Ubuntu Security :: Alerts When Apache LOGS Contain Certain Data
Jul 10, 2010
Does anyone know of any software that can monitor the Apache logs for certain phrases or keywords then send an alert when found? For example I know an attempt to hack has been made when I see log entries like this....
/admin/
/admin/phpadmin/
/phpadmin/
But by the time I see it, the attempt has long since failed or succeeded. What I need is a way for my server to alert me WHILE someone is entering these phrases. I realize there may be a "hit" to performance but my server is not that busy anyway (except for hackers).
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Jun 30, 2010
I'm about to have a web server at home for the first time. I've always missed having full control and not having to contact my hosting company when I need to do some specific changes - and some changes they won't do for you at all.I've chosen the non-GUI Ubuntu Server with LAMP, and nothing more is installed really except for a couple of command line tools from the repository. The LAMP software has been locked down as good as I can by following some guides on the net and using common sense. Like Apache 2 don't have access to the file system except for the www folder, and setting the headers to Prod. MySQL has skip-networking and I've commented out the listen string to localhost. PHP has a truckload of functions that I've disabled in the php.ini, also by following some guides on the net, among some other security enhancing php.ini editing.
The only thing the server will serve is a well known PHP forum and some html docs, and that's all. Nothing advanced or complicated stuff, and I'm definitely not programming PHP myself or letting anyone do it for me.But I do want to sleep well at night knowing that my server is always on and sitting on the edge of my home network! And can I do that? I've heard that you don't need to be worried about getting your Linux server box hacked, but you should be worried about anyone getting root access to it. But is it really that simple? Ubuntu is shipped without root account and you must have the sudo password, right? What's the odds for anyone to get full access to my system?An issue: I've heard that Apache never must run as root. When I do a ps -ef, I see that there are several www-data processes running apache, but there's one root process running apache too. Is this normal and is it safe?An issue: I've heard that PHP can fail pretty easily. But isn't PHP running under apache 2 and limited by the www-data filesystem access?An issue: MySQL is running as a MySQL user, and I guess that's an unprivileged user right?
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Apr 13, 2011
this is the allert i got:Code:Summary:Your system may be seriously compromised! /usr/sbin/NetworkManager tried to loada kernel module.Detailed Description:SELinux has prevented NetworkManager from loading a kernel module. All confinedprograms that need to load kernel modules should have already had policy writtenfor them. If a compromised application tries to modify the kernel this AVC willbe generated. This is a serious issue.Your system may very well be compromised.Allowing Access:Contact your security administrator and report this issue.Additional Information:
Source Context system_u:system_r:NetworkManager_t:s0
Target Context system_u:system_r:NetworkManager_t:s0
Target Objects None [ capability ]
[code]....
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Oct 20, 2009
I have been receiving attack alerts. And I would like to root out the source of the problem. I'll give you the messages. If you could help me prevent this hacker from even being able to attempt these things please any advice is helpful. There have been memory stack attempts, failed sys_admin conversion attempts, password file write attempts etc.....
[Code]...
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Apr 26, 2010
I receive messages such as the below:
SELinux is preventing /usr/sbin/httpd from using potentially mislabeled filesjk-runtime-status. SELinux has denied the httpd access to potentially mislabeled filesjk-runtime-status. This means that SELinux will not allow httpd to use these files. If httpd should be allowed this access to these files you should change the file context to one of the following types, httpd_tmp_t,
I know how to change the owner of a file and the permissions but what does it mean to change the file context?
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Jul 19, 2011
I just putup the fedora15 on my PC. there are several msg coming up from selinux saying permission denied, though I am not doing any administrative activity. the PC being a workstation for reaserch. how can I know the denial is for an security intrusion attempt. how can I set conditions to see the logs of all security intrusions. how can I set exclusive msg-ing from selinux that the denial is for a security intrusion attempt.
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Jan 19, 2010
Just installed CentOS 5.4 selecting Server configuration where web server was installed.
After install, I browsed to the ip of the box and no apache test page shows up. /var/log/httpd/error_log doesn't show any browse attempts.
service httpd start
OK
try again and no browsing.
Did a :
yum install httpd
it installed httpd.i386 along some other dependencies.
Did a:
service httpd restart
OK
and still not browsing.
basics of getting apache running and configured on a fresh server?
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Jul 6, 2011
I am new to web server support. I have a request from my management to modify the logging slightly. Effectively I need to redirect a custom string from our http response into the apache access logs. When a user navigates to our site they receive a "dye" number that is associated with them. This number follows them to whatever cluster they are directed too. The string is formatted as such, com-company-dye: d0a2#6dfce. I need that that header dye to appear in the access logs so we can use that dye number as a key for troubleshooting issues though out our various monitoring systems.
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Mar 10, 2011
In a squeeze box, I installed awstats and it's working like a charm. Its cron job update the awstats database every 10 minutes (as it runs as root). But I would like to be able to update the statistics from the browser as well. So I setup everything as required and I gave "read" access to "others" to every apache log file. Now, a couple of questions came to my mind:
1. Am I compromising server's security giving "read" access to "others" to apache log files?
2. Instead of giving "read" access to "others", I could add www-data user to adm group (as apache log files are owned by root:adm and permissions are rw-r----). Is this more secure than giving "read" access to "others"? 3. If the option would be giving "read" access to "others" at the end, a log file would be owned by root:adm and its permissions be rw-r--r--. As apache rotates its log files, when Apache create a new log file, does it preserve the permissions (rw-r--r--) or create it with the default permissions (rw-r-----)?
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Mar 30, 2010
I noticed i have quite a few logs that end with .[number] for example "syslog.1" "mail.info.1" etc, why is this and why are they there since almost nothing is logged in them ??
Question 2: on my server im running a script like imagebam and imageshack with hosts images so i have quite a few apache requests to my server. I am wonder why apache takes up so much CPU for some of the requests? in Htop some requests take up 1.2% CPU while other take up 3-5% etc, so the total load is about 1.50 0.58 0.84 to 2.61 1.08 1.14 with about 128-150 apache requests all the time while sometimes the CPU load can be almost 0 with the same ammount of requests. is this normal? what could cause this in apache ?? the server is just running apache2. MYSQL is running on another server.
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Feb 2, 2009
For remote syslog logging of the general log files, I set:
Quote:
How do I setup the remote syslog logging of apache logs? Do I just add a line in the httpd.conf file to for example ?:
Quote:
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May 27, 2011
For internal security reasons I need to prevent ourmcat logs from writing to the webserver local disk. We set up a separate logging server with rsyslog and need to pipe the log data to it.I am trying to work out how to configure tomcat to send all log data to the logging server via the rsyslog client (running locally) via a named pipe. We are on CentOS 5.6, Tomcat 6 and rsyslog 5.8.1. I need to know: 1) do we use the default logging library or log4j2) where is this configured in the tomcat config3) is there any code that would need to be written to achieve this
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Apr 22, 2009
I don't mind that apache logs "rotate". By that, I mean that periodically the most recent log is renamed "*.1" and the older logs are bumped up a number In my particular situation, I do mind that the log that was "*.4" is deleted rather than being renamed to "*.5" when that periodic renaming happens.
I know most of the other /var/log files have the same behavior. What does this? Can I change it so my apache logs are "rotated" up but aren't deleted? I know this will take some hard drive space, but I have a lot of it.
EDIT: CentOS 5.3, kernel 2.6.18-128.1.6.el5, Apache 2.2.3
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Mar 18, 2010
I cannot find one single UFW event anywhere. I have researched this and see that others have trouble finding these logs too. I have looked in every /var/log there is and I can't find one event. I have UFW enabled, default deny and logging set to medium from a previous logging low(in hopes this would create more events to be seen). In terminal, UFW is shown as active. I have been using Ubuntu for more than a year now and I recall seeing UFW events with every session in some /var/logs in Ubuntu 9.04 - I'm running 9.10 now. I have also tried looking throughout the system files and have found nothing. Is UFW not working properly or could I just not be experiencing any firewall events(not likely)?
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Apr 26, 2011
If anyone knows where does ZEIGEIST put its logs. Is it in my home folder, or is it somewhere else. I have my home folder enrypted and this is really not very secure if someone can see those logs...So. Does ZEITGEIST put logs in my HOME folder or not?
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Jun 16, 2010
how to find USB enteries/ logs in linux
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Apr 22, 2009
I have connected to my friends machine, for some reason . all the logs are wiped out . ?
CentOS .
There is nothing there? is this a unusual to Linux systems?
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Jan 8, 2010
These files seem to contain browsing history:
~/.mozilla/firefox/xxxxx.default/cookies.sqlite ~/.mozilla/firefox/xxxxx.default/formhistory.sqlite ~/.mozilla/firefox/xxxxx.default/downloads.sqlite ~/.mozilla/firefox/xxxxx.default/places.sqlite ~/.mozilla/firefox/xxxxx.default/places.sqlite-journal
~/.mozilla/firefox/xxxxx.default/Cache/
Therefore I have cleared these files using an erasing program. I am wondering if there are other locations where such log files are stored for Internet browsing. I have looked in the /var/log directory and cannot see anything - for example doing a grep on http:// after browsing in Firefox does not reveal anything obvious.
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Jan 19, 2010
whether iptables logs can be set to automatically resolve IP addresses? I am running the firewall on a network with DDNS/DHCP, and this ability would really help quickly identify hosts with suspect traffic.Failing this, I guess the simplest solution will be to simply set static addresses!
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Feb 9, 2011
What is happening when I log in to my Ubuntu server machine via ssh and putty. trying to understand everything, primarily securing my server.
I have specified the ssh server to listen on port 5525, and can login without a problem.
When I look at the logs though it says I connected from xxx.xx.xx.xx on port 53602.
What is happening here and why is the logged connection a different port to the one specified in the config file?
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Apr 5, 2011
In an effort to learn more about firewalls and iptables I have left behind gui set-up tools and have setup a firewall using iptables that logs to its own file. The firewall is as follows:
Code:
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
:TCP - [0:0]
[Code]...
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Mar 18, 2011
I have in my hands a bunch of samba logs, about 24 different files and I was wondering if there was a tool that would go through them and organize them into something readable.I had a gander at Sawmill
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Mar 9, 2011
Iam looking security specific event ID on Linux .hear are thousnds of event ID in Microsoft Windows/XP and VISTA etc. Similar way looking for Linux,unix ,Solaries,AIX etc event ID. I would to correlate and implement with Arcsight.
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Mar 24, 2010
Please let me know:1. What LDAP logs are typically available2. How to find them3. How to Parse them
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Aug 15, 2010
What the following means?
Code:
Does this mean that connections from those IP's have been blocked or what?
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May 23, 2011
CentOS 5.6 Server patched to latest, multiple name-based apache virtual hosts. SELinux OFF Everything was working fine until the other day. I've been making quite a lot of changes so it may well be something I've done, but I can't find out what! Last night I got the following in my logwatch : -
Requests with error response codes
404 Not Found
/admin/phpmyadmin/scripts/setup.php: 1 Time(s)
/admin/pma/scripts/setup.php: 1 Time(s)
/admin/scripts/setup.php: 1 Time(s)
/db/scripts/setup.php: 1 Time(s)
/dbadmin/scripts/setup.php: 1 Time(s)
[Code]...
The problem is that NONE of my logs, secure, httpd, messages, NONE of them, show any trace of these hacking attempts. They used to show up in secure and apache error logs, but no longer.
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Feb 1, 2011
I have a (headless) Debian (Linux debian 2.6.26-2-486) system running on an old Pentium machine in our home network. I use it as a Samba share, among other things. I recently noticed some Samba log files that I cannot explain the origin of. In /var/log/samba there are a couple of files like this one:/var/log/samba/log.istvan (Note: there is no machine named 'istvan' in my local network)
Code:
[2011/01/04 21:15:34, 1] smbd/service.c:make_connection_snum(1198)
istvan (::ffff:78.92.155.185) connect to service boeken initially as user nobody
[code]...
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Apr 22, 2010
I have my router configured so that it drops outgoing telnet connections (and other protocols I don't use). It's a 2wire gateway. 192.168.1.65 is the internal IP of my ubuntu box.I'm trying to figure out what normal network traffic looks like and whether I should be worried by this log entry. At the time this happened I was testing out TOR (just navigating to a few sites (dell, ubuntu forums, etc.) nothing all that interesting.)
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Feb 12, 2011
Has anybody else seen this kind of attack? I see those messages on 2 exim mailservers. Looks as if someone sends a 50MB big mail header :S What is their goal except from increasing my traffic?
Code:
2011-02-12 07:48:53 SMTP protocol synchronization error (input sent without waiting for greeting): rejected connection from H=ns33.medialook.net [91.121.108.5] input="GET / HTTP/1.1
Accept: */*
Accept-Language: en-us
[Code].....
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Feb 16, 2011
I am trying to get OpenLDAP to authenticate user logins, but running around in circles. Are there any logs produced by either client and/or server that would indicate possible reasons why it was unable to login as a user?Below is an explanation, any ideas would be appreciated, as I think everything is setup as per the various articles on using LDAP.
I have a CentOS 5.5 OpenLDAP server, and several others, some host services, some are file shares (samba).So far I have been able to successfully configure OpenLDAP to carry out all the ldap* commands from both the local server and from any of the remote servers, either via non-ssl or ssl connections. However, as soon as I try connecting any services up to it, it doesn't play ball.Back to basics, having cleared off all previous attempts at this from all machines, I have gone through the following:
Installed OpenLDAP server/client on host (plus nss_ldap).
Configured /etc/openldap/slapd.conf (see below)
Configured /etc/openldap/ldap.conf (see below)
[code]...
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