Preserve timestamp with rsync May 29, 2012
Posted by networknuts in Indian Networking Institute, linux training in india, Red Hat, rhce, rhce training, RHCSS.Tags: alok srivastava, best linux training, linux backup, linux training, networknuts, redhat delhi, redhat linux, redhat training delhi, rhce exam, rhce training, rhcss exam, rhcss training, rsync, rsync command linux
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During your rhce training you must have learned about rsync command.
Did you know you can use -a option with rsync to preserve the timestamp of the files.
rsync -a option does the following:
-Recursive mode
-Preserves symbolic links
-Preserves permissions
-Preserves timestamp
-Preserves owner and group
rsync -a source target
Here is a simple snapshot from my machine.
rsync command preserving timestamp
Red Hat Examination Dates for June, 2012 May 28, 2012
Posted by networknuts in linux training in india, Red Hat, rhce, rhce training, RHCSS.Tags: networknuts, redhat exam dates, redhat examination dates, rhce exam, rhcss exam
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Red Hat Examination dates for June, 2012 at Network NUTS.
7th June – RHCSA/RHCE (retake)
8th June – RHCSA/RHCE (retake)
13th June – RHCSS (EX429)
14th June – RHCSA & RHCE
25th June- RHCSS (EX333)
29th June – RHCSA & RHCE
Confirm your seats with Dolly @ +91-9310024503
Secure FTP with TLS/SSL video May 28, 2012
Posted by networknuts in linux training in india, Red Hat, rhce, rhce training, RHCSS.Tags: alok srivastava, best linux training delhi, best linux training india, configuring vsftpd, ftp-ssl, ftps, linux training, networknuts, redhat delhi, redhat india, redhat linux training, redhat training india, rhce exam, rhce training, rhcss training, secure ftp
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Video by Network NUTS. Explain what are the drawbacks of simple FTP server. What are the benefits of configuring TLS/SSL with FTP. Configuring FTPS for securing authentication and data transfer over the normal ftp port 21. The videos used Red Hat Enterprise Linux 6 operating system for server and ubuntu machine as its client.
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Configure different clocks in Windows 7 May 27, 2012
Posted by networknuts in Indian Certified Networking Institute, MCSE BOOT CAMP TRAINING IN INDIA.Tags: networknuts, rhce training, windows 7, windows7 hacks
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Linux Distros not to use May 27, 2012
Posted by networknuts in linux training in india, Red Hat, rhce, rhce training, RHCSS.Tags: alok srivastava, linux distribu, linux distribution, linux distro, linux guide, linux not to use, networknuts, rhce training, rhce training delhi, rhcss training, rhcss training delhi
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Four Linux Distributions you should NOT USE.
1. Ubuntu Satanic Edition - http://ubuntusatanic.org/
2. Hannah Montana Linux - http://hannahmontana.sourceforge.net/index.html
3. Red Star OS - http://en.wikipedia.org/wiki/Red_Star_OS
4. Apartheid Linux
REASONS:
Ubuntu SE is more a novelty choice than a serious OS.
Hannah Montana - Its not going to be your OS of choice unless you watch way too much Disney channel. The distro itself is little more than a re-skinned Kubuntu.
Red Star OS is the Linux distribution of choice in North Korea. The project began in 2002 in a bid to replace the country’s dependence on Microsoft Windows, which was the primary OS of choice in the country up until then. The OS only comes in Korean and features a modified version of Mozilla Firefox called Naenara. This web browser connects to the country’s intranet known as Kwangmyong, a walled-garden approach which has no bridge to the standard Internet we know and love.
Apartheid Linux - Its the most offensive and disgusting as it is pointless. A racially-charged Linux distro for ignorant white people.
Network NUTS Videos Viewership May 25, 2012
Posted by networknuts in linux training in india, Red Hat, rhce, rhce training, RHCSS.Tags: free linux tutorials, linux training, linux videos, networknuts, rhce training india, rhce videos, rhcss training india
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Network NUTS YouTube channel viewership.
Wondering about 0% of Pakistan and Australia.
Network NUTS YouTube Videos Viewership
Use PAM to force users for new password May 23, 2012
Posted by networknuts in linux training in india, Red Hat, rhce, rhce training, RHCSS.Tags: alok srivastava, best linux training, force new password linux, force password use, linux hacks, linux tips, linux training, networknuts, redhat delhi, redhat india, redhat training, rhce exam, rhce training delhi, rhcss exam, rhcss training delhi, securing linux, using new password, using pam
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If you want to force users not to use the earlier used password again. You can take the help of PAM.
Just edit the file “/etc/pam.d/system-auth” and append the word “remember=10” in the password sufficient line. In this case I am telling the PAM to remember last 10 used passwords. So the users will be forced to use new passwords.
Here is the screenshot of the job executed on my machine.
Using PAM to force new passwords
I deserve “like”, “comments” and “share” for all the photo-editing job that I had done. 
You can also view this post on Network NUTS Facebook Page.
Video on Shortcut to Application Windows7 May 22, 2012
Posted by networknuts in Indian Certified Networking Institute, Indian Networking Institute, MCSE Training in India.Tags: networknuts
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Preventing against SYN attack May 22, 2012
Posted by networknuts in linux training in india, Red Hat, rhce, rhce training, RHCSS.Tags: alok srivastava, iptables, iptables configuration, linux hacks, linux tricks, networknuts, preventing syn attack, securing linux server, syn attack, sysctl.conf
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How to Discourage SYN Attack.
A SYN flood attack is a type of DoS attack.
A SYN packet notifies a server of a new connection. The server then reserve some memory to handle the incoming connection, sends back an acknowledgement, then waits for the client to complete the connection and start sending data. By spoofing large numbers of SYN requests, an attacker can fill up memory on the server, which will sit their waiting for more data that never will arrive. Once memory hasfilled up, the server will be unable to accept connections from legitimate clients. This effectively disables the server.
There are two simple methods you can use to discourage SYN attack.
#1. Configure /etc/sysctl.conf file and make sure “net.ipv4.tcp_syncookies=1″.
#2. Configure IPTables to reject packets if they are not SYN.
iptables -A INPUT -p tcp ! –syn -m state –state NEW -j DROP
Below is the screenshot from my machine.
Preventing against SYN attack
Network NUTS Videos Feedback May 21, 2012
Posted by networknuts in linux training in india, Red Hat, rhce, rhce training, RHCSS.Tags: alok srivastava, free hacks, linux training feedback, linux tutorials, linux videos, linux videos feedback, networknuts
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What a Comment Sir ji … with beer ….. posted on Network NUTS YouTube Channel.
What else is needed in summers.
Keep it up guys .. ur beer (oops comments) motivates us like anything.
Linux Videos Feedback
