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

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2
votes
3answers
38 views

Find the destination script of an inbound TCP connection on our shared webserver

We have a shared webserver which is being monitored constantly by our ZABBIX agent. On some hours of day we have unusual TCP traffic on port 80. Lets say we have over 400 connections from IP address ...
0
votes
0answers
15 views

PC in VMWARE can ping Host computer but host computer can't ping the VMWARE machine [migrated]

I'm creating PFsense lab with this diagram The Webserver can ping the outside host (PC3) but the PC3 can't ping the webserver. The firewall i'm using is PFSense. I have disabled all Window ...
1
vote
1answer
77 views

How does a browser choose which certificate to use if my web server has multiple certificates?

I'm using Apache 2.4, with two certificates, one RSA signed by CACert, and one ECC self-signed. Neither of these certificates provide a path to a broswer-trusted root certificate. My question is ...
2
votes
1answer
82 views

Best practice in securing a web server and an offsite worker

Suppose I'm hosting a web server and a separate box offsite that crunches data. The web server interacts with the worker using the worker's API over port 2888. What would be the design of a secure ...
1
vote
4answers
74 views

employing SSL even on non critical web server [duplicate]

I know that SSL should be used on web servers that need to gather credit card information etc..however, is it industry best practice to also turn on SSL even for non critical web servers? eg those ...
0
votes
0answers
36 views

Question regarding SSL / TLS / Certificates in general [duplicate]

for the last two days I played around a bit with nginx's SSL configuration. A question came up: I created asymmetric key using $ openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:4096 -keyout ...
0
votes
0answers
16 views

Is it a security risk to give read/write permissions to /Library/WebServer/Documents to my main account?

The default setting is that the apache2 root-directory Documents is owned by root and I have to enter a password each time I change it. This is why I want to give full permissions to my user account ...
0
votes
4answers
69 views

Masking IP address and port number for Web application [closed]

I have a Web application running on port 89 ( non-standard port) of a Windows 2012 R2 machine. The login page for this application needs to be accessible through a link on my website - let's call it ...
0
votes
2answers
63 views

Infected Drupal 6 website page with a php shell

I have a server with Drupal 6 which was hacked and now by accessing the main page i can see the php shell. The problem is that i could not find the shell. The site files are not infected because i ...
3
votes
2answers
92 views

Regular Expressions for common exploits

I patched for shellshock and was barraged a few days later. However, I would not have known any attempts were made at all if not for a regular expression I found on the internet. This has inspired me ...
1
vote
0answers
36 views

Domain socket authentication as in MySQL and PostgreSQL secure?

Are authentication mechanisms based on UNIX domain sockets (Linux) secure? And more specifically, are the respective MySQL and PostgreSQL implementations on Linux secure? The background for my ...
1
vote
2answers
46 views

Segregating Offline Server and Internet Connection in one pc

What I want to do: Setup a PC with two routers. One router is directly connected to the internet, the other is connected to an offline workspace server. My client will be connected to both via a ...
-1
votes
1answer
68 views

retrieve database data with application server? [closed]

retrieve database data with application server?
0
votes
1answer
55 views

Securing user supplied files in IIS

I have an Internet website running on IIS/Windows configured as follows: The website is publicly accessible for visitors to browse. A user can login and upload files. The user will be able to see ...
6
votes
4answers
949 views

How to identify the HTTP methods supported by a web server?

How can I identify the different HTTP methods supported by a web server, like OPTIONS, TRACE, etc.? I have tried the nc command on Linux. But it doesn't work. It doesn't show me the HTTP methods ...
0
votes
1answer
28 views

cd-rom distro — plus additional validation

dear security experts: we would like to create a very safe webserver. we are in awe at the sophistication and complexity of many solutions, but they don't apply to us. we are a small shop. by ...
0
votes
1answer
73 views

How to determinate if someone scanning my server?

How is possible to determinate if someone make requests with tools for pentesting? Is there any linux command?
0
votes
1answer
160 views

Exploit HTTP PUT Method in Microsoft IIS 5.0

I'm trying to test if it's possible to use the PUT method to upload content to a IIS 5.0 server. The WebDav is actualy enabled and the PUT method is allowed for public/internet users: OPTIONS ...
0
votes
3answers
121 views

Shellshocking Webservers, does anyone know of an attack-vector other than Headers?

i've see a lot of different webserver-attacks against cgi-pages, but have seen the malicious payload only in the headers, might it be User-Agent Cookies Referer Custom-Headers does anyone know if ...
0
votes
2answers
146 views

Self-signed certificates and internal cURL requests

I'm using an internal API for some commercial software we purchased and it recommends using SSL when utilizing the API; it uses cURL to achieve this and hence the user, pass and key will all be passed ...
24
votes
3answers
1k views

Is there a way to detect web server in case it's not present in HEADER?

I'm trying to detect what web server a particular website uses. For instance whether it's nginX, Apache, Tomcat and so on. I usually use Live HTTP Headers Firefox add-on. The problem is that sites ...
5
votes
2answers
345 views

Escalating from Apache shell to root

I have one noob question.I tried to exploit shellshock on my Slackware linux server, but after I connect with reverse shell and User Agent I get that I am apache user and apache user don't have too ...
0
votes
1answer
34 views

Period and direction of risk when connecting to malicious webserver

Please forgive my terminology mishaps. Recently, I tried to connect to a server over SFTP. The SSH public key response differed by 1 byte to what I was expecting, from an info page. I was tempted to ...
1
vote
1answer
59 views

Securing a VPS network with a VPN and a DMZ

I've got several VPS boxes (Digital Ocean boxes w/Ubuntu) that I would like to lock down from the outside world. I want to have several private boxes (web servers, db servers, puppet/master boxes ...
0
votes
1answer
273 views

suspicious http request in logs

I found this request in my Ubuntu 14.04 apache2 access.log: xxx.228.207.244 - - [25/Sep/2014:17:52:03 -0400] "GET ...
2
votes
1answer
61 views

securing /var/www with .htaccess

So I have a web directory running on a server and I want only people with the password to be able to get in. Is it possible to secure the web root with .htaccess? Is there any extra steps I need to ...
2
votes
2answers
67 views

Why are web servers ubiquitously configured by blacklisting inaccessible files instead of whitelisting the accessible ones?

Take a random PHP site. It is essentially guaranteed that its web server is configured as follows: serve any file from the document root, except for certain files or paths that are blacklisted. ...
0
votes
2answers
98 views

Can Subject Alternative Name(SAN) Certificate install on different Web Server or OS?

Let say: application.house.com apache tomcat : physical server email.house.com apache tomcat : virtual finance.house.com Oracle Wallet Manager : physical server ...
0
votes
1answer
210 views

High-Risk Intrusion Detected

I have an endpoint protection from Symantec. Recently, I have been receiving many Symantec Cloud Alert emails. wp-admin/admin-ajax.php?action=revslider_show_image&img=../wp-config.php They ...
0
votes
0answers
73 views

OSSEC, what is it telling me about port changes?

I've been diving into OSSEC for the last couple of months, but I feel unclear on one of it's alerts. I've provided the alert below. The main difference I see in previous output and current output is ...
2
votes
2answers
91 views

How risky is having sensitive files on webroot?

I understand that having anything sensitive under webroot is not smart; someone may be able to access it via url. However, I do not have a choice with my web host (iPage) as they limit my server space ...
0
votes
1answer
55 views

HTTPS enable for proxy server or web server

Say I have 2 separated servers which are one web server (apache) and one proxy server (nginx), I want to use HTTPS for the website running on the Apache. Do I enable SSL on apache or nginx or both? ...
0
votes
1answer
60 views

Server Security Through Constant Check-ins [closed]

I've built a system and have put a ton of work into making sure is super secure. But I have a (potentially irrational) fear that if someone were able to break into my server, they could just change ...
0
votes
0answers
40 views

securing my API: concept of accesstokens

first of all I want to excuse for the bad spelling and grammar. English is not my mothertongue. I have built a JSON communication between frontend(website) and my NodeJS webserver. I want to keep in ...
0
votes
1answer
120 views

What would cause a server to only send over 1 SSL certificate to a client? [closed]

We have a secure server that seems to only be sending over the identity certificate. Running the hostname through Qualys says that only 1 cert was provided. The intermediate had to be downloaded on ...
1
vote
1answer
108 views

Why is the HTTP Server header not used by most servers, but the User agent used by most browsers? [closed]

I've read that the Server header would disclose information, and that its use would be bad. The arguments made in that question also apply for the User agent header. So why is it still used, and not a ...
0
votes
0answers
114 views

How to stop auto-created files to happen?

I'm new to "Information Security" so I hope I'm in the right place. I'm experimenting a very disapointing problem on my hosting server: some files are automaticaly created and I don't know how. The ...
7
votes
4answers
197 views

DNS spoofing of linux distribution repositories

Question(s) Is it possible to "redirect" linux-update-repos via DNS spoofing (e.g. DNS cache poisoning) to a malicious website, so that harmful software (updates) will be installed, when running the ...
0
votes
1answer
29 views

Does serving Tomcat via Apache Webserver improve security?

This question is an ongoing discussion at work. Assume a Tomcat serving some web application and has all JMX and remote management stuff disabled. If you consider three scenarios: Tomcat serves ...
3
votes
1answer
73 views

How long do HTML password fields (sent to the server as postdata) remain in memory?

In any major server-side web framework, there is usually a mechanism to read HTML form input, e.g. in ASP, for an HTML element, <input type="text" name="the_field" />, it is ...
-2
votes
1answer
70 views

protect files on webserver, allow only internal use

I have a website and it has an audio player to play music files, the music files are hosted in a public directory. Since they are they anyome can point there and use the files on their website. Is ...
2
votes
3answers
379 views

Is there any way to block LD_PRELOAD and LD_LIBRARY_PATH on Linux?

Preferably with a vanilla Linux kernel i.e. not using SELinux or GrSecurity? Lately there has been a case of in-the-wild UNIX server malware: ...
20
votes
2answers
2k views

Should I disable http HEAD requests?

I have seen increased 'HEAD' requests in my webserver access.log. What are these requests for? Should I disable this method in my webserver configs?
1
vote
4answers
144 views

untangle server at work place privacy

When I am browsing in an environment where Untangle server is installed, can the network admin track everything I do? for example: Skype chat messages Personal emails (Gmail, Yahoo)
0
votes
1answer
56 views

benefits of xinetd for a web server

What are the pros and cons of using xinetd for a web server running on a VPS. Assume the following measures have already been taken to secure the system: system hardening, latest updates, minimal ...
0
votes
0answers
106 views

Is opportunistic encryption support optional for HTTP/2?

I'm a little unclear on the subject of opportunistic encryption of the HTTP:// address scheme in HTTP/2. According to the bug report, it looks like it's kinda optional, and an afterthought: ...
5
votes
3answers
619 views

Can allowing a web application to move, copy and/or delete files outside of the server root be a security issue?

I am new at using and programming web applications, so I wanted to ask a question. Is it safe to execute os commands like copy and mv and delete from a web app that is running on an apache, or does it ...
4
votes
2answers
170 views

You've just acquired a newly created CentOS server, what should you do to secure it?

I've just acquired a new CentOS server, which will be hosting a Ruby on rails application, it is public facing. What should I do to secure this server?
0
votes
2answers
82 views

Attack surface for a site that hosts only static content HTML and images?

What kind of attack surface is there for a site that only hosts static content: HTML, images, CSS? How can sites like this be successfully penetrated?
0
votes
2answers
61 views

What type of probing sends GET /“ data ” to a server?

During monitoring of webserver logs I've stumbled upon those standard probings for wordpress exploits etc, like No route found for "GET /wp-login.php" (uncaught exception) No route found for "GET ...