Download Hardening Linux (Volume 0) by James Turnbull PDF

By James Turnbull

After interpreting this e-book, i feel it will likely be the necessary significant other I hand out to new Linux directors, in addition to crucial approach management. the 1st 6 chapters are remarkable. i cannot say sufficient good stuff approximately them. The assurance of PAM is best than something i've got visible. The assurance of authentication, teams, clients and most sensible practices surrounding them was once first-class in addition. The logging bankruptcy on my own is perhaps definitely worth the buy of the booklet.

After the 1st part, the booklet covers extra particular themes which are of much less curiosity to me. I notice lot of individuals use e mail, of all types. bankruptcy 7, eight and nine hide e-mail, and that i simply wasn't that fascinated by it.

Chapter 10 coated securing FTP, that's great, and eleven covers Bind. i assume i ponder why a few of the subject matters have been selected. there are entire books on e mail and bind, on hand, yet there's not continuously solid fabric for another providers, like CUPS, probably a few web-based management instruments, or SELinux. The assurance of subject matters that made the desk of contents are excellent.

I might say while you're new to Linux safety, or a professional participant trying to find simply one other reference, this publication is superb.

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Additional resources for Hardening Linux (Volume 0)

Sample text

2. apps/ directory define the additional programs that users logged onto the console can run. This directory contains a collection of files, and each file corresponds to a command that users, after logging onto the console, can run as if they were root. apps/ -rw-r--r-1 root root 10 Aug 22 2003 authconfig -rw-r--r-1 root root 87 Aug 22 2003 authconfig-gtk -rw-r--r-1 root root 83 Sep 20 2003 dateconfig -rw-r--r-1 root root 64 May 29 01:31 ethereal -rw-r--r-1 root root 66 Apr 15 00:33 gdmsetup -rw-r--r-1 root root 14 Sep 26 2003 halt Whilst perhaps this model of granting extra privileges to console users makes administration for your system easier, I do not think this is a good idea from a security perspective.

Starting Services for Red Hat and Debian Service Description Remove? qxd 1/5/05 12:42 AM Page 10 10 CHAPTER 1 ■ HARDENING THE BASICS ■Tip I will talk about inetd and xinetd in Chapter 3. A lot of the services listed in Table 1-1 you can apply common sense when deciding whether to start them. The pcmcia script, for example, is required only if you have PCMCIA devices or the winbind service if you are using Samba. If you are not doing any printing, then do not start the lpd and cups daemons. My recommendations to disable particular services listed in Table 1-1 are based on my experience that these services are not required on a secured production server.

Listing 1-6. Listing init Scripts Using the chkconfig Command puppy# chkconfig --list kdcrotate 0:off 1:off ntpd 0:off 1:off courier-imap 0:off 1:off 2:off 2:off 2:on 3:off 3:on 3:on 4:off 4:off 4:on 5:off 5:on 5:on 6:off 6:off 6:off You can see from Listing 1-6 that each init script is listed together with the available run levels. An on after the run level indicates the service will be started at that run level, and an off indicates that it will not be started. To stop a service from starting, you can use the --del option.

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