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14
votes
2answers
1k views

How to prevent users from extending their window of valid login

Been working on some security hardening procedures for a RedHat box, and I wanted to know if would be possible to prevent a user from changing his password, once it's expired. For one of our clients ...
13
votes
3answers
3k views

SELinux vs. AppArmor vs. grsecurity

I have to set up a server that should be as secure as possible. Which security enhancement would you use and why, SELinux, AppArmor or grsecurity? Can you give me some tips, hints, pros/cons for those ...
7
votes
5answers
5k views

Red Hat server minimal install

In a farm of virtualized Red Hat servers, there's the need to install a minimal system for security reasons. Minimal installs have several advantages (even no security related): Less exposure to ...
7
votes
5answers
3k views

Services to disable on a newly installed CentOS 5.3 machine?

I've recently installed a CentOS 5.3 machine which I'm locking down for server usage in a headless environment (no GUI will be used on the machine). The server will be used as a combined web- and ...
6
votes
3answers
6k views

CentOS 6 Minimal or Hardened Install

I am working on building some new CentOs 6 servers and creating documentation for the installation of said servers. I would like to create a base CentOS 6 server install that would be light on the ...
6
votes
2answers
13k views

Account Lockout with pam_tally2 in RHEL6

I am using pam_tally2 to lockout accounts after 3 failed logins per policy, however, the connecting user does not receive the error indicating pam_tally2's action. (Via SSH.) I expect to see on the ...
5
votes
3answers
454 views

What are some specific changes you make when hardening a new NetBSD install?

I know most of the general advice: "turn off unnecessary services", "no really, turn off unnecessary services", "least privilege", etc. I've also seen a few guides and/or tools, e.g., Bastille, for ...
4
votes
4answers
4k views

How do I secure a Dell Idrac card?

I'm trying to completely lock down a server which has to exist outside of a firewall/directly routed to the internet and whilst I have hardened the base OS to the best of my ability, I had a moment of ...
3
votes
4answers
2k views

Service to harden an Ubuntu Server

I have a webserver which is hosted on mosso- Ubuntu 8.04. It does not have Cpanel installed. I wanted know if anyone can recommend any good services to harden my server from hacking etc. I tried ...
3
votes
2answers
322 views

WebDAV Security and Hardening

What are the security ramifications that one should be aware of when considering using WebDAV? How does one go about securing it? What else should I know about it?
3
votes
1answer
114 views

Using App Pool Identity vs Local Account in IIS

I am supposed to harden web applications we have developed in our company.I decided to create separate application pool for each web site for this purpose. My question is whether using Application ...
3
votes
1answer
2k views

Account Lockout with pam_faillock in RHEL6

Previously, I asked about using pam_tally2 under RHEL6. I would like to pose this question and answer to document the recommended use of pam_faillock over pam_tally2 for the same function; What is ...
3
votes
3answers
2k views

Use Script To Edit Local Group Policy Windows Server 2012

I'm hardening a Windows Server 2012 R2 machine for serving secure web pages and following a guide that lays out multiple Local Group Policy Settings and Registry Settings. When researching how to ...
2
votes
2answers
240 views

General guide for securing windows server 2008

Is there a guide for securing windows server 2008? I seem to remember reading a MS doc on how to harden a Win2k server, but I can not find a publication for win2k8.
2
votes
1answer
116 views

Benefits of separating operating system files from user files onto different partitions

I am in the process of hardening a CentOS box, and came across an article that suggested mounting these filesystems onto different partitions: /usr /home /var and /var/tmp /tmp I was wondering what ...
2
votes
3answers
1k views

Which services to disable on a CentOs 5.8 web/database server?

I have just setup my CentOS 5.8 64 [final] server as a webserver. Specs: 2x E5620 Intel CPU, DDR3 RAM, Hardware Adaptec RAID 10, 4x SAS drives. I have installed myself: Nginx PHP-FPM MySQL ...
2
votes
5answers
292 views

Windows hardening [closed]

Can anyone point me at some good resources on Windows hardening servers and desktop? From 2000 upwards. Thanks.
2
votes
3answers
4k views

How Can I Enable MSS Group Policy Settings Windows Server 2012

In the past I have gone through a server hardening checklist on a Windows Server 2008 web server for PCI compliance. Basically there are a lot of Group Policy, Registry, and other settings that need ...
2
votes
1answer
204 views

Hardening Ubuntu with Docker.io

I am new to Docker so please keep in mind. The old way: Create cloud instance Add Ubuntu OS Provision / harden Linux via Chef Develop app locally Deploy via Capistrano or some other ...
2
votes
2answers
640 views

Searching For a Desktop Security Software to harden Windows machines, anybody?

I'm a network administrator of a small/medium network. I'm looking for a software (Free or Not) which can harden Windows Computers (XP And Win7) for the propose of hardening standalone desktop ...
2
votes
1answer
2k views

Recommendations for sysctl.conf settings to harden Linux against DDoS attacks?

A recent article from UNIXy http://blog.unixy.net/2010/08/the-penultimate-guide-to-stopping-a-ddos-attack-a-new-approach/ has suggestions to harden a Linux box against DDoS attacks. Example of ...
2
votes
3answers
91 views

SELinux restrict Apache/PHP access

I installed a minimal CentOS system with Apache, PHP and SELinux in a default configuration: SELinux status: enabled SELinuxfs mount: /sys/fs/selinux SELinux root ...
2
votes
1answer
70 views

CIS benchmark differences between 2008R2 to 2012R2

I'm looking at hardening our golden image inline with the CIS benchmarks for Windows Server 2008R2 and 2012R2. But, after looking at the two benchmark documents(registration required - sorry) from ...
2
votes
1answer
889 views

Did anyone know about update in Bastille for unix/linux?

I'm just wonder that bastille project is still active or not? which alternative tools are proper for both unix and linux? Thanky you very much
1
vote
8answers
955 views

Turning off FTP

I'm setting up a new debian server and I don't need FTP so I want to remove it. According to netstat -tap, ftp isn't listening on anything. However when I do a port scan (nmap) externally it says the ...
1
vote
3answers
5k views

Users cleaning in debian

I'm running a webserver at slicehost and decided to delete unused/unnecessary users. But I really don't know which ones are necessary for the system to work I use it as apache webserver with mysql, ...
1
vote
3answers
69 views

Picking up a lot of failed authentications for various accounts

My server is getting a lot of various failed authentication attempts for various accounts. The most common one (that I've seen ) or the root account. I have since enabled Fail2Ban and ran several ...
1
vote
3answers
525 views

ipv6 on Ubuntu server - how do I secure?

On our Ubuntu server, ipv4 & ipv6 are enabled. We have taken these steps so far. Enabled iptables & ip6tables Copied the rules exactly from our iptables to ip6tables Do we need to make ...
1
vote
4answers
4k views

Server setup - Removing unnecessary Ubuntu 10.4 LTS packages

When setting a system up as a server with Ubuntu 10.4LTS, what packages are unnecessary and could be removed (to help harden the system)? For example, I'm confident the gcc package can (and should) ...
1
vote
1answer
32 views

Hardening web server cyphers: which cypher list to choose, or how to map between Mozilla and Hynek

Until now I was only aware of Hynek Schlawack's blog post on hardening web server cyphers having a relatively short list of cyphers. But recently I found How to fix 'logjam' vulnerability in ...
1
vote
2answers
2k views

NFS server + client : Recommended hardening / final touches

We have just setup a lovely little nfs share / client for the first time. a) The UID for files on the client side, is showing up as 4294967294 when listed via ls, but the client is able to create and ...
1
vote
1answer
224 views

How to block users from seeing others processes?

Generally it's one of the functionalities of (For example) grsecurity - user sees only his own processes, and not all others. But - I'd prefer to avoid installing grsecurity - perhaps something like ...
1
vote
1answer
244 views

Outlook 2010 Security Settings and Hardening

We are looking at rolling out Outlook 2010 in the near future. What recommendations, guides, settings, tools, etc. would you recommend to secure and harden the installation and usage of Outlook 2010? ...
1
vote
1answer
69 views

Hardening DC 2003

I just wondering if any one can provide me with some docs, links, and your recommendations in how to hardening Windows DC 2003, and deploy full security on these boxes.
0
votes
2answers
310 views

Server is too optimized?

I have a linux 4gb Quad core server w/ apache that is used for this website. I notice when I go to SSH and type TOP to see load averages, they are usually around 0.80. Now from what I understand, if ...
0
votes
3answers
140 views

Different techniques to secure a server

I am trying to secure a Linux server but i even also want to know the types of vulnerabilities associated and the attacks that happen and how so that i can completely understand securing a server
0
votes
2answers
722 views

what should be limit to use for IPTABLE rate limiting for a webserver

I see on my webserver some logs as follows 203.252.157.98 - :25:02 "GET //phpmyadmin/ HTTP/1.1" 404 393 "-" "Made by ZmEu @ WhiteHat Team - www.whitehat.ro" 203.252.157.98 - :25:03 "GET ...
0
votes
2answers
1k views

What tools and/or procedures to use when hardening IIS7?

IIS6 had some tools for hardening, against attacks and holes. Does IIS7 have the same? If not, are there some standard thingst that should be done to protect it?
0
votes
1answer
180 views

prevent explorer.exe from launching internet explorer

In a Windows Terminal Server (2003 R2) where the users are not allowed to run a remote desktop, but just the applications they want (that's Citrix work), i've published "Explorer.exe" for the users to ...
0
votes
1answer
138 views

Local port access blocked by iptables

Although experienced with Linux, I'm new to iptables, having set it up following a Rackspace virtual server setup guide. Using port scans and checking remote access to required ports, I can see all ...
0
votes
1answer
37 views

Securing local repository with SSH and chroot

I've got a local Debian repository server in my network and I want my clients to upgrade, update, and install packages from it through SSH. I configured my sources.list so it would look like this : ...
0
votes
1answer
31 views

cache_dir and some hardening squid

Suppose i'm going to define multiple cache_dir such as : cache_dir ..... # disk 1 cache_dir ..... # disk 2 cache_dir ..... # disk 3 Question: Do i need to define maximum_object_size and ...
0
votes
1answer
377 views

Is debootstrap chroot safe?

I followed this tutorial http://wiki.debian.org/chroot on Debian Squeeze AMD64, to get a separated environment. This chroot is really safe? In others chroot tutorials, create a chroot for an ...
0
votes
1answer
315 views

Lock down a user on a stand-alone windows web server

I have a Windows Web Server 2008 R2 Core, which runs several web sites. There is no AD. One of the web applications requires Windows Authentication for a single user. I would like to restrict the ...
-1
votes
1answer
654 views

How do I disable unnecessary Windows services and test for stability?

When I configure a minimal Server (unselecting any role in SCW) I still have quite a number of (obscure) services running or set up as manual. Requirements in my project say that the Server shall ...
-6
votes
1answer
1k views

In standalone Windows, safely force all apps to use AppData\Local\ instead of AppData\Roaming\ and Hardening security [closed]

In "standalone" or individual windows (vista & above: Vista, Win7, Win8, Win8.1, etc OS based) computers & tablets, which are configured to use only "TCP/IP" network component, each has ...
-7
votes
2answers
860 views

How strong is parallels plesk 11 inbuilt firewall for linux os? from an newbie [closed]

I am new to Linux Dedicated server hosting and plesk panel 11 and i would like to know about inbuilt plesk 11 firewall security features and how harden it is?