How to Obtain Diagnostic Information for VMware ESXi 5.0 hosts using the vSphere Client

When you lodged a support request to VMware Technical Support, they routinely requests the diagnostic information from you. This diagnostic information contains product specific logs and configuration files from the host on which the product is run or from the host that may have issues and need further troubleshooting. This information is gathered using a specific script or tool within the product. Collecting diagnostic information is the same as collecting or gathering log files. This post will provides procedures for obtaining diagnostic information for ESXi 5.0.

VMware Official Knowledge Base

ESXi 5.0 host diagnostic information can be gathered using the vSphere Client connected to the ESXi host or to vCenter Server.

To gather diagnostic data using the VMware vSphere Client:

1.  Open the vSphere Client and connect to vCenter Server or directly to an ESXi 5.0 host.
2.  Log in using an account with administrative privileges or with the Global.Diagnostics permission.
3.  Select an ESXi host, cluster, or datacenter in the inventory.
4.  Click the File > Export > Export System Logs.
5.  If a group of ESXi hosts are available in the selected context, select the host or group of hosts from the Source list.
6.  Click Next.
7.  In the System Logs pane, select the components for which the diagnostic information must be obtained. To collect diagnostic information for all the components, click Select All.
8.  If required, select the Gather performance data option and specify a duration and interval.

VMware
9.  Click Next.
10.  In the Download Location pane, click Browse and select a location on the client’s disk where you want to to save the support bundle.
11.  Click Next.
12.  In the Ready to Complete pane, review the summary and click Finish. The Downloading System Logs Bundles dialog appears and provides progress status for the creation and downloading of the support bundle from each source. A Generate system logs bundles task is created.
13. When complete, upload the logs to the FTP site. For more information, see Uploading diagnostic information to VMware (1008525).

How to Restore and Recover Lost Bookmark on Mozilla Firefox

During normal usage of Firefox, you may discover that your Mozilla firefox has suddenly lost your bookmarks. In most cases, the bookmarks are not lost. Losing your bookmark just like you lost all your best friend contacts number. There are a number of reasons that can cause your bookmarks to disappear or suddenly lost from your Mozilla Firefox. The most common reasons is because Mozilla Firefox Web browser is not properly close before power down or restart the computer. Make sure you always close the browser before shutting down or restarting the computer. Another reasons are the bookmarks to disappear problem also be caused by a faulty or misconfigured plugin or extension, or even infected by malware.

This article i will help you restore and recover lost or missing bookmarks. Follow these quick steps.

1. Open your Mozilla Firefox.
2. Click on Bookmarks Menu.
firefox
3. Click Show All Bookmarks, Library window will appear.
4. On Library window, Click on “Import and Backup”.
firefox
5. Go to “Restore” then select on which date you want to restore.
6. When a message appears asking you to confirm the restore, click “Yes”.

How to Check MX Record Using nslookup Command on Windows

nslookup is a command-line tool for network administrator and system administrator that available in many computer operating systems such as linux and windows for querying the Domain Name System (DNS). nslookup can obtain domain name or IP address or for any other specific DNS record. In this post, i will share how nslookup command will useful to check MX record on windows command prompt.

Open windows command prompt and enter “nslookup” command :

C:\>nslookup
Default Server:  google-public-dns-a.google.com
Address:  8.8.8.8

> set type=mx

or
Alternatively, you can run “set q=mx” which will return you the same result with “set type=mx” command :

C:\>nslookup
Default Server:  google-public-dns-a.google.com
Address:  8.8.8.8

> set q=mx

After entering “set typ=mx” or “set q=mx”, you can proceed to enter the domain name that you want to check it’s mx records. In this example, i will share the mx records for gmail.com, yahoo.com and bloggermy.com.

Check MX records for gmail.com

> gmail.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
gmail.com       MX preference = 30, mail exchanger = alt3.gmail-smtp-in.l.google.com
gmail.com       MX preference = 5, mail exchanger = gmail-smtp-in.l.google.com
gmail.com       MX preference = 40, mail exchanger = alt4.gmail-smtp-in.l.google.com
gmail.com       MX preference = 20, mail exchanger = alt2.gmail-smtp-in.l.google.com
gmail.com       MX preference = 10, mail exchanger = alt1.gmail-smtp-in.l.google.com

Check MX records for yahoo.com

> yahoo.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
yahoo.com       MX preference = 1, mail exchanger = mta5.am0.yahoodns.net
yahoo.com       MX preference = 1, mail exchanger = mta6.am0.yahoodns.net
yahoo.com       MX preference = 1, mail exchanger = mta7.am0.yahoodns.net

Check MX records for bloggermy.com

> bloggermy.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

Non-authoritative answer:
bloggermy.com   MX preference = 5, mail exchanger = ALT1.ASPMX.L.GOOGLE.com
bloggermy.com   MX preference = 5, mail exchanger = ALT2.ASPMX.L.GOOGLE.com
bloggermy.com   MX preference = 10, mail exchanger = ASPMX2.GOOGLEMAIL.com
bloggermy.com   MX preference = 10, mail exchanger = ASPMX3.GOOGLEMAIL.com
bloggermy.com   MX preference = 0, mail exchanger = bloggermy.com
bloggermy.com   MX preference = 1, mail exchanger = ASPMX.L.GOOGLE.com

How to Fix “Error: Cannot retrieve repository metadata (repomd.xml) for repository: fedora. Please verify its path and try again” Error When using Local DVD-ROM/CD-ROM Yum Repository on Fedora 16

Question :

I am using Local DVD-ROM/CD-ROM yum Repository on Fedora 16. But when i perform any yum command to install or update or remove the package/module, i get the following error :

Error: Cannot retrieve repository metadata (repomd.xml) for repository: fedora. 
Please verify its path and try again

Answer :
To fix the following error, follow this steps :

1. Create repo.disabled inside /etc/yum.repos.d :

[root@fedora16 ~]# mkdir /etc/yum.repos.d/repo.disabled

By default of minimal installation of Fedora 16 server, there are 3 file in /etc/yum.repos.d as below :

[root@fedora16 ~]# ls /etc/yum.repos.d/
fedora.repo  fedora-updates.repo  fedora-updates-testing.repo  repo.disabled

Note : repos.disabled is the folder that you created in step (1).

2. Then moved all these 3 repo files into “repo.disabled” folder :

[root@fedora16 ~]# mv /etc/yum.repos.d/fedora.repo /etc/yum.repos.d/repo.disabled
[root@fedora16 ~]# mv /etc/yum.repos.d/fedora-updates.repo /etc/yum.repos.d/repo.disabled
[root@fedora16 ~]# mv /etc/yum.repos.d/fedora-updates-testing.repo /etc/yum.repos.d/repo.disabled

3. Create files fedora16.repo under /etc/yum.repos.d and enter the following lines :

[root@fedora16 ~]# vi /etc/yum.repos.d/fedora16.repo

Enter these lines in fedora16.repo :

[Fedora16-Repository]
name=DVD-Fedora16 Repository
baseurl=file:///mnt
enabled=1
gpgcheck=0

Check What file and folder inside /etc/yum.repos.d :

[root@fedora16 ~]# ls -l /etc/yum.repos.d/
total 8
-rw-r--r--. 1 root root   92 Mar 18 00:09 fedora16.repo
drwxr-xr-x. 2 root root 4096 Mar 18 01:27 repo.disabled

4. Run yum clean all to clear up your yum cache directory :

[root@fedora16 ~]# yum clean all
Cleaning repos: Fedora16-Repository
Cleaning up Everything

5. Steps completed. You can start using yum command as usual.

How to Extract ZIP files on Linux

ZIP archives are most commonly used in Windows/MS-DOS based environments. In Linux, you can use the “unzip” command to extract,list or test ZIP files. Simply run the following command to unzip the files :

[root@centos62 ~]# unzip adminer-3.3.3.zip
-bash: unzip: command not found

If zip command is not installed, proceed to install using this command :

[root@centos62 ~]# yum install unzip -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: centos.maulvi.net
 * epel: mirror01.idc.hinet.net
 * extras: centos.maulvi.net
 * rpmforge: fr2.rpmfind.net
 * updates: centos.maulvi.net
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package unzip.i686 0:6.0-1.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

====================================================================================================
 Package           Arch             Version                  Repository                        Size
====================================================================================================
Installing:
 unzip             i686             6.0-1.el6                CentOS6.2-Repository             143 k

Transaction Summary
====================================================================================================
Install       1 Package(s)

Total download size: 143 k
Installed size: 309 k
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : unzip-6.0-1.el6.i686                                                             1/1

Installed:
  unzip.i686 0:6.0-1.el6

Complete!
[root@centos62 ~]# unzip adminer-3.3.3.zip
Archive:  adminer-3.3.3.zip
   creating: adminer-3.3.3/
   creating: adminer-3.3.3/adminer/
  inflating: adminer-3.3.3/adminer/call.inc.php
  inflating: adminer-3.3.3/adminer/create.inc.php
  inflating: adminer-3.3.3/adminer/database.inc.php
  inflating: adminer-3.3.3/adminer/db.inc.php
  inflating: adminer-3.3.3/adminer/download.inc.php
   creating: adminer-3.3.3/adminer/drivers/
  inflating: adminer-3.3.3/adminer/drivers/mssql.inc.php
  inflating: adminer-3.3.3/adminer/drivers/mysql.inc.php
  inflating: adminer-3.3.3/adminer/drivers/oracle.inc.php
  inflating: adminer-3.3.3/adminer/drivers/pgsql.inc.php
  inflating: adminer-3.3.3/adminer/drivers/sqlite.inc.php
  inflating: adminer-3.3.3/adminer/dump.inc.php
  inflating: adminer-3.3.3/adminer/edit.inc.php
  inflating: adminer-3.3.3/adminer/event.inc.php
  inflating: adminer-3.3.3/adminer/file.inc.php
  inflating: adminer-3.3.3/adminer/foreign.inc.php
   creating: adminer-3.3.3/adminer/include/
  inflating: adminer-3.3.3/adminer/include/adminer.inc.php
  inflating: adminer-3.3.3/adminer/include/auth.inc.php
  inflating: adminer-3.3.3/adminer/include/bootstrap.inc.php
  inflating: adminer-3.3.3/adminer/include/connect.inc.php
  inflating: adminer-3.3.3/adminer/include/coverage.inc.php
  inflating: adminer-3.3.3/adminer/include/design.inc.php
  inflating: adminer-3.3.3/adminer/include/editing.inc.php
  inflating: adminer-3.3.3/adminer/include/functions.inc.php
  inflating: adminer-3.3.3/adminer/include/lang.inc.php
  inflating: adminer-3.3.3/adminer/include/pdo.inc.php
  inflating: adminer-3.3.3/adminer/include/version.inc.php
  inflating: adminer-3.3.3/adminer/include/xxtea.inc.php
  inflating: adminer-3.3.3/adminer/index.php
  inflating: adminer-3.3.3/adminer/indexes.inc.php
   creating: adminer-3.3.3/adminer/lang/
  inflating: adminer-3.3.3/adminer/lang/ar.inc.php
  inflating: adminer-3.3.3/adminer/lang/ca.inc.php
  inflating: adminer-3.3.3/adminer/lang/cs.inc.php
  inflating: adminer-3.3.3/adminer/lang/de.inc.php
  inflating: adminer-3.3.3/adminer/lang/en.inc.php
  inflating: adminer-3.3.3/adminer/lang/es.inc.php
  inflating: adminer-3.3.3/adminer/lang/et.inc.php
  inflating: adminer-3.3.3/adminer/lang/fr.inc.php
  inflating: adminer-3.3.3/adminer/lang/hu.inc.php
  inflating: adminer-3.3.3/adminer/lang/it.inc.php
  inflating: adminer-3.3.3/adminer/lang/ja.inc.php
  inflating: adminer-3.3.3/adminer/lang/lt.inc.php
  inflating: adminer-3.3.3/adminer/lang/nl.inc.php
  inflating: adminer-3.3.3/adminer/lang/pl.inc.php
  inflating: adminer-3.3.3/adminer/lang/pt.inc.php
  inflating: adminer-3.3.3/adminer/lang/ro.inc.php
  inflating: adminer-3.3.3/adminer/lang/ru.inc.php
  inflating: adminer-3.3.3/adminer/lang/sk.inc.php
  inflating: adminer-3.3.3/adminer/lang/sl.inc.php
  inflating: adminer-3.3.3/adminer/lang/ta.inc.php
  inflating: adminer-3.3.3/adminer/lang/tr.inc.php
  inflating: adminer-3.3.3/adminer/lang/zh-tw.inc.php
  inflating: adminer-3.3.3/adminer/lang/zh.inc.php
  inflating: adminer-3.3.3/adminer/plugin.php
  inflating: adminer-3.3.3/adminer/privileges.inc.php
  inflating: adminer-3.3.3/adminer/procedure.inc.php
  inflating: adminer-3.3.3/adminer/processlist.inc.php
  inflating: adminer-3.3.3/adminer/schema.inc.php
  inflating: adminer-3.3.3/adminer/scheme.inc.php
  inflating: adminer-3.3.3/adminer/script.inc.php
  inflating: adminer-3.3.3/adminer/select.inc.php
  inflating: adminer-3.3.3/adminer/sequence.inc.php
  inflating: adminer-3.3.3/adminer/sql.inc.php
   creating: adminer-3.3.3/adminer/static/
  inflating: adminer-3.3.3/adminer/static/arrow.gif
  inflating: adminer-3.3.3/adminer/static/cross.gif
  inflating: adminer-3.3.3/adminer/static/default.css
  inflating: adminer-3.3.3/adminer/static/down.gif
  inflating: adminer-3.3.3/adminer/static/editing.js
  inflating: adminer-3.3.3/adminer/static/favicon.ico
  inflating: adminer-3.3.3/adminer/static/functions.js
  inflating: adminer-3.3.3/adminer/static/loader.gif
  inflating: adminer-3.3.3/adminer/static/plus.gif
  inflating: adminer-3.3.3/adminer/static/up.gif
  inflating: adminer-3.3.3/adminer/table.inc.php
  inflating: adminer-3.3.3/adminer/trigger.inc.php
  inflating: adminer-3.3.3/adminer/type.inc.php
  inflating: adminer-3.3.3/adminer/user.inc.php
  inflating: adminer-3.3.3/adminer/variables.inc.php
  inflating: adminer-3.3.3/adminer/view.inc.php
  inflating: adminer-3.3.3/changes.txt
  inflating: adminer-3.3.3/compile.php
  inflating: adminer-3.3.3/coverage.php
   creating: adminer-3.3.3/designs/
   creating: adminer-3.3.3/designs/brade/
  inflating: adminer-3.3.3/designs/brade/adminer.css
   creating: adminer-3.3.3/designs/bueltge/
  inflating: adminer-3.3.3/designs/bueltge/adminer.css
   creating: adminer-3.3.3/designs/cvicebni-ubor/
  inflating: adminer-3.3.3/designs/cvicebni-ubor/adminer.css
   creating: adminer-3.3.3/designs/haeckel/
  inflating: adminer-3.3.3/designs/haeckel/adminer.css
   creating: adminer-3.3.3/designs/hever/
  inflating: adminer-3.3.3/designs/hever/adminer.css
   creating: adminer-3.3.3/designs/jukin/
  inflating: adminer-3.3.3/designs/jukin/adminer.css
   creating: adminer-3.3.3/designs/kahi/
  inflating: adminer-3.3.3/designs/kahi/adminer.css
   creating: adminer-3.3.3/designs/konya/
  inflating: adminer-3.3.3/designs/konya/adminer.css
   creating: adminer-3.3.3/designs/paranoiq/
  inflating: adminer-3.3.3/designs/paranoiq/adminer.css
   creating: adminer-3.3.3/designs/pilot/
  inflating: adminer-3.3.3/designs/pilot/adminer.css
  inflating: adminer-3.3.3/designs/readme.txt
   creating: adminer-3.3.3/editor/
  inflating: adminer-3.3.3/editor/db.inc.php
  inflating: adminer-3.3.3/editor/example.php
   creating: adminer-3.3.3/editor/include/
  inflating: adminer-3.3.3/editor/include/adminer.inc.php
  inflating: adminer-3.3.3/editor/include/connect.inc.php
  inflating: adminer-3.3.3/editor/include/editing.inc.php
  inflating: adminer-3.3.3/editor/index.php
  inflating: adminer-3.3.3/editor/script.inc.php
   creating: adminer-3.3.3/editor/static/
  inflating: adminer-3.3.3/editor/static/editing.js
   creating: adminer-3.3.3/externals/
   creating: adminer-3.3.3/externals/jsmin-php/
  inflating: adminer-3.3.3/externals/jsmin-php/jsmin.php
   creating: adminer-3.3.3/externals/jush/
  inflating: adminer-3.3.3/externals/jush/jush.css
  inflating: adminer-3.3.3/externals/jush/jush.js
  inflating: adminer-3.3.3/lang.php
   creating: adminer-3.3.3/plugins/
  inflating: adminer-3.3.3/plugins/dump-xml.php
  inflating: adminer-3.3.3/plugins/dump-zip.php
  inflating: adminer-3.3.3/plugins/edit-calendar.php
  inflating: adminer-3.3.3/plugins/edit-foreign.php
  inflating: adminer-3.3.3/plugins/edit-textarea.php
  inflating: adminer-3.3.3/plugins/email-table.php
  inflating: adminer-3.3.3/plugins/enum-option.php
  inflating: adminer-3.3.3/plugins/file-upload.php
  inflating: adminer-3.3.3/plugins/foreign-system.php
  inflating: adminer-3.3.3/plugins/frames.php
  inflating: adminer-3.3.3/plugins/login-servers.php
  inflating: adminer-3.3.3/plugins/login-table.php
  inflating: adminer-3.3.3/plugins/password-sha1.php
  inflating: adminer-3.3.3/plugins/plugin.php
  inflating: adminer-3.3.3/plugins/readme.txt
  inflating: adminer-3.3.3/plugins/slugify.php
  inflating: adminer-3.3.3/plugins/sql-log.php
  inflating: adminer-3.3.3/plugins/tables-filter.php
  inflating: adminer-3.3.3/plugins/tinymce.php
  inflating: adminer-3.3.3/plugins/translation.php
  inflating: adminer-3.3.3/plugins/version-noverify.php
  inflating: adminer-3.3.3/plugins/wymeditor.php
  inflating: adminer-3.3.3/readme.txt
   creating: adminer-3.3.3/tests/
  inflating: adminer-3.3.3/tests/0-login.html
  inflating: adminer-3.3.3/tests/1-create-database.html
  inflating: adminer-3.3.3/tests/10-clone.html
  inflating: adminer-3.3.3/tests/11-reference.html
  inflating: adminer-3.3.3/tests/12-update.html
  inflating: adminer-3.3.3/tests/13-delete.html
  inflating: adminer-3.3.3/tests/14-truncate.html
  inflating: adminer-3.3.3/tests/15-privileges.html
  inflating: adminer-3.3.3/tests/16-processlist.html
  inflating: adminer-3.3.3/tests/17-export.html
  inflating: adminer-3.3.3/tests/18-events.html
  inflating: adminer-3.3.3/tests/19-procedures.html
  inflating: adminer-3.3.3/tests/2-create-table.html
  inflating: adminer-3.3.3/tests/20-partitioning.html
  inflating: adminer-3.3.3/tests/21-variables.html
  inflating: adminer-3.3.3/tests/22-history.html
  inflating: adminer-3.3.3/tests/23-editor.html
  inflating: adminer-3.3.3/tests/24-explain.html
  inflating: adminer-3.3.3/tests/3-create-index.html
  inflating: adminer-3.3.3/tests/4-create-table-2.html
  inflating: adminer-3.3.3/tests/5-foreign-key.html
  inflating: adminer-3.3.3/tests/6-alter-table.html
  inflating: adminer-3.3.3/tests/7-create-trigger.html
  inflating: adminer-3.3.3/tests/8-create-view.html
  inflating: adminer-3.3.3/tests/9-insert.html
  inflating: adminer-3.3.3/tests/iexplore.bat
  inflating: adminer-3.3.3/tests/logout.html
  inflating: adminer-3.3.3/tests/selenium.html
  inflating: adminer-3.3.3/todo.txt

How to Unblock and Reclassify a Website That Trend Micro Blocked ?

Symptoms :
I am running Trend Micro OfficeScan and while trying to access a website. Unfortunately one of my site has been blocked by Trend Micro and return the following error message :

URL Blocked

The URL that you are attempting to access is a potential security risk. Trend Micro OfficeScan has blocked this URL in keeping with network security policy.
URL: 	http://www.xxxxxxx.net/
Risk Level: 	High
Details: 	For more information about this URL or to report it to Trend Micro for reclassification,visit http://reclassify.wrs.trendmicro.com.

I have checked the site thoroughly and i cannot find any malware on it. This is very very frustrating? for me as i will lost a lot of visitors who used Trend Micro antivirus on their computers or notebook.

Solutions :

To verify your site safety, you may check at this site :
McAfee SiteAdvisor, top FREE safe search tool
How to Check and Verify The Site That You Want You Visit Using SiteAdvisor

Follow the steps below to request for a website reclassification:

Step 1 Go to the Site Safety Center.

Step 2 Type the website address that you want to verify, then click Check Now.

The website will display a message saying if the address you typed is safe or dangerous. It will also provide you with the address’ category.

Step 3 Click Give Feedback if you want to reclassify the website.

Step 4 Select the correct rating of the website under the Safety Rating section.

Step 5 Select the correct category of the website under the Content section.

Step 6 Fill up the fields in the Introduce yourself section.

Step 7 Click OK once you are done.

You will receive the message below once you have successfully submitted your request.

A confirmation message will be sent to the email address you specified.

Step 8 Click the link in the email to confirm the feedback.

Your request will now be processed.

Thanks for your confirmation.

Trend Micro will start processing your request immediately and we will send you the result once it is done.

Check the safety of a website or request reclassification of a site references:

Website classification list and definition
How to request for website reclassification
Need site unblocked/reclassified
Website Reclassification
Trend Micro Site Safety Center

How to Install telnet on CentOS

Question : When i try to perform the troubleshooting using telnet command, the following error appeared. How to fix this ?

[root@centos62 ~]# telnet localhost 25
-bash: telnet: command not found

Answer : Simply install telnet using this command :

[root@centos62 ~]# yum install telnet
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: centos.ipserverone.com
 * epel: ftp.cuhk.edu.hk
 * extras: centos.ipserverone.com
 * rpmforge: ftp-stud.fht-esslingen.de
 * updates: centos.ipserverone.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package telnet.i686 1:0.17-47.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==========================================================================================
 Package         Arch          Version                Repository                     Size
==========================================================================================
Installing:
 telnet          i686          1:0.17-47.el6          CentOS6.2-Repository           56 k

Transaction Summary
==========================================================================================
Install       1 Package(s)

Total download size: 56 k
Installed size: 102 k
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : 1:telnet-0.17-47.el6.i686                                              1/1

Installed:
  telnet.i686 1:0.17-47.el6

Complete!

How to Fix “content was blocked because it was not signed by a valid security certificate” on Internet Explorer

Symptom :Certificate error Web page is displayed when you try to visit an SSL Web site by using Internet Explorer 7, Internet Explorer 8 on Windows XP, Windows Vista and Windows 7 operating system.

content was blocked because it was not signed by a valid security certificate

Solution 1:
1. To clear the certificate error go to Tools –> Internet Options from the menu of Internet Explorer(IE).
2. Click on the Advanced tab and scroll down to the security section. Clear the boxes for: “Check for publisher’s certificate revocation” and “Check for server certificate revocation”.
3. Click Apply and Ok.
4. Restart Internet Explorer to see if the certificate error problem is fixed. If not, try the following “Solution 2“.

Solution 2:
1. Click Start,
a) Type regedit in the Start Search box, and then press ENTER (Windows Vista & Windows 7)
b) Type regedit, and then press ENTER(Windows XP)

2.Locate and then click the following registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl

3. On the Edit menu, point to New, and then click Key.

4. Type FEATURE_ERROR_PAGE_BYPASS_ZONE_CHECK_FOR_HTTPS_KB950067 to name the new registry subkey, and then press ENTER.

5. On the Edit menu, point to New, and then click DWORD Value.

6. Type iexplore.exe to name the new registry entry, and then press ENTER.

7. On the Edit menu, click Modify.

8. Type 1, and then click OK.

9. Exit Registry Editor and restart Internet Explorer to see if the certificate error problem is fixed. If not, try the following “Solution 3“.

Solution 3:

1. Click Start , type regedit in the Start Search box, and then press ENTER.

2. Locate and then click the following registry subkey:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl

3. On the Edit menu, point to New , and then click Key.

4. Type the following key name, and then press ENTER:
FEATURE_ERROR_PAGE_BYPASS_ZONE_CHECK_FOR_HTTPS_KB954312

5. On the Edit menu, point to New , and then click DWORD Value.

6. Type iexplore.exe, and then press ENTER.

7. On the Edit menu, click Modify.

8. Type 1, and then click OK.

9. Exit Registry Editor and restart Internet Explorer to see if the certificate error problem is fixed. If not, try the following “Solution 4“.

Solution 4:
Upgrade the Internet Explorer Version to latest.

How to install Red Hat Enterprise Linux 6 (RHEL) Server

In this post, i will share with you on how to install Red Hat Enterprise Linux 6 (RHEL) Server. Recommended partitions scheme for x86, AMD64, and Intel 64 systems are as follow:

  • A swap partition
  • A /boot partition
  • A / partition

1. Select Install or upgrade an existing system option on Grub Menu

2. Skip DVD media test (or select media test, if you want to test installation media before installation)

3. Click Next to continue.

4. Select storage devices

5. Select Re-Initialize all.

6. Insert server hostname.

7. Select Nearest City in your time zone.

8. Enter a password for root user.

9. Click “Use Anyway” to continue.

10. Kindly read every options carefully. You can select Use All Space if not sure. Select encrypting if needed and option to review and modify partition layout.

11. Select Default installation for basic RHEL installation and select customize later.

12. Just Let the installation finish.

13. Congratulation, Your RHEl 6 has been installed. Click reboot

14. Installation completed. Login to your RHEL server.

How to Fix nslookup, host, dig: -bash: command not found in Linux?

Symptoms:

When i try to verify the dns and run a few dns command utilities such as host, dig and nslookup, below error appeared:

    [root@mail ~]# host -t mx zimbra.local
    bash: host: command not found
    [root@mail ~]# dig -t mx zimbra.local
    bash: dig: command not found
    [root@mail ~]# nslookup -t mx zimbra.local
    bash: nslookup: command not found
    

Findings:
If you have above problems in your Linux server, probably you might be missing the package that contains bind utilities. Please note that the host, dig and nslookup are part of the bind utilities.

Solution:

Run this command to install the bind utilities.

    [root@mail ~]# yum install bind-utils
    Setting up Install Process
    Setting up repositories
    Reading repository metadata in from local files
    Parsing package install arguments
    Resolving Dependencies
    --> Populating transaction set with selected packages. Please wait.
    ---> Downloading header for bind-utils to pack into transaction set.
    bind-utils-9.3.6-4.P1.el5_4.2.i386.rpm                                      |  43 kB     00:00
    ---> Package bind-utils.i386 30:9.3.6-4.P1.el5_4.2 set to be updated
    --> Running transaction check
    
    Dependencies Resolved
    
    =============================================================================
     Package                 Arch       Version          Repository        Size
    =============================================================================
    Installing:
     bind-utils              i386       30:9.3.6-4.P1.el5_4.2  rhellocalrepo     170 k
    
    Transaction Summary
    =============================================================================
    Install      1 Package(s)
    Update       0 Package(s)
    Remove       0 Package(s)
    Total download size: 170 k
    Is this ok [y/N]: y
    Downloading Packages:
    Running Transaction Test
    warning: bind-utils-9.3.6-4.P1.el5_4.2: Header V3 DSA signature: NOKEY, key ID 37017186
    Finished Transaction Test
    Transaction Test Succeeded
    Running Transaction
      Installing: bind-utils                   ######################### [1/1]
    
    Installed: bind-utils.i386 30:9.3.6-4.P1.el5_4.2
    Complete!
    

How to Remove “Undefined” date in Blogspot Templates

When you upload a new blogspot template from third party designer to your blogspot and found that the date for your post was “undefined”. This is actually an error, then you have to correct it. This “Undefined” error will appeared in every post instead of the blog post date.

undefined error

The reason for this error is the blog timestamp does not match with the one required. To fix this error, you have to follow this simple steps:

1. Loging to your blogger dashboard
2. Go to Setting
3. Go to Formatting
4. Modify the Date Header Format, Archive Index Date Format and Timestamp Format as below.

5. Click Save button.

How to Remove the “This site may harm your computer” warning?

Symptoms:
When you do google search to certain website or blog, google puts the warning flag in its search results for pages which to notify the surfers. Google users were redirected to page that warned: “This site may harm your computer.” The purpose of the warning is to help protect web surfers who are using Google search results.

This site may harm your computer

Possible Reasons:

1. Your site was hacked and this is the most common reason. Someone had modified files in your site and maybe put the injected code.
2. One of your backlink or website’s link is reported as a bad link or maybe having the malicious code.

Findings:
When i opened my google webmaster tool, It shows “This site may be distributing malware.”
Problematic URLs shows that the websites has the suspected injected code.

Solutions and Actions:
1. Find and remove the suspected injected code in the website or blog.
2. After you have removed all harmful code from your site and addressed the underlying vulnerability that caused it to be compromised, you can request a review of your site from google webmaster tool.