A system whose primary function is to deliver web pages on request to clients.

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1answer
607 views

Can closing port 80 lead to more security?

If a website is running on HTTPS only, is it reasonable to close port 80 of the web server and only leave port 443 open? Does this action provide more security for the website?
6
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3answers
3k views

Advantages of separating Web server from Database

What are the security advantages of installing the database of a web application on a server other than the one containing the web server?
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3answers
91 views

Why pull upgrade from production server rather pushing them from development server?

I am reading a book on security which suggest that if you have both development and production server and if you make some change, you should pull them from production server rather pushing them from ...
1
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1answer
153 views

Is authentication through proxy sites safer?

usually in office or wherever whenever we are blocked with gmail and facebook websites,we used to browse the site with the proxy sites,we used to pass our login data through proxy sites,my question is ...
2
votes
2answers
535 views

Does reverse proxy between two web servers impact security of both?

Situation: Consider the site: example.com, hosted at web server A. A WordPress blog is to be installed on a different web server, B. In order to route a WordPress installation to a subdirectory on ...
4
votes
1answer
101 views

Dangerous to open a unix socket within www root?

My web server is chrooted into /var/www, and its contents are available over the network. One of my web applications needs access to a unix socket, and so that socket needs to be somewhere in ...
0
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1answer
106 views

Different certificate information for the same website?

Apologies for the funny title, I'll try to give a better explanation here :) I have just noticed something weird with regards to a website certificate: if I go to https://www.anobii.com/login using ...
7
votes
5answers
1k views

Malware code added when site viewed externally

Please see second followup at the bottom! (Now with added real malicious code! ...ish) Prompted by this question, I've noticed that my university's student charity organisation has an interesting ...
14
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5answers
12k views

What is the best practice for placing DataBase servers in secure network topologies

I have a classic DMZ architecture: My webserver is placed in the DMZ. The webserver needs to communicate with a database server. This database server is the most critical component of my network ...
0
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1answer
563 views

Possible ways of exploiting PHP register_globals [closed]

I have a PHP script that executes a bunch of commands to verify that a user is logged. if (( isset ($password) && $password!="" && auth($password,$hidden_password)==1) || ...
1
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0answers
42 views

How to manage security for multiple PC and VM?

I have a firewall VM which creates I have used to setup subnet for different purposes. For example: (fake ips, of course) 1.1.2.1/24 DMZ 1.1.3.1/24 Internal 1.1.5.1/24 security/logging I use ...
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1answer
199 views

What is LFI vulnerability

LFI: Local file inclusion. After going through many tutorials I have two things I can/t figure out: checking the vulnerability: I don't understand what makes a website vulnerable or not. For ...
4
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1answer
1k views

Why does Directory traversal attack %C0%AF work?

Introduction: I am trying to learn the basics of Directory Traversal. Question: While trying to understand the 2-Byte Unicode conversion of characters, I came across this_SANS ARTICLE that explains ...
2
votes
2answers
897 views

What is the ultimate goal of hacking a webserver? [closed]

Recently I noticed a lot of traffic generated by automated bots that were checking for vulnerabilities in my web server. They were mainly looking for ways to hack into plesk/wordpress which I don't ...
10
votes
5answers
10k views

Benefits of identifying clients based upon the “X-Forwarded-For” or similar HTTP header in addition to Client IP

The X-Forwarded-For header is used by some HTTP proxies to identify the IP address of the client. The wiki page (linked above) mentions that ISPs may use this header as well. In addition there are a ...
6
votes
3answers
1k views

What's involved in taking over someone else's domain name?

I'm asking this for purely academic reasons. I know that there are domain record lists and whatnot, but I'm trying to understand the exact structure of how DNS works and where someone can potentially ...
1
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3answers
656 views

How to detect anomalous activity in web server traffic?

I'm wondering how to successfully detect malicious activity in my web server traffic? Could you point me out some popular solutions which can help me to detect attacks on my web application? I ...
0
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1answer
68 views

What security exposure (if any) can result from lots of apparently odd referrers in server log

I see relatively many referrers such as the following (as reported by Webalizer) in a web server log. The server is located outside Russia and it's a small one. 8 3 http://tiandeural.ru/ 19 ...
25
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5answers
21k views

What ciphers should I use in my web server after I configure my SSL certificate?

There are many great questions that ask what is the best certificate to use for a website; but once the certificate is purchased, there is also the possibility to choose or edit the Cipher list. ...
4
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1answer
305 views

Increased HEAD traffic to my website

In the last few weeks I have been getting an increased HEAD traffic to my website of the form HEAD / HTTP/1.0" 200 0 "-" "-" This just returns the details of my web server, right? The IPs are from ...
7
votes
1answer
216 views

Why Apache runs as unprivileged user?

Apache Web server as a security measure relinquishes its system privileges and runs as a normal unprivileged user before accepting clients over a networks. My Question is How this measure prevents ...
3
votes
2answers
714 views

Is it possible to steal a non secure Cookie when the Web Server (IIS) only allows Https?

Is it possible to steal a non secure Cookie (Secure Flag is false) when the Web Server (IIS) only allows Https?
3
votes
1answer
1k views

How does Windows/IIS keep a certificate protected or should I never run Apache Webserver on a Windows server?

If I follow the reasoning of a colleague it seems you should never run Apache Webserver or Tomcat on a Windows server if you want to keep the https certificate safe. Let me explain before this ...
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1answer
184 views

Would PGP/GPG have been a better choice than SSL for browsers and http servers to encrypt traffic? [closed]

I was curious recently when I heard that SSL had supposedly been broken by a certain rogue government agency, why SSL was chosen in the first place. Could it be that PGP would have been a more secure ...
21
votes
7answers
1k views

How can I protect a WordPress installation?

How do you go about protecting a default WordPress installation? What checklist do you use, best practices, tips and tricks, etc? Any recommendations on plugins, third-party tools are welcome.
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3answers
489 views

Can my customer's ISP trace who visited my business website?

I own a private business and a web site with a domain name hosted with Godaddy US. I live in Europe. I want to know if the various ISP of my customers in my country can find out who visited my web ...
0
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1answer
2k views

What methods are there of protecting a VPS from DDOS attacks? [duplicate]

I was just wondering what would be the best way to stop a VPS from being attacked, bandwidth would be a problem in this case so methods that reduce the amount of incoming attacks and stop sending ...
3
votes
1answer
8k views

Explanation of open ports

I've run metasploit against my web-server and it found several opened ports that I didn't know. Please note that I have a firewall and IPSec configured but they were disabled just for testing ...
1
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2answers
360 views

PCI Compliance Distibution

I run a small e-commerce website hosted on a dedicated server with Debian 6 Squeeze. I need to become PCI compliant (the card industry standard for security). Therefore I have registered with ...
1
vote
1answer
841 views

Security implications of adding all domains to CORS (i.e. Access-Control-Allow-Origin: *) [duplicate]

I am curious of what all the security implications are if I set the following two HTTP response CORS headers; Access-Control-Allow-Origin: * Access-Control-Allow-Credentials: false The only ...
2
votes
2answers
673 views

Managing and deploying web app passwords

What are some best practices for managing and deploying web app passwords and private keys? E.g. the password to access a database or external services like the Facebook API. I'm referring generally ...
7
votes
3answers
6k views

When is it appropriate to SSL Encrypt Database connections?

Let's say I have a web server I setup, and then a database server. However, they are communicating locally and are behind firewall. In my opinion, no SSL is needed here right? The only time to use ...
2
votes
3answers
164 views

Website Authenticity/Verification without SSL

Are there any other ways of verifying the web server you're visiting is actually the correct one? For example, if a domain name's DNS was hypothetically hijacked, and users were directed to a phishing ...
0
votes
1answer
347 views

Can query string command line exploits in older CGI implementations of PHP be protected against without updating PHP versions?

We recently received this from a security audit: PHP is a general purpose scripting language that can be embedded into HTML. A vulnerability exists in PHP versions prior to 5.3.12 and 5.4.2 due to ...
0
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1answer
108 views

How to investigate this anomaly?

According to the IT managers, this problem is neither at the server nor at the client but is suspected to be somewhere inbetween e.g. some DNS server that has been infected. Do you recognize this ...
59
votes
13answers
14k views

What are the pros and cons of site wide SSL (https)?

What are the pros and cons of encrypting all HTTP traffic for the whole site through SSL, as opposed to SSL on just the login page?
6
votes
3answers
6k views

How can I block an IP, if I'm getting many http requests in a second?

If some one tried force burst attack on my website, how can I block them? Ideally, I want to block an IP if I have many http/Apache requests in a second.
0
votes
1answer
68 views

How reliable is virtual hosting?

Web servers such as Apache and nginx support virtual hosting. To the users of websites on a shared server, they will not know that another websites exists on the same server. I have been wondering for ...
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votes
1answer
266 views

Location of server affects the speed of page loading? [closed]

i live in a country but i make a website for another country's users. The web hosting company has server in both of the countries. So where should i buy? Does it affects where the server is depending ...
3
votes
1answer
473 views

What steps need to do to identify security hole

I use VPS hosting. Installed CentOS 6 and ZPanel according to this tutorial http://www.zvps.co.uk/zpanelcp/centos-6 Received warning from hosting provider: This URL has been identified as a phishing ...
10
votes
4answers
7k views

Security measures against packet sniffing

I work in a environment where packet sniffing can be easily done . I was worried about my confidential data . Please suggest how is it done and precaution which i can take at client level.
8
votes
5answers
1k views

Securing Debian Apache PHP Server

I have Debian Apache PHP server. I want to secure him after the classic installation process. My usual steps are : List item update all packages remove all unnecessary services like named, portmap, ...
2
votes
1answer
1k views

Expose web service in a secure manner

Requirement I have a web service I need to expose on the DMZ for external communication. The web service communicates directly with a critical database that sits on an internal net. Current ...
0
votes
1answer
99 views

How to track MAC policy violations back to HTTP request?

Suppose there is a web application under public load that runs under a very restrictive MAC (e.g., SELinux, TOMOYO, Grsecurity) policy. Suppose we detect and log a MAC policy violation like a file ...
2
votes
1answer
1k views

TCP syn attack prevention

I am new to implementing information security. However i am trying to harden a windows server.I am using regedit to create parameters like SynAttackProtect,TcpMaxHalfOpen and TcpMaxHalfOpenRetried and ...
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votes
1answer
114 views

Free Alternatives in Web-Application Mapping Software [closed]

Im new to hacking, i have reached a chapter in my book "the web applications hackers handbook" where im about to start bypassing client-side and actually attacking different technologies well before ...
0
votes
2answers
560 views

Is it illegal to use Fake User-agents? [closed]

Is it illegal to impersonate user-agents when you are crawling a website? If so, what and how a legal action can be taken against the faking requester? Is this law applies only for crawlers or a user ...
0
votes
1answer
219 views

SSL Auth to proxy using Certificate on Client-side

The question may need to be reworded. The server-side is set up with Squid3 acting as an Authenticating proxy by way of LDAP. I did this for testing purposes to make sure everything was working. I ...
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1answer
165 views

Security Standards for storing private customer data

A certain government regulation in my country mandates all non-resident donors to provide a copy of their identification (usually, the passport). So, we ask the donors to upload a copy of their ...
0
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1answer
351 views

How could `iptables -F` lock me out of the server? [closed]

I was just configuring IPtables and whilst doing so, had the default chain policies set to ACCEPT, but when happy with the generated rules I changed that to DROP for all chains. I did not run ...