PTR bulk DNS resolver in Perl to see what is in the name

There are many ways to do PTR resolving in bulk, and this is just one of them. It doesn't pretend to be the fastest/coolest/best, the only thing I can claim - it works. # Yuri # 19.02.2013 # this script accepts range of IP addresses to do PTr resolving for …



Bash script to generate random passwords

Here I stumbled on an intro into Bash scripting for NetOps by John Kristoff " Introduction to Shell and Perl scripting for Network Operators" and could't help but do it my way. Here it is, bash script that generates random password of printable characters, up to 15 at least. 1 2 …



Disabling SSL Deep inspection proxy in Fortigate should be easier

This one can be filed under Fortinet ‘undocumented/unwanted’ feature rather than bug.The case in question: Fortigate 80C , firmware 4 something, all subscriptions are up-to-date, no crazy configurations, all looks fine... Until client adds to his LAN some back-up device that works by gathering data from clients installed on …



md5 sha256 sha-1 tiger and whirlpool sum checker for Windows

Trying out Amazon AWS Glacier with fastglacier.com as the upload GUI app I looked at few SHA256 sum calculating tools, and found this one by Jesse Kornblum to be the best for Windows. It has some quite useful options like recursive folders calculation, file size limitation, reading file names …



Checkpoint SNX 75 does work on Mac OS X 10.8 Mountain Lion

While not mentioned explicitly in Release Notes for SNX 75 (it lists there only Mac OS X 10.7, 10.7.1, 10.7.2 Lion, 32-bit and 64-bit as supported versions) , it does work with new version of Apple Mac. Yesterday I did it for R71.40 and it …



Agressive scans from 69.175.126.170 - HD Moore is trying to save the Internet

I've been seeing this for some time so you will see it soon too. We speak here mostly about SNMP probes coming from a set of very specific IPs. If you do a search on IP you get to the webpage below (critical.io ) , explaining to the reader that it …



SCP file transfers and Checkpoint R75 problems

There is a known issue with transferring big files (bigger than 1 Mb) from/to SecurePlatform firewall by Checkpoint. The file transfer fails with some error about buffers. The problem is that Checkpoint SPLAT comes with old opensshd daemon , which has a bug in it dated 2006 ( https://bugzilla.redhat …



A bit of privacy on Youtube is now available

If you are not careful enough not to upload any identifiable videos to Youtube.com , at least make it less damaging to the people in the video by blurring faces with the new tool introduced by them : http://youtube-global.blogspot.co.il/2012/07/face-blurring-when-footage-requires.html



How to enroll Cisco VPN client with IOS CA

It is worth mentioning that Cisco IOS routers can serve as CA servers as well. The example configurations are easy to find on the cisco.com (see link below). The only trick to know not stated in the documentation - when enrolling Cisco VPN client with IOS CA the syntax you …



Check duplex and speed settings of all interfaces in one go

One of the first things you do when checking connectivity issues on the Checkpoint (or any networking gear for that matter) is to see speed and duplex parameters of the interfaces. But have you tried to do it on a firewall with 15-20 interfaces ? No fun entering one by one …