Articles tagged with #awk weekly




Scan of the week – scan by country scan by continent

Dis+claimer - all this stuff I bring to your attention is for educational purposes only, and what may be fine and ok here and for me can easily get you somewhere else in trouble so use your discretion here . Happy scanning. "...Don't know much about geography" as the song goes …



awk weekly – Checkpoint Anti Spam statistics or viva les Open Relays

Goooood day everyone again, today I have had another fight with the spam that my client fell victim of. Once upon a time there was not so powerful UTM providing internet to not so crowded office in not so security-aware Central Europe. All would be good and well if not …



SSH login alert by mail Linux or Unix based systems

You can get mail lerts on SSH login to any Linux server using the script below. This script sends mail to predefined email address each time someone successfully logs in by SSH to the machine. I take advantage here of the built-in feature of the OpenSSH daemon – if you create …



Ping – setting don't fragment bit in Linux/FreeBSD/Solaris/Cisco/Juniper

Linux FreeBSD Solaris CISCO routers (IOS) Juniper routers (JunOS) Ping. Many times while debugging network problems of various kinds you need to send some packets of desirable size and don’t fragment bit being set. I list below how to do it for the different equipment/OSes. Let’s start …



Cisco routers ip accounting to see most bandwidth abusing connections

First of all, Happy New year everyone ! As I promised before (last year :) I'll look at ip accounting in Cisco world. I'll say it at the start - accounting being with us since IOS 10.0 is getting pushed aside by the powerful Netflow feature. And while it is nowhere being …