I've setup the Uncomplicated Firewall (UFW) on Ubuntu 10.04 LTS and blocked an IP address. UFW status shows that the firewall is active and the IP in question is denied. The issue is that I'm seeing the blocked IP address in my Apache logs.
View 1 RepliesIs there anyway i can ssh/rdp/telnet into my server from the outside bypassing comcast ALL blocked ports
View 1 Replies View RelatedIf I use my current iptables firewall settings my php includes from my own site get blocked by the firewall. If I use accept all tcp and udp it still does not work. If I use a default policy of accept all, then the php includes work which is not safe. I am running a drupal 6 site on a centos 5.3 vps with apache 2.2.0 and php 5.2.6 w/ safe mode on. He is my current iptable configuration.
Quote:
Chain VZ_FORWARD (1 references)
target prot opt source destination
Chain VZ_INPUT (1 references)
target prot opt source destination
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We have a spam in our network and we installed antivirus in all our systems and cleaned the virus from all pc's after that i had removed my ip from the database of blocked ip's but still my ip is blocked for sending spam i don't know from which pc the spam is going on the internet.
so i have a question that my proxy server is redhat linux and as a newbie i don't know the command's to find out which pc is creating large bandwidth to the internet. If you tell the command how to see which pc is sending spam then i will discard that pc. Also i want a strong firewall to stop spam activities.
I have installed MoBlock as instructed here: [URL]
After installation I created my own list file in /etc/blockcontrol/custom-blocklist.p2p and have the following uncommented at the bottom of /etc/blockcontrol/blocklists.list:
Code:
locallist /etc/blockcontrol/custom-blocklist.p2p
The list contains the following 2 entries:
Code:
Yahoo:98.137.149.56
Google:74.125.47.147
When I do:
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Recently I just noticed that the locallist rules seem to have no effect. I will always get "destination port unreachable" even if the locallist entry in blocklists.list is commented out.
However, whenever I try to browse to that IP, even when blockcontrol is on, even by typing the IP into Konqueror (not the domain name), it lets me go there every time. How can I know that my other applications will not to do the same thing? How can I lock this down and test it empirically to be sure?
On April 10, 2010, I upgraded some packages on my Ubuntu 9.04 server. This included an upgrade to "ufw 0.27-0ubuntu2". I rebooted the server, and all appeared to be fine.
Now I've noticed that UFW is not logging blocked packets since that reboot. It used to do this. It is still logging the allowed packets that I've configured it to log.
Here's what a "ufw status verbose" says code...
I come to Ubuntu with the notion that it is much more secure than Windows. In XP I had an anti-virus, third-party firewall and sundry softwares against spybots, rootkits etc. The anitivirus blocked the suspicious web pages while browsing. I generally avoided public networks, carrying a portable internet device Do I need similar stuff with Ubuntu.
View 9 Replies View RelatedI don't know is this the right place to ask, but i must ask some questions Here's my problem.I'm a student in highscool,and here we use Linux(ubuntu) OS .Every classroom has like 30 PC's connected with the main computer(the teacher's one) so....3 days ago we were forbidden access to some websites it says This domain is Blocked.By the way the Linux version installed is 7.04(feisty Fawn) i tried disable cookies that did not worked,also tried to whitelist some website,that also didn't worked out
View 7 Replies View RelatedIn the past week or so I've noticed some weird network behaviour. I find accessing some sites such as Amazon, Paypal, and Bigstockphoto really slow. Sometimes the page will not load at all. Other sites are fine. The problem sites are not a problem for others on my LAN at home. When I try to open the problem sites, I can see in Firestarter blocked connections coming from 2.1(8/9).xxx.xxx on various ports such as 36007. This only happens for the problem sites. I attached a typical output from firestarter.
This happens with Firfeox or Chrome. Using Ubuntu 10.10
I was using Transmission BitTorrent the other night, when I noticed that I was getting heavily spammed by one particular IP. I then stopped the torrents and disabled the network.I wanted to add my own block-list, containing this IP, to $HOME/.config/transmission/blocklists, but could not get it working. Transmission is supposed to parse this text file into binary format upon startup. I tried both allowed formats, but Transmission kept on creating an empty binary file (this was version 1.93 in the official repo, I have since upgraded to 2.33 by adding a PPA, and it now works correctly).
I then blocked this IP in the firewall outbound traffic policy, allowing Transmission, on the port number that I forwarded on the router, on the inbound policy. After a restart, I watched the torrents picking up speed as more peers connected, and then saw this IP getting blocked. However, the same IP immediately also appeared as a peer in one of my torrents.I then double checked all settings and log files, to ensure that there is no typo. The same IP that was shown as blocked in the log files, also successfully made a connection to Transmission. After a while I gave up, and shut down.The IP was an incoming connection, but was explicitly nominated to be blocked in outgoing traffic. The firewall was supposed to silently ignore this IP, not making a connection possible.
ICMP filtering was enabled, with the following not allowed:
- Address Masking
- Redirection
- Source Quenching
Now surely this is not normal?Is this a bug in ip-tables?Isn't this a serious security breach?
We are trying to define an appliance based on Suse for an application server and Web server Apache, so we would like to know configuration best practices for network and security, is there any paper/doc about best practices?
View 3 Replies View Relatedhow can i make apache to run in runlevel2
View 1 Replies View RelatedWhat would be the effect of setting ProFTPd's user and group to the same user and group that Apache use? Are there any security risks in doing this, or is this safe to do?
View 4 Replies View RelatedLately i just installed Ubuntu 10.10 and get my Squid installed.It work much superior than Polipo for cache but i do not understand why i got Apache installed after i installed Squid.Is there any co-relation between Apache and Squid?Does it gonna make me run my own web server?
View 4 Replies View RelatedI know how to assign file permissions and other tasks like user to group, but I'm stuck with a situation in how I should set up my system.So I have a LAMP server set up. I'm not the only developer so I created a group called "developers" for my other users "Mike," "Alex," and "Cindy," which are developers (I'm Mike by the way). I know that "www-data" is the user and group Apache uses.This is good because only I have permission to update the production site, but for the dev site, it's a different story.
View 3 Replies View RelatedHas anyone used the mod_auth_remote module to delegate authentication? I have two apache2 servers. One is a content server and the other one is the sso/auth server. When the content server receives a request for a resource protected by basic authentication, the request is forwarded to the sso server for authentication. So far so good. But, the sso server should return a http 200 to the content server and granting access to the user. However, the sso server always returns a http 301 to the content server. So I appear to be stuck in an authentication loop.
Content server config:
<Directory /var/www/html/secure/>
AuthType Basic
AuthName "Content server"
AuthRemoteServer sso.intra
AuthRemotePort 80
AuthRemoteURL /auth
[Code]...
Or perhaps you have a better way of accomplishing apache sso across multiple servers?
I happened to be looking at my Apache-2.2.8 log on an Ubuntu LTS 8.04.4 system, and noticed a few lines like this:
Code:
61.160.212.242 - - [06/Mar/2010:07:04:41 -0800] "GET http://218.30.115.246/ HTTP/1.1" 200 295 "-" "-"
61.160.212.242 - - [06/Mar/2010:07:05:29 -0800] "GET http://218.30.115.246/ HTTP/1.1" 200 295 "-" "-"
xxx.xxx.xxx.xxx - - [06/Mar/2010:07:56:15 -0800] "GET http://218.30.115.246/ HTTP/1.1" 400 290 "-" "-"
(The third line is me telnetting to the server and trying to issue the same request. Note that I got a 400 error response, while the guy coming from 61.160.212.242 got 200s. Also, if you just open the http://218.30.114.246/ URL, you get back "hello" (nothing else, just 5 characters). I'm presently putting together a bootable CD with chkrootkit to run on the machine. (I found a thread that mentioned in passing that this was related to PHP, which I have running on that Apache server, but my Google-fu isn't strong enough to track down the original thread.) (After checking with chkrootkit: nothing unusual found.)
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).
I am running Ubuntu 10.04 on my laptop. I have an Apache web server running that I can access at 192.168.1.102 ("It works! This is the default web page for this server. ...").
Are there any security risks in leaving this running? Is the web server available to anyone outside my network?
I'm trying to modify an existing user so that any files they create can be at least read (although writing and execution would be nice) by any other user. The reason is because I need the daemon running my Apache server to be able to access files created by a daemon running under this user, files which will be created and accessed in real-time.
View 3 Replies View RelatedDoes anyone know any common apache 2.2 exploits and how to stop them? I am setting up a web server and want it to be secure as possible. I currently have a basic lamp server on a ubuntu server.
View 1 Replies View RelatedOk, so I have a few web apps that need to run shell commands. Heres a great example of one:
Code:
This is a PHP script getting my system volume. Herein lies the problem... www-data doesn't have permission to do this!
I changed my apache config to use MY account as the web user, and it does in fact work the way I want it to.
Obviously, I dont want to leave apache running as me, and want it to keep using www-data.... heres my question... how can I give permission for www-data to execute certain programs?
The actual file didn't exist. I am confident it came through a site but I am more curious what settings in apache affect the ability to do this?
View 2 Replies View RelatedI've set up a server for the first time today and I'm reading up on how to secure it. But I was wondering if anyone here would give me some tips from personal experience on what to do before going online with my website for the whole world to see. I'm running Ubuntu Server edition and Apache. Am I good to go with default settings or is there anything recommended that I should first do?
View 9 Replies View RelatedOnce the mod_security module gets loaded to apache, autoindexing stops to work. In a folder without index.html the server says: 403 Forbidden You don't have permission to access /TheFolder/ on this server. I was trying to find something to comment out in the /etc/httpd/modsecurity.d and in the modsecurity.conf files .. but couldnt find anything relevant. how to have mod_security on with haveing autoindexing on aswell?
View 3 Replies View RelatedI will be setting up Apache web server in DMZ and Oracle web server (Windows) in LAN. The requirement is to allow logged in visitors to view / change their details via the web site. What is the best way to configure this. Is simply allowing web server's ip to communicate with oracle server's ip (and the oracle port) is secure enough or is there a way to do this more securely?
View 6 Replies View RelatedBasically, this is not the first time it happened, but the third I would say. My trouble and concern is with this massive downloading targeting a test file of mine/client file of mine. Since my server couldn't support that many connections child process spawns, my apache server crashed.
I managed to solve it by closing the client's account, preventing the attack from continuous download. Another way I could solve it was by replacing the file they attempted to attack with 0 byte file.
I'm wondering if there is a possible solution to prevent such issue in future. I'm also not very sure what kind of attack this is. Could it be DDOS? But from what I've asked, some said it wasn't DDOSed, if it was, my whole server would go down, not only apache.
What I was curious was how these attacker found out the files that were stored on the server. These files were not leaked outside, nor there could be a possibility to access that folder because it was protected by .htaccess which deny everyone.
recently my Apache server crashes very often; by watching the error log,I've notice several signs of intrusion.So, I think the problem can be a denial of service attack against my machine.My distribution is Debian Lenny.
View 2 Replies View RelatedI'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?
I want to be able to created directories and upload files (images mostly) via a php web page. The directory structure is a throwback to windows and I really really don't want to have to change it because there are so many files/links already there.
/cust/cust_name/site/version/web (all html/php files go here)
I want to be able to edit the files with a 3rd party tool (SSH based). These are small orgs, like my church, local community club, sports team, etc., so file ownership needs to sync with the editor, not apache.
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