Blog: Porting OpenWrt on D-Link DNS-323 NAS (2)

I managed to finally run OpenWRT on DNS-323 :-D... It makes me very happy :-D.

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Tags: linux hardware OpenWrt dns-323

Published: 08 August 2010, 22:40 CEST
Modified: 08 August 2010, 22:55 CEST

Paper: Thesis - Ethical hacking and enhancement of information security

In this thesis penetration testing methodology is presented. Ethical hacking was performed on DNS, LDAP and 802.1X implementation. Also, set of physical tools which ethical hacker could use during penetration test is presented. New tools were developed in order to successfully complete certain tasks.
In the production system, on which ethical hacking was performed, found security issues are solved. Overall security in the production system was improved.

Written in Croatian.

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Published: 01 July 2010, 12:00 CEST
Modified: 08 August 2010, 22:38 CEST

Blog: First experiences with D-Link DNS-323 NAS

I'm a (happy? well, not yet) owner of D-Link DNS-323 revision B1 storage. More information about DNS-323 you can find here and here. In this post I will summarize basic features and describe rescue procedure after trying to install Debian on the usb memory stick. So don't try to install Debian on usb stick - it won't work !!!

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Tags: linux hardware dns-323

Published: 21 March 2010, 17:39 CET
Modified: 27 April 2010, 20:45 CEST

Tip: DNS zone transfer using dig

Some DNS servers allow database replication through insecure zone transfer, you can test your DNS server using dig command:

dig @ns2.wikimedia.org wikipedia.org axfr

Tags: security dns dig

Published: 19 April 2010, 22:00 CEST
Modified: 19 April 2010, 22:05 CEST

Tip: Kill command after x seconds

If you need to kill a command after certain amount of time in bash you could use this trick:

( /path/to/slow command with options ) & sleep 5 ; kill $!

For example, this will run 1 second:

( sleep 1 ) & sleep 5 ; kill $!

Tags: linux bash

Published: 12 April 2010, 23:45 CEST
Modified: 12 April 2010, 23:50 CEST

Tip: OpenLDAP and ppolicy overlay

If you want to enable account locking don't forget to enable rootdn. If you forget this only account locking functionality won't work.

# rootdn directive for specifying a superuser on the database. This is needed for syncrepl.
rootdn "cn=admin,dc=example,dc=com"

Tags: security openldap

Published: 23 March 2010, 14:47 CET
Modified: 23 March 2010, 14:49 CET

Blog: Porting OpenWrt on D-Link DNS-323 NAS (1)

That's right I decided to port OpenWrt on D-Link DNS-323 NAS. I'm no OpenWrt expert and there are some issues that I can't resolve by myself so please help, you can contact me here. So what is project status? Well, you can run OpenWrt with networking, but without usb and hard disk support and without write support on flash... I hope that everything will work one day, I mean if DNS-323 NAS can run Debian it must run OpenWrt also...

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Tags: linux hardware OpenWrt dns-323

Published: 21 March 2010, 20:36 CET
Modified: 22 March 2010, 01:36 CET

Blog: Extending OpenWRT with new tools

My D-Link 584T is running OpenWRT just fine for more than two months now. I have decided to rebuild OpenWRT, so it could be even more useful. For now I decided put on OpenWRT: ntpclient, etherwake, iodined, updatedd, aoetools, tcpdump and openvpn. In this post I will show how to build image containing these tools...

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Tags: linux hardware OpenWrt

Published: 24 July 2009, 20:57 CEST
Modified: 21 March 2010, 20:38 CET

Tip: sed - Edit first character in entire file

Did you ever wanted to comment out entire script? You can do it with sed like this:

sed -i 's?^?#?' file.py

and simply uncomment the entire file like this:

sed -i 's/^#//' file.py

Pretty cool...

Tags: text editor sed

Published: 20 March 2010, 21:35 CET
Modified: 20 March 2010, 21:35 CET

Paper: Seminar - PostgreSQL

In this paper I discuss some characteristics of the PostgreSQL database management system. PostgreSQL supports object-relational databases. PostgreSQL has large community and many related projects and add-ons can be found on pgfoundry.

Written in Croatian.

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Published: 01 June 2009, 12:00 CEST
Modified: 19 March 2010, 23:49 CET

Paper: Thesis - System for advertising private accommodation

The goal of this thesis was to build a system which would make easier administration and business planning for publishing private accommodation capacities. The built system enables adding new employees and customers in the system. The system monitors actions of its users and enables modification of customer information.
System users have different ranks, and each user rank has its own allowed set of actions. While creating this system the emphasis was on security and ease of usability. Implemented functions are executed without problems and the system is ready for use.

Implemented in PHP.

Written in Croatian.

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Published: 01 June 2008, 12:00 CEST
Modified: 19 March 2010, 23:49 CET

Paper: Seminar - Cryptography in the database management systems

Paper covers general cryptography theory and its usage in database management systems. Basic SQL examples are shown in Oracle 10g database management system.

Written in Croatian.

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Published: 01 June 2007, 12:00 CEST
Modified: 19 March 2010, 23:48 CET

Blog: Lenovo w500 with Ericsson F3507g on ArchLinux

Inside my laptop is Ericsson F3507g mobile broadband module. In Windows XP I could get it to work twice, all the other times the device was not recognized. But that's another story. I managed to get it run in Ubuntu, but to get it run on Arch was a little bit more demanding...

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Tags: linux hardware ArchLinux lenovo

Published: 05 August 2009, 20:27 CEST
Modified: 19 March 2010, 23:46 CET

Blog: OpenVPN on OpenWRT from scratch

There aren't many OpenVPN on OpenWRT tutorials that I have found. And all of them use static keys for secure VPN connection. That is not the best practice. I'll describe how to get OpenVPN running on OpenWRT using dynamic encryption keys for secure VPN connection.

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Tags: linux security hardware OpenWrt OpenVPN

Published: 25 July 2009, 01:08 CEST
Modified: 19 March 2010, 23:42 CET

Blog: OpenWRT and D-Link DSL-584T

I decided to put OpenWRT on spare D-Link 584T dsl router. 584T supports ADSL2/ADSL2+, has 4 10/100Mbps Ethernet switch ports, TI AR7 CPU, 16MB SDRAM Memory and 4MB Flash Memory what is more than enough for OpenWRT...

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Tags: linux hardware OpenWrt

Published: 14 June 2009, 23:31 CEST
Modified: 19 March 2010, 23:36 CET

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