Security is not a product, but a process.

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How do proxy servers filter https websites?

With my limited knowledge of HTTPS I started wondering: How do proxy servers filter HTTPS websites? I mean adding a proxy server is essentially a MITM attack which is what HTTPS was explicitly ...
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3answers
459 views

How to protect a local NTFS folder so only it's owner can access (i.e. not a local / domain admin)

What i'd like to do is to set up such folder permissions so the folder can be accessed only by a user who created it (or one, who knows his password). Is it possible? Is it secure? I tried to set ...
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4answers
236 views

Security holes in in PHP 5.2.5

My shared hosting provider uses PHP 5.2.5, which was released at the end of 2007. I would like to know the security holes of PHP 5.2.5. Where I can get them? phpinfo
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6answers
465 views

Secure data transfer from a RHEL 5 box

I have been researching this for a while but cant find and conclusive answeres. FTP - Very insecure. FTP over SSl - Not fully supported everywhere, only a few clients support it? SFTP - This is the ...
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3answers
184 views

What options do I have if my linux box is compromised? [duplicate]

Possible Duplicate: My server's been hacked EMERGENCY I have put all security meaures and log monitoring tools. Now but i don't know what to do if find out the there is some rootkit on ...
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3answers
4k views

Better way to stop/start Webmin and SSH

it would be a good idea to not have webmin running all the time... just start it via ssh when I need it... so, I just stop webmin,and leaving SSH always running... when I need to access webmin, I ...
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2answers
53 views

What IP address should I use for a device that I want to break network access to?

I have an IPMI server on a super micro motherboard that I am unable to disable. There is not even a jumper to disable this either. After seeing all of the security issues that the IPMI server they ...
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1answer
85 views

Are department-wide shares a bad idea?

Let's say an organization has a department with 10-15 users who sometimes need to share files between each other. They currently have an open share, where anyone read read / write to the share. If ...
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1answer
159 views

Helpful linux command for do some forensic on compromised linux web server [duplicate]

What are helpful linux command for do some forensic on compromised linux web server for giving out sort of information/evidence/backtrace? for example checking log, checking last file edit, suspicious ...
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3answers
2k views

Is blocking SMTP ports prevent server from sending emails?

I have a Centos server with cPanel on it. Yesterday, some hackers had successfully connected to my smpt server and sent thousand of emails from it. What I want to do is blocking every ports except ...
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2answers
318 views

Retrieve malicious IP addresses from Apache logs and block them with iptables

Im trying to keep away some attackers that try to exploit XSS vulnerabilities from my website, I have found that most of the malicious attempts start with a classic "alert(document.cookie);\" test. ...
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2answers
102 views

Can a datacenter read my passwords if I'm using KVM over IP? [closed]

Is it truth that datacenters can read my passwords over KVN over IP interface when I ask them to connect it and I'am forced to enter ssh pass/encryption pass (OS install,etc) ? I colocated the server ...
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2answers
158 views

Safely transfer files from pc with internet connection to lan without allowing any other form of communication

In the company that I work there are computers that are connected to the Internet and computers that are connected to a Local Area Network. The LAN is considered a "safe zone" and the files that ...
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3answers
476 views

Security best practice when running process as non-root user

So I'm trying to run Supervisor (http://supervisord.org/) as a non-root user. However the process outputs logs to the /var/log directory which is owned by root and has 755 permissions. Therefore ...
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1answer
240 views

How do I secure my SSH access?

I'm one of those guys who climbs up the ladder to the high dive and jumps off, then realizes he doesn't know how to swim. So I have a VPS, and I have no idea how to administer it. I understand one of ...
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4answers
864 views

The more secure iptables script imaginable. Does one exist? [closed]

I plan on buying a server soon. I'd like the server to be as secure as possible, only having POP3, SMTP, SSH and HTTP open. I know how to write an iptables script to only allow those connections and ...
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3answers
235 views

Windows 2008 Critical Vulnerabilities in Remote Desktop Could Allow Remote Code Execution

A windows server 2008 web edition that hosts some personal blogs of mine have been hacked with all my php files injected whereas the blog wasn't even active. The password is very lengthy about 50 ...
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3answers
1k views

How to give user root access without giving him root password

The scenario is this: I have a development machine I want (need) to have root access to Our admin setups the machines using his own credentials for the root user. The explanation being that if ...
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2answers
677 views

How to use a shared key and certificate for all users with OpenVPN?

I have an OpenVPN server which authenticates to an Active Directory and asks therefore each user for a username and passphrase. On top of that it also requires each user to have a client certificate ...
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2answers
1k views

Encrypting an ODBC connection

Situation: We have a SQL Server 2008 R2 database sitting in a data centre We would like to allow analysts to connect to the database and query the data using desktop based tools (e.g. Tableau) via ...
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1answer
78 views

Web Server sercurity (used only for web services)

I am using a Virtual Private Server for accessing Web-Services used only on the Mobile devices, there are many entries in the access and error log, even there is nothing on the web server. I am ...
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1answer
99 views

Win Server 2003/Terminal Services Remote Access

Office users access a win2003 server from within the office using thin clients and terminal services. In reviewing the security settings it seems, by default, all users in the 'Remote Desktop Users' ...
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2answers
124 views

Is it possible to configure a service to run as a group and add users to that group on Windows XP?

Is it possible to configure a service to run as a group and add users to that group on Windows XP? I need the service to have the permissions of the users in that group so that they can logonn, ...
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3answers
2k views

Centos Dedicated Server Security [closed]

We have clean CentOS 5.6 setup and virtualmin on it, that's all. What type of security steps would you suggest are appropriate? http://www.wiredtree.com/supportservices/servershield.php this page ...
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1answer
182 views

Locking down a box on the Internet [closed]

I'm a developer who is looking to put a new service on the Internet. I am new to administering systems and frankly I seem a little lost at where I should start with putting something on the web. My ...
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2answers
123 views

Methods to ban bots, force attacks on my server

I've been getting some bots trying to get hold of my database by mass attacking /sertup/scripts.php of various database program. I wanna ban such activities. The closest I found was this: ...
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2answers
350 views

Security and Windows Login

I'm not entirely sure this is the right place for the is question but I cannot think of another so here goes. In order to login to the windows machines at my office one must press the almighty ...
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3answers
269 views

What security precautions and configurations are needed for a production web server?

I am standing up a win server 2008R2 x64 and will be hosting a few public facing websites with IIS 7.5. I am relatively new to administering a production web server and am curious as to what ...
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2answers
102 views

Prevent UID=0 to be assigned to any other user in Linux

I wanted to know if there is a way to prevent the assignment of UID=0 to any other account other than root.
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2answers
223 views

Make https the default

I have my domain and hosting setup to use https, and no normal http. The only thing I use this for is webmail, and so I don't even want to offer normal http. At the moment, I have to manually go to ...
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5answers
584 views

Capistrano security

We are using Capistrano in some systems as a deploy system. The new sysadmin we have says that our setup is really dangerous and I would like to know how to fix it. We have a deploy user called "foo" ...
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6answers
2k views

how to check for sniffers in Ubuntu?

Somebody is accusing me that my linux ubuntu machine could be the source for a server attack. Their technique was replacing the original ssh by this patched ssh and, as such eliminated all ...
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3answers
115 views

What % of IT shops (if any) disallow Flash on their corporate desktops?

My company is considering rolling out a desktop windows application with a dependency on Flash (swf.) The product manager is concerned that IT/IS/ops shops might have a policy of not allowing flash ...
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3answers
3k views

What is the best way to setup a public and private wireless access point on the same home network? [closed]

For my home network (with internet provided from a cable modem) I would like to setup a secure wireless access point that I use for all of my personal connections (home PC, iPhone, Xbox, etc) and also ...
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3answers
71 views

Is it generally a bad idea to have other types of virtual appliances installed along side a firewall appliance?

I want to run my Firewall/NAT software (pfsense) and an internal NAS (looking at freenas right now) for my SOHO on one machine. Right now I have them separated on two different machines, but I'd like ...
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2answers
5k views

nginx restrict directory access

I have a Wordpress site running on nginx. What is the best way to restrict access to /wp-admin using nginx? Thanks
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6answers
106 views

Combining IntrAnet and HTTPS, is it useful?

I have a web server which supports only the company's Intr*a*net, not the external Int*er*net. There will be about 100 different users who will connect to a web application on this server and they ...
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4answers
3k views

Securing Guest Wireless Network

I need to setup a guest wireless network at the office for visitors to connect to. What are your recommendations in terms of how to secure it without putting too much of a support burden on myself? ...
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3answers
20k views

How to automatically set IE settings for all users?

I need to alter some settings on Internet Explorer (version 7, but potentially some users may still have version 6). Doing this manually is fine, change settings, restart IE, done. However, we have ...
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3answers
114 views

Monitor communication to outside the network

I work at a place where they have access to very sensitive data and think a lot about security. I dont want to ask bc they may lie, is there software to monitor data such as email (pop/imap AND ...
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2answers
4k views

How to disable anonymous access on LDAP

I need to secure my LDAP server and am not quite sure the best way to go about it. I am running Debian "Lenny", and using OpenLDAP (slapd). I notice that if I run: ldapsearch -x -W -b ...
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6answers
4k views

software version of the RSA SecurID?

Is there a software version of the securID fob below: I remember reading that the algorithm for the key generation had been broken & that there was a software utility available, where if you ...
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3answers
57 views

Security concerns with enabling PowerShell on a production server [closed]

I work in the software development side of an ISV. We're thinking of using PowerShell for some utilities in and around the core application (which itself is ASP.NET). One of my colleagues said to me ...
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2answers
512 views

Arp attack on my network

We have a small network of around 100 laptop/desktops and around 20 servers (sounds an overkill but these servers provide service for all our external contractors too) and we have recently noticed ...
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2answers
79 views

Does the server SSL certificate need to be kept private?

I understand that private key definitely does, but what about the certificate file? I also understand that the server sends (part of?) the certificate to a connecting client, but does it send the ...
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2answers
44 views

How can I sync servers configurations

I'm looking for a way for 1 server lcoated in Switzerland (acting as a web/db server) to share/sync files like deny.hosts and iptables rules to my other server (dns/mail) located in North America in a ...
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3answers
193 views

Is it a good idea to only allows connections to be established in the LAN->DMZ direction?

I'm trying to setup the usual thing, with a DMZ containing servers that can be accessed from the internet, and a LAN that should be as secure as possible. I happen to also have total freedom on the ...
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1answer
139 views

Is the following setuid program a security risk?

I have the following program in .c set as setuid chmod only read/execute by owner and will set it immutable, as i will the php script it invokes. #include <stdio.h> #include <stdlib.h> ...
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2answers
1k views

Trying to set up virtual hosts to block access by IP, for three domains and when using SSL on one domain

So I want all this on one server: - 3 domains / websites - SSL on one of them - nothing to be accessed by an IP address (e.g. 'domain.com' is okay, but not by just typing '123.55.44.123' into the ...
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3answers
235 views

VPS security considerations when only accessing from one IP [duplicate]

I'm running an VPS where I have deployed some projects. As I am the only person who accesses the server and I furthermore have a fixed IP i decided to configure iptables so that server access is only ...