Security is not a product, but a process.

learn more… | top users | synonyms (2)

3
votes
1answer
350 views

Is Exchange protected from/allow back dated emails?

Does Exchange Server adequately protect against backdating items in a mailbox folder? I want to determine from an auditing perspective what level of risk exists/what trust can be put into Exchange ...
3
votes
1answer
206 views

Grsecurity's RBAC policy for scripts

I have some problems with set right policy for my gentoo-based system. I have no idea how can I add permissions for everything which was started by /root/scripts/autosync. I am getting error like: ...
2
votes
1answer
286 views

Windows 2008 R2 Server Security Log filling with event 521

I understand that status code 0xc0000008 means Invalid Handle. How do you resolve this issue (besides a restart)? What is the best way to determine the cause for this? Log Name: Security ...
2
votes
1answer
80 views

wildcard ssl cert. giving error in IE

have a wildcard ssl cert issued to: *.domain.com The cert. is used on 4 virtual hosts in apache2: mail.domain.com gis.domain.com data.domain.com timecard.domain.com Firfox works great, no ...
2
votes
1answer
418 views

error in system log - Succeeded authorizing right

Just installed a fresh 10.8.2 server running contacts, DNS, Mail, Open Dir, Profile Manager and Websites. The machine is primerally used for mail which is all fine and as far as i can see there are no ...
2
votes
1answer
337 views

Problems with disabled ssl version 2 in ubuntu server. Can I also disable ssl version 3 to solve problems?

I recently set up a Ubuntu 12.10 server for a service which I used to run on a 12.04 machine. Since Ubuntu 10.10 SSLv2 seems to be disabled because of known security reasons. If i run curl against ...
2
votes
1answer
45 views

Is it possible to change User's Home Directorys permission in OSX?

Most of your staff uses OSX as main operation system. The problem is that recently we were attacked with some odd malware: users are getting zip-file via mail, and when they open this zip file, they ...
2
votes
1answer
519 views

Best practices for LDAP and DMZ

We are in the process of setting up a DMZ and I have stumbled into the question of how to handle machines that need to have ports exposed to the internet, but at the same time be able to make LDAP ...
2
votes
1answer
301 views

SSH keys stopped working, other oddities - was I hacked?

I've been running a CentOS6 server with a local colocation company for several months. I had OpenSSL setup to allow only my keys when logging in and I had no issue until recently. I also have webmin ...
2
votes
1answer
452 views

Node.js with SSL/TLS protocol v1.2

I would like to use TLS 1.2 on my node.js server. I'm currently using openssl 1.0.0e. If I upgrade to openssl 1.0.1, do I need to rebuild node.js to upgrade to TLS 1.2? Are there configuration or ...
2
votes
1answer
104 views

Securing access to virtual directories with valid users determined by part of the URL

I'm not a very experienced Apache sysadmin (fell in to the role as I was the only person who knew anything at all about it!) and I'm really stuck with this problem. Thanks to an over-zealous salesman ...
2
votes
1answer
246 views

IPSec between OS X clients and Windows Server (native, no 3rd party)

I would like to connect Mac OS X (Lion) with Windows Server 2008 (R2) using IPSec natively. Simplest possible settings: No certificates, no tools, no specials. Just a Windows Server with IPSec ...
2
votes
1answer
102 views

Single IP address accessing private URLs in emails I'm sending

I'm the IT/programmer guy at a small translation company. I just sent out emails to our translators around the world with an unique URL for them to come into our site and update their password. eg: ...
2
votes
1answer
296 views

Securing an Apache Setup with a Fresh Ubuntu Web Server with users and permissions

I have a virtual Server with Ubunto 10.04 on. My host Mediatemple have a few guides on trying to secure the apache config, but I think they are missing some details, or at least it makes no sense to ...
2
votes
1answer
402 views

What are the security implications of using allow.sysvipc in a FreeBSD jail

The man page for jail says that allow.sysvipc enables "System V primitives [to] share a single namespace across the host and jail environments..." thus "... processes within a jail would be able to ...
2
votes
1answer
147 views

SQL Server Bulk Insert Issue on Windows7

I’ve got an application that uses SQL Server Express 2005 SP3. This application is distributed to several hundred users, each of whom is running XP. However, our company will be moving to Windows7 ...
2
votes
1answer
179 views

How Frequent is Centos C5 Testing Repo updated?

May I know how frequent does Centos Dev Repo (C5 Testing Repo) update the patches? or Where can I find this information? Thanks.
1
vote
1answer
95 views

Restricting the network access of Docker container

I'm in the process of creating an SFTP only Docker container, one that will be used by multiple people for the sole purpose of uploading and managing files in their own Chrooted Environment. On ...
1
vote
1answer
31 views

How do I find what PHP script is changing the file

I have apache installed with mod_php PHP5. I've been able to find out that apache process is changing my .htaccess and index.php files in /var/www directory. All files in this directory are owned by ...
1
vote
1answer
161 views

JAVA blocks File Manager in Webmin

There's a file manager tool in webmin that is based on java platform. After I set up my VPS, I get the security warning, the connection to this website is untrusted and when I hit continues, I see ...
1
vote
1answer
19 views

Disabling network access for a group of users but allowing smtp only

We have an environment where our users ssh into the system and their shell is set to simply launch Mutt on their $HOME/Maildir. We want to restrict our users to only be able to send/receive mail. We ...
1
vote
1answer
128 views

unable to switch off expose_php in ubuntu 14.04 with nginx and php-fpm

According to phpinfo: Loaded Configuration File: /etc/php5/fpm/php.ini # grep expose_php /etc/php5/fpm -R /etc/php5/fpm/php.ini:expose_php = Off ...
1
vote
1answer
334 views

SELinux permissions for LogRotate and Apache

With the directory structure: /www/live/website1/app/ /www/live/website1/files/ /www/live/website1/logs/ Where Apache needs at least the following access: app: read-only access, but read-write is ...
1
vote
1answer
26 views

Hierarchy of Scanning Outgoing Mails on a Secure Email Gateway

Good day. Can anyone help me determine what could be the standard hierarchy of scanning outgoing mails on a secure email gateway (regardless 9f the vendor)? Should mails be scanned by policies before ...
1
vote
1answer
89 views

Secure installation of KVM VPS?

I'm going to install Debian Wheezy on a KVM VPS. VNC access to console is enabled, and by sniffing network traffic when connecting, I see VNC password is encrypted but everything else is sent in plain ...
1
vote
1answer
404 views

AWS: network ACL blocks outbound traffic

I am implementing a REST service in Amazon AWS. The internal servlets listen on numerous ports like 8080 and 9000, and an Apache configured as a reverse proxy serves them with proper URL schema using ...
1
vote
1answer
186 views

When is a user considered “Everyone” in the “Access this computer from the network” policy

I am a bit puzzled by the existance of the "Everyone" group in this policy. Per http://technet.microsoft.com/en-us/magazine/dd637754.aspx: The Everyone identity All interactive, network, dial-up, ...
1
vote
1answer
528 views

Bitlocker drive encryption on AWS Windows instance

I'm trying to figure out how best to protect the data of a single Windows Server 2012 instance on AWS and according to "AWS_Securing_Data_at_Rest_with_Encryption.pdf" it says: "Encrypting Amazon ...
1
vote
1answer
366 views

Can a windows service running with network service or local system account, updated active directory container?

I have two windows services (one running as network service and the other as local system) - because of some architecture reasons these cannot run under domain user account. And there will be a store ...
1
vote
1answer
52 views

Outbound ports for a firewall for webserver and db server

I have an environment where there is one firewall, and there is a secure segment and a DMZ segment behind it. There is a bunch of servers in the secure segment - DB server, the QA server, etc and ...
1
vote
1answer
414 views

Limit simultaneous call per user in Asterisk

I want to limit simultaneous calls per extensions in Asterisk for security reasons. For example when a user is on the call no body else would be able to make a call by that extension. How can I ...
1
vote
1answer
87 views

Which way is more secure: apache:admin or folder group owner:apache?

I have been learning in recent days how to set up var/www/ permissions. I understand the common solution is set a group owner of all new folders to apache via sticky bit. How about giving the Apache ...
1
vote
1answer
179 views

I want to find a way to visualise security groups and their members

I hope someone can help... I want to find a way to visualise security groups and their members, and be able to show that to users in a simple format for discussion. I have a simple matrix in Excel ...
1
vote
1answer
84 views

How does fastCGI PHP alter a file and escape detection by auditd?

The other day I set up a little shell script on a Debian server to send me an email when files change; it looks like this: #!/bin/sh items=`find /var/www/vhosts -regex ".*/httpdocs/.*" -newer ...
1
vote
1answer
178 views

Windows 7: Allow installation of software by non-admins?

I'm running a public library with PCs available for people to use. I'm setting up the next upgrade for the PCs, which will be running Windows 7. We use Deepfreeze to maintain the PC's state (a brief ...
1
vote
1answer
316 views

How to find which local process is sending spam on a Windows Server 2008 server

I am managing a Win Server 2008 system with a number of hosted web sites. Recently I found that something was sending spam through our SMTP server. The logs indicate that the connections were being ...
1
vote
1answer
65 views

Forwarding access to a subset of ssh-agent identitites

I work for two companies (let's call them RedCorp and BlueCorp). They both trust me but they don't trust each other, and I don't want to expose either's secrets to the other. My laptop's ssh-agent ...
1
vote
1answer
440 views

How should I manually add IP addresses to denyhosts?

I have a few IP addresses I want to add manually to denyhosts because they're huge sources of inbound spam. What's the best way to do this? Or should I not be messing with it? I want to manually ...
1
vote
1answer
299 views

NIS: which mechanism hides shadow.byname for unpriviledged users?

On some Linux box (SLES 11.1) which is a NIS client I can do as root: ypcat shadow.byname and get output, i.e. some lines with the encrypted passwords, amongst other information. On the same Linux ...
1
vote
1answer
93 views

Kerberos credential cache type “DIR:”

How do I set the MIT Kerberos 5 credential cache type to "DIR:"? See Release Notes at http://web.mit.edu/kerberos/krb5-1.10/ "Major changes in 1.10: Add the DIR credential cache type, which can hold ...
1
vote
1answer
157 views

API exposing services running on LAN to serve website in DMZ

I have a team of developers who are writing both an intranet and external website. The website consists of two servers and a load balancer, inside a DMZ. The DMZ has a pinhole open to the LAN ...
1
vote
1answer
632 views

Using a Group Managed Service Account (gMSA) for a scheduled task

Back in Windows Server 2008 R2, when stand-alone Managed Service Accounts (sMSA) were new, they could not be used to execute scheduled tasks. In Windows Server 2012 however, there is a new type of ...
1
vote
1answer
47 views

Exchange 2007: Which permissions required to change folder permissions for all mailboxes?

Which permission(s) are required to modify permissions on folders in all mailboxes in Exchange 2007? I'm looking a least-privilege setup. I've seen hints pointing towards that the role Organizational ...
1
vote
1answer
327 views

AWS EC2 security group source

I'm currently trying to configure a security group and allow MS SQL connections from my other instance. I want to be able to specify the security group's name as the source. But the connection is not ...
1
vote
1answer
166 views

TCP forwarding over SSH with socat or any other tcp forwarder, on sshd with tcp forwarding disabled

What I am trying to do is have a user that can port forward, but only to a certain host and port. I've disabled TCP forwarding over ssh for that user, and according to the manpage for sshd_config I ...
1
vote
1answer
422 views

Mysterious login attempts to windows server

I have a Windows 2008R2 server that is reporting failed login attempts from a number of workstations on our network. Some event log details: Event ID 4625, Status: 0xc000006d, Sub Status: 0xc0000064 ...
1
vote
1answer
315 views

Security issues/risks connecting from IIS7.5 to SQL Server 2008+ using Machine Account (DOMAIN\MACHINENAME$)

I'm working with a group of engineers doing .NET 4 / MVC 3 development, using Windows 7 Enterprise and IIS 7.5 locally, and connecting to MSSQL 2008+ dev/testing databases. The databases are remote ...
1
vote
1answer
144 views

FTP SITE CHMOD Error

When trying to edit file/folder permissions via FTP I am getting the error: 505 Security server forbids SITE commands. Contact admin. I am currently using VSFTPD with the config value ...
1
vote
1answer
358 views

How to secure a Windows SBS Server against fraudulant login attempts?

I administer a Windows Small Business Server 2003 R2 server for a small business. The only ports that this server has exposed to the internet are SSL and the RDP tunnelling port used by the SBS remote ...
1
vote
1answer
61 views

multi-purpose server - security

running ubuntu server 10.04. This box is both a web (apache2) and vpn (openvpn) server. Here is how the network is currently configured. router 192.168.1.1 | | LAN | | ubuntu server 192.168.1.2 NAS ...