Dumb Unix Permissions
Mar 2, 2007
I'm a Unix newbie so please forgive me if this is a really dumb question but I haven't quite been able to figure it out...
I'm trying to set up a form script to replace formmail on the server. I've set it up in the cgi-sys bin. I chmod the script 755, but when I try to call it I get 500 error messages.
I was looking at the permissions and I noticed that all the other scripts have the "wheel" setting.. such as:
197633 -rwxr-xr-x 4 root wheel 3479620 Dec 22 03:04 _formmail.cgi*
The new form I added as "root" instead of "wheel":
1280150 -rwxr-xr-x 1 root root 12342 Mar 1 21:46 mycontactform.pl*
How do I change it so that "mycontactform.pl" is in the "wheel" group so that it works? Anything else I should know/do to make this secure? I don't know enough about the permissions to change this. I want all the customers on the server to be able to use the new form.
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Dec 26, 2007
I currently have a script with code below that works great when the permissions on the dbconnect.php file are 755. The problem with this is that anyone on the web can see this config file which contains passwords DOH! If I change it to 751, then it tells me "cannot connect". The user and group on both the page and this script are the same.
With apache, i use the setting to store http and https files in the same directory.
Any ideas how to make this a little more secure? Changing the permission to 751 would do the trick but then it breaks the script. I don't understand why the script would be running taking "other" permissions into account...it should be running with "user" permissions instead. it might even have something to do with who the apache executable is running as...
<?php
include("../../../cgi-bin/dbconnect.php");
// Connect to server and select database.
mysql_connect("$databasehost", "$dbuser", "$dbpword")or die("cannot connect");
mysql_select_db("$dbname")or die("cannot select DB");
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Sep 1, 2007
What is a quick way to check if I have zend on a server? (I think I installed it, but I can't remember for sure).
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Dec 4, 2008
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Sep 4, 2007
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Aug 13, 2007
Ive recently switched from PC to OSX, i now own '2' Macs, a laptop and a G4 Quicksilver, although its CPU speed is slower and the Ram is lesser then my old PC, it performs much much quicker and more efficient.
The question is, i'm a web developer, i know very little about the back end goings on, such as System Administration, but i've got a few books on the subject which are aimed at Unix system administrators. Does UNIX cover both OSX and Linux (Debian mainly).
Eventually i want to be able to run my own server, i own a debian dedicated server, but its not my own, its the datacenter's and i dont really know enough to get down and dirty in the back end. Id like to be able to set up servers from scratch in the long run.
So would learning UNIX cover both OSX and Linux, im not bothered about Windows, i don't plant to use a Windows machine again.
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Mar 8, 2009
is there any performance difference using php on unix and (isapi)windows platform?
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Nov 6, 2009
My server has been hacked, I need you please to help learn about Unix server security to protect my server.
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Feb 14, 2009
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Sep 2, 2008
I thought this was interesting.
AT&T Shared Unix Hosting
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Nov 23, 2007
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May 22, 2008
I`ve been playing with Debian and FreeBSD for couple weeks so far. As a noobie I`d like to ask you what distribution you prefer for web server? I know that it is said "the best is the one you know better" but in my situation it is hard to say that I really know either Debian or FreeBSD.
So what would you recommend in my situation (new to *unix topic) if I have to set web server for a company site?
I`m mostly interested in security, relatively easy to configure/secure/find info how-to, easy to update soft apache/php/mysql.
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May 14, 2008
which hosting is better - Windows, Unix or Linux?
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Sep 7, 2007
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Jun 11, 2007
I have a perl shell script usr/bin/ken.pl
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Aug 6, 2008
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Aug 27, 2007
I wonder which virus scanner software is useful for Unix server(Centos 4.5). One of my client install SMF forum and when visitors access the forum,their virus scanner warn that site is affected by trojan. I used Clamav to scan entire home directory but seem nothing found.
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May 10, 2009
What are the cons and pros of using UNIX or Windows? Or maybe even Novell. Also, which UNIX distro is most efficient and secure for web hosting?
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Oct 27, 2008
I'm currently using a SiteGround virtual private server with the following spec:
OS:CentOS (Linux)
cPanel: yes
Support:24/7
RAM: 512 MB
Accounts: 1 main
Traffic: 1,000 GB
Price/mo: $99.00
I'm hosting x2 Joomla 1.5 sites using PHP v5 with the following extensions:
Sobe2
OpenX
Community Builder
Fireboard
Virtumart
The problem is that both sites have several sizable databases, each in excess of 100k records. After uploading the first 90k records to mySQL it became apparent that performance was going to be an issue. I'm therefore considering a dedicated server, tuned for returning fast DB results.
Firstly, would a dedicated server solve my performance issues?
Secondly, what are the critical components, spec wise, that would ensure superfast DB calls?
Like everyone, I'm looking for the best value, meaning solid support, uptime and a low monthly cost. I have been recommended the following hosting partners, but would like everyones input:
site5.com
rackspace.com
iweb.com
singlehop.com
servepath.com
superbhosting.net
Rochen.com
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Jun 24, 2008
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Oct 9, 2007
How to check for disk health in Unix (freebsd)?
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Jan 4, 2007
Can someone tell me how to clear the history of a UNIX user? For example, when logged in as a certain user I can press UP to see the last commands that were used. How can I get rid of them?
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Apr 15, 2007
I have directory1, directory2, directory3 etc and each has directories inside them. Is it possible to zip them all (directory1, directory2, directory3 and their contents) into one .zip file? If so, what is it?
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Feb 21, 2008
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and
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Sep 5, 2008
I'm transcoding videos on a web server using ffmpeg and can successfully transcode some video formats but am having a few issues.
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Jun 11, 2008
Do you have any recommendation for an open-source firewall running on Unix which could do:
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- VPN configuration
I search for 2 days now and nothing seems to respond to these requirements. It's for a local network.
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Jun 22, 2008
After peeking around at this board for some years, I decided to create an account.
I'm the original author of Rootkit Hunter and decided to create a new tool, named Lynis.
Lynis is an auditing tool for Unix (Linux, BSD and other). It scans the system and available software to detect security issues, bad/insecure configuration options and unsafe file(s) permissions. It tries to assist administrators in using and maintaining best practices, but also in the common things which get forgotten (like expired SSL certificates).
Though Lynis has been available for some months now, and many
updates/suggestions have been implemented, it still can use a broader user base. So my issue (we are in the technical issues section after all) is that I like more input and want to know what other people audit on their systems. Or what tools they like the most. Of course I have many ideas myself, but with the many different people here (in skills and specialties), every input is most likely improving the tool and increasing security for others as well.
In case you like to try the software (GPL, free to use), the software can be found at www . rootkit .nl (can't use URL's yet, due 5 post policy)
Since I don't only want to announce my tool (but like to have some input), I placed it in this section, hope it doesn't look like a "commercial" sell.
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Sep 4, 2007
Is there any command to generate it? The httpd.include is there but httpd.conf is not picking it up. Suppose there is a "middle" man to connect the vhosts httpd.include and httpd.conf
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Jun 3, 2009
I'm trying to get FTP working on a FreeBSD 7.1 box running ProFTPd.
The service runs but the issue is that the users cannot write to their home dirs. The server returns a 550 error.
Previously ProFTPd ran as user and group of "www" but I changed it to "nobody", which did not change anything.
I'm sure the issue is that of the home dirs for the users being owned by the users themselves and the service account not having access to write in that directory.
I'm not sure what is best to do here. Do I lift permissions so everyone can write to the home dirs? or is there a better way?
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Jun 2, 2009
Let me start off with saying: I haven't had any suspicious activity, nor do I think I was compromised.
I logged in as root, and was simply clicking around my dedicated server and came across a few folders with permissions at 777. ALL are above /public_html
Irregardless, is this safe? I recall reading a bunch of topics on here, that /tmp needs to be hardened. Isn't this also above /public_html?
For one example:
/var/tmp is chmod to 077
..inside is a bunch of sess_ files
Is this folder open to hacking?
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May 5, 2009
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