Security is not a product, but a process.

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1answer
99 views

Way to script Local Intranet settings?

There's a dialog in the "Internet Options" control panel applet if you go to the Security Tab, highlight "Local Intranet" and press "Sites" that looks something like [X] Automatically detect intranet ...
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1answer
49 views

Allow HTTP packet from specific hosts on an ec2 instance strictly

I have an ec2 instance (proxy) which is being used as http proxy server. There are some other hosts (hostA, hostB, hostC), I want the proxy server will only allow connection from those hosts. For ...
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2answers
92 views

Understanding Auth Logs on Ubuntu Server [duplicate]

I have a web application that I'm hosting on an Amazon Ubuntu server, and it has a public IP address - and very little traffic. I was observing the authorization logs in /var/log, and noticed several ...
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1answer
486 views

Is there an open source equivalent of Windows software restriction policies for Linux?

For a presentation I am doing, I am trying to find out if there is a Linux based open source application whitelisting service for Linux, Similar to software restriction policies in Windows since 2002. ...
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3answers
108 views

proftpd is accessing my.cnf

I use proftpd for virtual FTP hosting with MySQL. I've started writing fine-grained SELinux policies and found that it's trying to access my.cnf files. Question is what for and why? type=AVC ...
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2answers
309 views

Multiple POST requests to same file from same IP address

I periodically check my apache domlog to check for anomalies in GET and POST requests. Earlier today I noticed the same POST request to a login php happening two and sometimes three times a second for ...
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1answer
458 views

Content Security Policy Configuration Problems

I have a server running nginx and I would like to add CSP. However I'm encountering difficulties even after following numerous guides I will either get an error from nginx or they just don't work. ...
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2answers
78 views

Linux Server where the high security is desired [closed]

I am preparing a JAVA program that will be use to monitor a system. The program uses UDP and TCP sockets to receive and send packets over the Internet by using VPN. I will dedicate a server just for ...
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1answer
41 views

Protect against inadvertent command entry

I have a couple boxes in production and then some in a test environment. Anyone have any clever ways to protect against typing in inadvertent commands into boxes? i.e. I want to put a confirmation ...
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1answer
93 views

Iptables to lock down compromised server to a single ip [duplicate]

I have a Linux server which is compromised, I can see nasty looking perl scripts executing with root privileges. I want to get some data off it before I wipe it. How can I block all inbound and ...
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1answer
83 views

why iptables giving error when using with --src-range

I am using iptables v 1.4.8 and used following command but getting one error message on terminal # iptables -A INPUT -m iprange --src-range 10.0.4.92-10.0.4.99 -j DROP modprobe: module 'ip_tables' ...
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1answer
86 views

Opening ec2 ports using security groups

I'm trying to open all ports up to a micro instance that I have set up, but it doesn't seem to be working. This is what I have: http://i.imgur.com/PHekagS.png Using paping, I find that port 22 is ...
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2answers
47 views

https redirect to https (No Cert Warning) [duplicate]

Am I right in thinking that in order to redirect an https URL to another https URL without a certificate warning, the first https URL has to have it's own valid certificate and IP address? Am trying ...
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2answers
65 views

Managing security (Java) access in a shared environment

While developing a shared hosting solution for Java applications we have encountered an issue, since users can upload their own jars how do we restrict them from running Linux commands such as df -h ...
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1answer
155 views

Lot of Apache requests in “L” state, what could be the reason? DDOS?

I am having this in my apache server status message: LLLLLLLLLLLLLLLWLLLLLLLLWLLLLLWLLLLLLLLLLWLLLLLLLWLLLLLLLLLLLLLL WLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLWLWLLLLLLLLL ...
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3answers
97 views

Tamper-proof AWS AMI

I need to convince my customer that my server to which he submits his sensitive data runs only applications/processes approved by him. Also the customer is not allowed to get access to my server. He ...
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3answers
669 views

How to set the ulimit (fd) when you fork a process?

Normally /etc/security/limits.h only work when you login into a shell. How about when you fork a process in Linux, where is the value of Max open files of /proc/PID/limits is controlled by?
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1answer
93 views

More secure way of sending MySQL commands from a remote server on the command line

What is the most secure way of running SQL commands from a web server to a remote MySQL server from the command line. I can think of two ways: mysql --host mysql.mydomain.com --user admin --password ...
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1answer
52 views

Security of NameVirtualHost in regard to HTTP request forgery

If I understand the concept of NameVirtualHost correctly it works by reading the Host variable of every HTTP request and matching it to a ServerName in any active VirtualHost directive with the ...
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2answers
295 views

how to identify & respond to bruteforce attacks

(skip to the end for less context) I have a CentOS 6 box with a few security measures taken - disabled root login, strong passwords, and user whitelist for FTP and SSH, and fail2ban installed. I get ...
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1answer
145 views

ssh: how do I find out the total bytes send and received by ssh user

In the place I work, there are multiple users who log in to any server through ssh and perform various tasks. In general, they are supposed only to run commands on the servers, not copy files out of ...
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2answers
2k views

How do I apply special group Exchange calendar permissions?

I've got an Active Directory Security Group with a number of people in it. I'd like anyone in that group to be able to update each other's calendars. How do I go about telling Exchange (2010) to do ...
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1answer
467 views

What is the best way to join an internet pc to domain?

I need to connect a PC that has already an Internet connection via on-board LAN to a Windows domain. This domain has no Internet connection, because the data is confidential. I need to do this because ...
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2answers
300 views

postfix feed to program as root

I'm trying to get postfix to pipe stdin from an email into a script that needs to be run by root (yes I understand the security issues of doing this. no lectures, please). Content of aliases file ...
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1answer
34 views

Do I need to set up public and private keys for ssh connection

I have just set up ubuntu server. I want it to act as my git repository for my work. I have installed openssh and have been able to connect by just providing the account password. i.e name@ipaddress ...
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1answer
666 views

Root Locked Out of Ubuntu 12.04?

I may have just locked root out of my server, and am looking for help. I have a VPS web server that has been running 10.04 for the past couple of years. For security, I had disabled root login and ...
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1answer
131 views

Is there a way to get Apache to blank sensitive data from logs?

We're trying to clean up one of our systems as much as possible & have found that despite our attempts to block, users are accessing a certain part of our system through a HTTP GET with their ...
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2answers
110 views

Should I choose my hosting company's mail server, or make my own mail server on my Cloud server? (for security) [closed]

I have a commercial website on an Ubuntu web server and my hosting company has a mail server for all its customers. For security reasons, do you think I should rely on my hosting company's ...
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3answers
2k views

connecting ipads to a windows domain [duplicate]

Possible Duplicate: iPad Management Do iPads (version 1, 2, and/or 3) have the ability to connect to a windows server 2008 or 2008 R2 domain? If not, is there a way to enforce security ...
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2answers
571 views

Can I use an IP-list include file for iptable blacklisting?

I would like to block all countries except mine in iptables, that is a list with about 100.000 Entries. How can I define this blacklist file in a script, so iptables blocks all those IP ranges? ...
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1answer
68 views

a safe way to provide multiple ftp credentials?

We have a web development company and have ftp credentials for over 300 customers. Is there a method to provide access to employees without giving them username and password? Kind of how credit card ...
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2answers
543 views

Practical alternatives to split tunneling?

I have seen some IT security audits that request whether split tunneling is implemented for remote VPN users. I can appreciate the peace of mind benefits from disabling split tunneling, since you ...
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1answer
78 views

Where can I find a documented lists of permissions given when adding a user to stock groups in major distributions?

I am trying to work out a strategy to appropriately hand out certain levels of permissions to junior admins on the system across multiple distributions, especially Ubuntu Server and RedHat Enterprise ...
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2answers
73 views

Moving database to new server

I'm restoring a backup of a production database to a new server. The new server also hosts the application which makes use of the database. As such I'd like to use the same user/pass combination to ...
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2answers
153 views

Is it Possible to use a Single Certificate for a site which has many different domains

I have an ASP.NET application on IIS(Windows Azure) which has many different domains. All domains are working on http. Now, I need to use https. Whether, a single certificate is fine for all of my ...
0
votes
1answer
165 views

Whats the best way to strip grave accents from bash scripts

I have a bash script which runs as root: #!/bin/bash /var/bin/svn_co -h $1 >> /var/log/svn/status.log If the following should somehow occur, I'm in trouble. /var/svn/hooks.d/post-commit -h ...
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3answers
61 views

How can I provide secure web content to mobile devices that can't access an intranet?

I'm working with a client on development web content for their intranet. We want users to be able to access a version of the content on their mobile devices, but most of them don't have the VPN ...
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2answers
579 views

What is the best way to help stop DOS attacks

I am looking for ways to help stop DOS attacks. I'm running a linux server and looking for ways i can help limit the effect of any attacks and possibly set some limits on things without affecting ...
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2answers
112 views

When running a typical LAMP stack for a public website on EC2, what is the proper firewall setting for port 3306?

I'm reviewing the security groups on my EC2 Ubuntu instance that runs a public website on LAMP. Presently my ports are as follows: 22 (SSH) 0.0.0.0/0 80 (HTTP) 0.0.0.0/0 443 (HTTPS) 0.0.0.0/0 ...
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2answers
4k views

How to chroot VirtualHosts on a Apache server?

I have a FreeBSD server (company's OS of choice). Currently we run several websites on each of the webservers. Websites are in PHP which is run in Apache Module mode. At the Apache is not chrooted so ...
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2answers
383 views

Most secure settings for user dedicated for SSH Tunnel

Due to security reasons, I have created a user on my remote VPS only to use it for SSH tunneling. My local PC goes in hands of many others which scares me because I need to leave that SSH session ...
0
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1answer
133 views

Windows Copy and permissions

I have copied a which has Everyone permission. The duplicated file doesn't have these permissions other than the default permission. I'd like to know more about how Windows Copy defines the ACLs. It ...
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1answer
68 views

Common ways of spam files ending up in a web directory

A friend discovered a bunch of spam files in his web directory on his web host the other day. He has no idea where they came from, and I'm not quite sure either. What are common security breaches ...
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2answers
269 views

Linux or Windows Server as Gateway/Firewall [closed]

In my house, i'm running a server I use for testing purposes, and I'm planning on throwing away my knackered router, and making the server my Gateway to the internet and using it as a server for ...
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3answers
255 views

Disable, not unisntall, perl on Red Hat Enterprise 5.X?

So we found that some trojan has been the cause of our two web servers crashing once a week as we found that perl was executing dozens of malicious "gif" files spiking the memory and eventually ...
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1answer
2k views

Is someone trying to hack my site? How to block certain URLs in Nginx?

On the past few hours my server is getting pretty loaded, mostly due to a lot of load requests. I've seen this thanks to the StatCounter realtime stats, which shows that the "Came from" page is: ...
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1answer
148 views

Fail2ban Custom Port

I have a rule like this in my jail.local file: [ssh-ddos] enabled = true port = ssh,sftp filter = sshd-ddos logpath = /var/log/messages maxretry = 4 If I want to use a custom port for SSH, ...
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2answers
1k views

Large number of security events in the log

About a week ago we moved the application from one server to another (from Windows Server 2008 to Windows Server 2008 R2, different DCs, but same company). There are 12 websites on this server, but ...
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2answers
135 views

Should I ever configure a host with a public IP address to accept traffic from a private IP address?

I connect the 'net with a public static IP (my router's IP address for NAT) and a /29 subnet (for machines behind the router). On my router, I have: #sh ip route | inc x.x x.x.0.0/16 is ...
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2answers
658 views

Apache Uploads and Security

Recently it has become an issue that a user on one of our systems needs the ability to have the apache user have read and write capability to their site so that the upload portion of their site works ...