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How stuff connect, protocols, configurations etc.
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IPTables Firewall Script V2.0 – major release

ContentsBest Firewall Ever :) NOTE: Very Restrictive, this will allow only what you really define to be allowed. Best Firewall Ever [cc lang="BASH"] #!/bin/sh #***************************************************************** #AlbanianWizard Iptables Firewall Script v 2.0 [re-design] #Tested against most nmap personalised scans. #Author : Arditi #License : GPLv3 #Contact : arditi[nospam]hush.ai #WARNINGS: You must be root to run this, #  Full Article…

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IPTables Command Reference short command reference

ContentsShort IPTables command reference. Short IPTables command reference. Short Useful Commands iptables-save | less (list the configuration and browse throw it) iptables -nvL “VPNTRAFFIC” (for listing only the chain of your interest) iptables-save > beforechange (save the current iptables settings & chains to a file) iptables-restore < beforechange (restore the settings back to the “beforechange”  Full Article…

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VLAN tutorial | How VLAN Works – VLAN Configuration Linux

ContentsVLAN TheoryVLAN Configuration VLAN Theory Before we understand what VLAN (Virtual Local Area Network) is we should understand what an LAN (Local Area Network) is. Here we have an LAN In this case, we have a router 192.168.0.1/24 and 3 switches that are physically separating our network, but at network configuration level they have all  Full Article…

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How to read Tcpdump Output | Tcpdump Advanced Use

ContentsTcpdump Advanced UseMonitoring ICMP-Traffic with tcpdumpMonitoring TCP-Traffic with Tcpdump How to read Tcpdump Output Continuing our tcpdump series (read this if you are new here) we will present an easy to understand how to about reading tcpdump output and running advanced commands for and advanced tcpdump use. First we need a packet, I used from  Full Article…

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Open-Source HotSpot Anatomy – ChilliSpot, Radius and Postgres

ContentsPrefaceHotSpotNAS / ChilliSpotPostgreSqlWork Flow Diagram Preface This is the most comprehensive material that you fill find in the “!wild net!” , it will explain in theory how stuff works and how components fit with each-other. For a techical aproach and “how to make an hostpost” you must wait. HotSpot So what is an hotspot first?  Full Article…

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Tcpdump how to – the linux network troubleshooter

ContentsCool IntroWorming UpProtocol SpecificationTcpdump RecipesUsing tcpdump Cool Intro Some people say that “wireshark” is good, and bla bla bla , & bla bla bla… Yes , wireshark is a great project but when it comes to firewalls, or to real work stuff nothing is like tcpdump. When you log in to a remote firewall, and  Full Article…

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Linux Network Configuration for home Users

ContentsThe Tools – net-tools VS iproute2Settings things UP {eth0|wlan0}Configuring eth0 with Automatic IP (DHCP)Configuring wlan0 with Automatic IP (DHCP)Configuring eth0 with Static IPConfiguring wlan0 with Static IPTroubleshooting The Tools – net-tools VS iproute2 There are 2 generic packages that do all-most the same thing’s. net-tools which include: ifconfig, nameif plipconfig rarp route slattach ipmaddr iptunnel  Full Article…

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dnsmasq round-robin how to

dnsmasq round-robin how to

Dnsmasq is currently compiled with round – robin algorithm (or a simple implementation of this algorithm). We make use of this capability for an very simple load balancing technique. What dnsmasq & round robin do? Basically , we configure 1 host and give for him N° IP addresses , dnsmasq changes the IP order of  Full Article…

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