How to use Nmap for Port Scanning in Linux

No comments
Here are a several ways to do port scanning and know which port/services are currently opened from remote host.Determining opened ports from remote hosts enables somebody to check which service and known applications are currently running from a remote host. Considering that you are not currently managing a particular remote host, this gives confirmation if a specific application service is properly...
Continue reading How to use Nmap for Port Scanning in Linux

EtherChannel Between Catalyst 3550/3560/3750 Series Switches and Catalyst Switches Running Cisco IOS System Software Configuration Example

No comments
Contents IntroductionPrerequisitesRequirementsComponents UsedConventionsBackground TheoryImportant NotesConfigureNetwork DiagramConfigurationsVerifyCatalyst 3550Catalyst 6500/6000TroubleshootErr-Disable State“speed nonegotiate” Command Does not Appear in the Running ConfigurationRelated Information Introduction This document provides a sample configuration...
Continue reading EtherChannel Between Catalyst 3550/3560/3750 Series Switches and Catalyst Switches Running Cisco IOS System Software Configuration Example
,

How to convert / migrate image based vm (guest / dom-U) to LVM based vm (virtual machine)-(Guest / dom-U) using xen.

2 comments
Hi all, In this article we will learn how to install virtual machine on sparse file (image file) and how to migrate / move it to LVM based storage / disk. It is recommended to use LVM based partition to install virtual machines for productions environment, as you may experience performance issues if you use images (sparse files) to install virtual machine. How to install virtual machine on image...
Continue reading How to convert / migrate image based vm (guest / dom-U) to LVM based vm (virtual machine)-(Guest / dom-U) using xen.
, ,

Inbound Rate Limiting on Cisco Catalyst Switches

No comments
If you need to limit the inbound bandwidth of a switch port on a Cisco Catalyst, the key is in the QoS configuration. Rather than going into an depth discussion of QoS and how it works, let’s skip that (check out Cisco’s QoS site for that level of detail) and jump into the configuration details. This particular configuration...
Continue reading Inbound Rate Limiting on Cisco Catalyst Switches
, ,

How would you limit the bandwidth on a switch port?

No comments
Edit: this configuration doesn’t seem to be that simple, because it’s not working very well on my 3560 now. Edit #2: It turns out everything works as stated, except for the minor fact that the command slows your interface down. Go into interface configuration mode, on the port you are making changes on. switch(config-if)#srr-queue bandwidth ? limit Configure bandwidth-limit for this interface...
Continue reading How would you limit the bandwidth on a switch port?

Cisco Router Configuration Commands.(Basic)

No comments
Set a console password to cisco Router(config)#line con 0Router(config-line)#loginRouter(config-line)#password cisco Set a telnet password Router(config)#line vty 0 4Router(config-line)#loginRouter(config-line)#password ciscoStop console timing out Router(config)#line con 0Router(config-line)#exec-timeout 0 0Set the enable password to cisco Router(config)#enable password cisco Set the enable secret...
Continue reading Cisco Router Configuration Commands.(Basic)

How To Disable Windows Genuine Advantage Notification in 3 Simple Steps

No comments
-- Following three simple steps now you can get rid of the pesky and sometimes buggy Windows Genuine Advantage (WGA) notifications:Step 1. Reboot Windows in safe mode (hold the f8 key while booting and you will get the option to boot in safe mode) and then:Step 2. Open Registry Editor (regedit.exe) and search for wgalogon folder and delete it. You should backup up the registry beforehand, in...
Continue reading How To Disable Windows Genuine Advantage Notification in 3 Simple Steps

Pin CPU core(s) to specific Xen domU (guest)

2 comments
v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0;...
Continue reading Pin CPU core(s) to specific Xen domU (guest)

Asterisk + ss7

1 comment
From last few days I am trying to set up Asterisk + SS7 with Sangoma A102 card on my Ubuntu 8.04 machine. This being my first time with Asterisk I was bit skeptical of things and was wondering if it will be smooth? Well, it wasn't really out-of-box, but it wasn't tough either. Here I will try to explain step-by-step of what I did, challenges I faced and solution for same.First of all keep in...
Continue reading Asterisk + ss7