't tend to do much with regard to amending and changing my linux install because being a "non-IT" person, a lot of the help posted here and at other locations is well and truely over my head (like British Rail, i'll get there eventually!)
Well I've never really used a modem on linux but as far as I know the pppd program gets used to connect. So wouldn't just killing the pppd process be sufficient? Something like 'killall pppd'. You could probably make a simple script out of that and place it on your desktop with a nice icon if you like the point click stuff.
And for a firewall you should be looking into iptables. You should read the documentation at www.iptables.org
Distribution: Slackware 10, Fedora Core 3, Mac OS X
you are using an asdl modem yes?
There is a way that you could just kill your connection. When you make a connection you use a program called dhcpcd (a client which will talk to your isp to get an ip address). You can kill this off with the command 'killall dhcpcd' as root.
that ifdown thing is a script for when you are using a dial up modem thingy and will perform commands when you disconnect.
iptables is a program used to set up a packet filtering firewall (like what you have for windows) though you need your kernel to be set up right for it to work.
One important thing you need to be doing is making sure that you don;t have pointless things running, waiting for an incoming connection (such as an ftp daemon). This is what that netstat -an | grep LISTEN was checking for. A lot of stupid server programs that are only supposed to be for server's are started on a desktop machine. You especially want to make sure that telnetd isn't running.
im assuming that mandy has a nice little tool to do this for you otherwise you need to edit a file in the /etc directory.
"I would not be concerned at all if I had a firewall in place, but I cannot find an app within the mandy 8.2 that will carry out that function." - Unfortunately, 8.2 is a rushed product. Some parts of the interface are broken.
In terminal/console as root, type
Follow the instructions. No to all servers. Yes to save & exit.
I'm just going to dive in now and see what happens, though i'll probably be back with more stupid questions !!!
p.s. Yo, jetblackz, i've heard of "serial killers" and serial ports, but you're the first serial OS installer that i've ever come across! either that or you got some strange raid set up the size of a small house!