hosts.deny

atanvarno · 09-06-2006, 05:07 AM

Hi,

i try to write a script which gets IPs from a list, and puts them it into my hosts.deny. It already works in a test environment, but every now and then a line with no client is in between. So it looks like: "sshd : "
what happens with this line? Will it be interpreted as not exisiting or will it be interpreted as ALL? Or will it crash?

Thanks

Sascha

Capt_Caveman · 09-06-2006, 06:18 AM

Better yet, why don't you include some kind of sanity filter in your script to verify that the IPs are numeric? You could use a standard regex to make sure the IP consists of only numbers.

magnus.therning · 09-07-2006, 02:35 AM

Quote:

Originally Posted by atanvarno

Hi,

i try to write a script which gets IPs from a list, and puts them it into my hosts.deny. It already works in a test environment, but every now and then a line with no client is in between. So it looks like: "sshd : "
what happens with this line? Will it be interpreted as not exisiting or will it be interpreted as ALL? Or will it crash?

Thanks

Sascha

It looks like it's ignored. I agree with Capt_Caveman though, you should filter your entries and not write anything if the list of hosts is empty.

filex · 09-08-2006, 03:19 AM

I would suggest you try http://denyhosts.sourceforge.net/

atanvarno · 09-08-2006, 04:55 AM

Hi,

thank you for all your answers. I now filter out the empty lines.