-5
votes
0answers
23 views

Guidelines and checklist for hardening Linux server installations [closed]

Please use this question to add suggestions and share your expertise in creating a community driven set of guidelines and checklist for hardening Linux server installations. Thanks a ton :)
24
votes
7answers
2k views

Is it best practices to have separate login for a domain for domain admins?

I typically like to set up separate logins for myself, one with regular user permissions, and a separate one for administrative tasks. For example, if the domain was XXXX, I'd set up a XXXX\bpeikes ...
1
vote
1answer
67 views

Why is PHP open_basedir not considered a security model

On servers doing shared web hosting, or sharing the PHP environment between different PHP applications, I usually implement a security policy that uses PHP open_basedir to restrict each user to ...
1
vote
2answers
53 views

Should I change root password

I manage about 50 servers mostly by remote access using ssh on a custom port (root login disabled and users need a public/private key to log in, password login are disabled). each servers have a ...
30
votes
7answers
2k views

What would you do if you realized your email hosting provider could see your passwords?

We received an email last year from our hosting provider regarding one of our accounts- it had been compromised and used to deliver a rather generous helping of spam. Apparently, the user had reset ...
1
vote
1answer
301 views

what would be a better practice instead of chmod g+r /etc/shadow so I can use Unix user/group database for Jenkins authentication?

I don't want to run Jenkins as root, nor giving public access (or even group access) to /etc/shadow seems to a good idea. as suggested by "Manage Jenkins" when selecting Linux user/group database: ...
4
votes
3answers
109 views

What protocol should be followed if website is actively under attack?

When you have just detected your website is currently under a hack attack that is attempting to penetrate your website, I am not including Denial of service in my question, what do you do? Are there ...
10
votes
3answers
483 views

Cisco ASA and multiple VLANs

I currently manage 6 Cisco ASA devices (2 pairs of 5510s and 1 pair of 5550s). They all work quite nicely and are stable so this is more of a best-practice advice question rather then "OMG it's ...
4
votes
1answer
82 views

A separate user for each task?

I just got a VPS sver the other day, I'm new to server administration, but not that new to Ubuntu (11.04). I use it in my living room as the HTPC, and I had a previous VPS that I used on and off for a ...
3
votes
2answers
274 views

Internal Network/Server Separation Best Practices

I have a block of 5 static IP's, and am going to be running a exchange and web server on-site. I am wondering if I should separate the web server IP, Mail IP, and internal network IP. What would the ...
1
vote
1answer
202 views

Firewall Security Guidelines

I'm looking for some best practices or Security guidelines for Firewall and VPN. Trying to study a little more about network security and write a sort of decalogue (set of rules). Usefull to follow ...
10
votes
5answers
475 views

Tips to gracefully take over a (UNIX) production server

After months of neglect, e-mail flames and management battles our current sysadmin was fired and handed over "the server credentials" to me. Such credentials consist in a root password and nothing ...
3
votes
2answers
2k views

How can I check access of a Group/User in AD before I delete it?

I'm cleaning up an inherited domain that is not well documented. How can I check that a particular group or user has no ACEs across the AD? Things like searching DACL/SACL for AD objects and file ...
1
vote
2answers
644 views

When is it not worth putting Apache in a chroot jail?

I don't mean to question the well established security precaution of putting apache in a chroot-jail in most scenarios but in my scenario I have doubts. We have a virtual server hosting a single ...
18
votes
6answers
1k views

Bad to be logged in as admin all the time?

At the office where I work, three of the other members of the IT staff are logged into their computers all the time with accounts that are members of the domain administrators group. I have serious ...
10
votes
5answers
11k views

A secure, standard iptables rule-set for a basic HTTP(s) webserver

I have been trying to put together a basic server iptables script that will work for most sites just running a basic webserver using HTTP(S) and SSH (ports 80, 443, & 22). After all, most VPS only ...