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Old 03-24-2004, 08:03 AM   #1
klytu
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Question Red Hat 8 Security Question


When I initially installed Red Hat 8, I chose the personal workstation installation and set the security firewall setting to High. Since I am quite new to Linux, I do most of my work in the Gnome desktop under X-Windows and I am gradually learning how to work with shell commands in terminal mode. My computer is not connected to a network and probably won't be in the near future, but I do connect to the internet often via dial-up modem and I occassionally want to upload and download via ftp. I recently noticed that I appear to be unable to change my security settings (makes no difference whether I try this as root or as a non-root user entering the root password). What happens is the security dialogue appears and seems to allow me to change the settings (say to Medium), but when I check later the settings seem remain set to High. Is this behaviour happening because I am not actually connected to a network or set up as a network server and so no firewall is actually set up? Am I losing any functionality when connected to the internet because the security is set to High?
 
Old 03-24-2004, 11:27 AM   #2
r_morris
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Doesn't the GUI just alter iptables firewall?
What happens if you 'su -', then issue iptables -L command?
iptables -L will list the current firewall rules.
You should be able to google for some sites helping with iptables. It would be very easy to set up a set of rules for normal browsing, then use a second set for when you want to do FTP or other net activities that you want to allow one time.
With iptables, you do need to issue a command to save the current rules for loading at reboot.
'service iptables save' is the easiest way.

Roger
 
Old 03-25-2004, 08:05 PM   #3
klytu
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When I issue the iptables -L command as root I get the response "bash: iptables: command not found"
 
Old 03-25-2004, 08:19 PM   #4
klytu
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Please disregard the last post; I had to type /sbin/iptables -L to get the list of iptables rules. I'll do some research on iptables for more info. Thanks!
 
  


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