Blogging about Open Software Solutions

Guest operating systems that are supported on a Hyper-V virtual machine hostView products that this article applies to.Article ID:954958Last Review:June 26, 2008Revision:1.0On This PageFor more information about the Microsoft support policy on non-Microsoft virtualization hardware, click the following article number to view the article in the Microsoft Knowledge Base:897615 (/Feedback.aspx?kbNumber=897615/) Support policy for Microsoft software running in non-Microsoft hardware virtualization softwareBack to the topINTRODUCTIONThis article lists the server and client guest operating systems that are supported on a Hyper-V virtual ... Read more..

You cannot establish an IPsec connection between a Linux operating system and a Windows Vista operating system when you initiate the connection from the Linux operating systemView products that this article applies to.Article ID:950826Last Review:May 28, 2008Revision:1.1On This PageSYMPTOMSConsider the following scenario. You use Windows Vista Local Security Policy on a Windows Vista-based computer. Or, you use the new Windows Firewall with Advanced Security on a Windows Vista-based computer. You try to initiate an Internet Protocol Security (IPsec) connection from ... Read more..

You cannot establish an IPsec connection between a Linux operating system and a Windows Vista operating system when you initiate the connection from the Linux operating systemView products that this article applies to.Article ID:950826Last Review:May 28, 2008Revision:1.0On This PageSYMPTOMSConsider the following scenario. You use Windows Vista Local Security Policy on a Windows Vista-based computer. Or, you use the new Windows Firewall with Advanced Security on a Windows Vista-based computer. You try to initiate an Internet Protocol Security (IPsec) connection from ... Read more..

1. Open a terminal window. 2. Enter the following command route -n 3. The address marked with the UG Flag , last line in the output is your default Gateway Read more..

This is how to view the details of the certificate signing request We will be using the file mycert.csr openssl req -noout -text -in mycert.csr Read more..

Make a  6 random bits of base64-encoded data. The result will be an eight character string  (crypt based) password: $ openssl rand -base64 6 RqwsGq8h $ This is how to generate a 16 character password $ openssl rand -base64 12 IFgOfL/LJixAf/ad $ Read more..

Here is how you can hide your linux OS Learn how to turn answers to icmp_echos off Log in as root : echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all To turn it on  type: echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all Read more..

Add the following value to named.conf to hide your version of bind :   version "[SECURED]" here is an example : options { directory "/var/named"; version "[SECURED]"; }; After this you need to restart the named server Read more..

LINUX : Display Current Config for all NIC's: ifconfig Display Current Config for eth0: ifconfig eth0 Assign IP: ifconfig eth0 192.168.1.2 Assign IP/Subnet: ifconfig eth0 192.168.1.2 netmask 255.255.255.0 Assign Default Gateway: route add default gw 192.168.1.1 Assign multiple IP's: ifconfig eth0:0 192.168.1.2 Assign second IP: ifconfig eth0:1 192.168.1.3 Disable network card: ifconfig eth0 down Enable network card: ifconfig eth0 up View current routing table: route "or" route -n View arp cache: arp "or" arp -n Ping: ping -c 3 192.168.1.1 Trace Route: traceroute www.ossmall.info Trace Path: tracepath www.ossmall.info DNS Test: host www.ossmall.info Advanced DNS Test: ... Read more..

A quick and usefull command for checking if a server is under ddos is: netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n That will list the IPs taking the most amount of connections to a server. It is important to remember that the ddos is becoming more sophistcated and they are using fewer connections with more attacking ips. If this is the case you will still get low number of ... Read more..

If you get this error : rpmdb: fatal region error detected; run recovery error: db4 error(-30982) from dbenv->open: DB_RUNRECOVERY: Fatal error, run database recovery error: cannot open Packages index It comes from a lock file and some old datbase files that have been left over. Just clear out the /var/lib/rpm directory, rebuild rpm and it should work fine. #cd /var/lib/rpm #rm -f /var/lib/rpm/__db* #rpm --rebuilddb Read more..

Get rarlinux from here : http://www.win-rar.com/downloadwinrar.html After unpacking the archive using "tar xvfz rarlinux-3.2.0.tar.gz" on your Linux machine, copy all the RAR files to /usr/sbin/. (except the text files). As a registered user, copy the rarreg.key to your home directory, for example /root/ or /home/user. Then start RAR in the command line mode. If you get the following error message: rar: error in loading shared libraries: libstdc++ cannot open shared object file ...please use the static version of RAR -> "rar_static". Read more..

REQUIREMENTS: mplayer lame 1. create a text file called wmamp3 in your ~/ 2. Open the file in your favorite editor and enter the following #!/bin/bash current_directory=$( pwd ) #remove spaces for i in *.wma; do mv "$i" `echo $i | tr ' ' '_'`; done #remove uppercase for i in *.[Ww][Mm][Aa]; do mv "$i" `echo $i | tr '[A-Z]' '[a-z]'`; done #Rip with Mplayer / encode with LAME for i in *.wma ; do mplayer -vo null -vc dummy -af resample=44100 -ao pcm -waveheader $i && lame -m s audiodump.wav ... Read more..