Friday, March 14, 2014

Cisco ASA – Permitting traffic between two interfaces with the same security level

Cisco ASA – Permitting traffic between two interfaces with the same security level

I had to make some network modifications to an ASA to activate another interface to accommodate some storage devices on a separate subnet for management purposes.  The below diagram shows the subnet’s in question.  I needed to configure the two interfaces to allow all interesting traffic to pass bi-directionally between each other.  Here are the commands I used to this rolling.
image
Even though the SERVER and STORAGE interfaces are configured with the same security level of 100 the default behavior of an ASA is to block communication between them.  We can enable communication between these two interfaces with the same security level with the following command:
ASA-CLI (config) # same –security-traffic permit inter-interface
Here is where many people get stuck.  After this command is added many people become baffled that they still cannot ping and pass traffic through.  This is because a “static or dynamic” translation rule is still required.  I added the following two commands to allow all IP traffic to pass bi-directionally.
ASA-CLI (config) # static (server,storage) 192.168.0.0 192.168.0.0 netmask 255.255.255.0
ASA-CLI (config) # static (storage,server) 192.168.2.0 192.168.2.0 netmask 255.255.255.0
At this point you should be good to go.
-Justin Vashisht (3cVguy)

Thursday, March 13, 2014

Outlook 2007: Remove or Disable RSS Feed Support

The integration between Outlook 2007 and Internet Explorer’s RSS system will slow down Outlook 2007. If you do not want to use Outlook 2007 for your feed reader or aggregator, here is how to remove this feature from Outlook.

Sadly, there is no command, option, or registry hack to hide the RSS icon or section in Outlook. We can, however, pretty much disable it.
If you do not want to use Outlook 2007′s RSS Feed Reader feature, you should remove it. It slows down Outlook. This also shows you how to remove the RSS feeds from the Outlook sidebar.
The main reason Outlook is made slower by RSS feeds is that Outlook will need time to sync with IE7′s feeds. By disabling this sync, you will improve Outlook’s performance.
Disable Outlook’s RSS Sync:
    1. Open Outlook 2007
    2. Click the Tools menu
    3. Click Options
    4. Select the Other tab
    5. Click the Advanced Options button
    6. Uncheck Sync RSS feeds to the Common Feed List
    7. Click OK X 2
Woo-hoo. That will speed up Outlook. If you want to remove the RSS subscriptions from Outlook, you may wish to do this following.
Mass Remove Feed Subscriptions from Outlook:
    1. Click Tools menu and then Options again.
    2. Select the poorly named Mail Setup tab
    3. Click the Data Files button
    4. Click the RSS Feeds tab
    5. Click the first feed and scroll down to the bottom of the feed list
    6. Hold the SHIFT key and click the last feed. All feeds should now be selected.
    7. Click the Remove button
    8. Confirm you want them all deleted.
Now we’ll need to delete the old feed content as well…
    9. Expand the RSS Feed folder under Personal Folders
    10. Select each feed and press Delete. You’ll have to confirm the delete.
    11. Repeat ad nauseum until all are gone.
     
    ---------------------------------------------------------------------------------------

Unsubscribe from an RSS Feed

At any time you can stop receiving, or unsubscribe from, a Really Simple Syndication (RSS) Feed. You can either cancel the feed and remove all items from that feed in Microsoft Office Outlook 2007, or cancel the feed and keep items downloaded from the feed.
 Note   If you want to keep the RSS Feed, but delete the downloaded items, open the folder for the RSS Feed, select the items to be deleted and then press DELETE.

Cancel an RSS Feed and remove all content from the feed

Delete the folder associated with the RSS Feed. Doing so will delete all of your downloaded items in the folder and cancel the RSS Feed.
  1. In Mail, in the Navigation Pane, expand the RSS Feeds folder.
Expanding the RSS Feeds folder
  1. Select the RSS Feed that you want to delete.
  2. Press DELETE.
  3. When prompted to confirm the deletion, click Yes.

Cancel an RSS Feed and keep all content from the feed

  1. On the Tools menu, click Account Settings.
  2. Click the RSS Feeds tab.
  3. Under Feed Name, click the feed you want cancel, and then click Remove.
 Note   To cancel multiple RSS Feeds, press and hold CTRL as you click RSS Feed names. This allows you to select multiple RSS Feeds.
Previously downloaded items from the feed are not deleted.

     
     

Thursday, March 6, 2014

Different UPS Definition Offline, Line-Interactive , Online

Different UPS Definition

 
Offline UPS
The UPS which has transformer time, BUT NO automatic voltage regulation (AVR) function. Its output will be square wave
Line-interactive UPS
The UPS which has transformer time, AND automatic voltage regulation (AVR) function is built-in. Its output can be either square wave or sine wave.
Online UPS
The UPS which has NO transformer time, AND automatic voltage regulation (AVR) function is built-in. It only produces sine wave output.
Different Type of UPS Comparison

Series Name Type Output Wave Transfer Time AVR PCB Communication Rated Power
Soho Econ offline Square >6 ms - Single Side - 500VA
Braver Line-interactive Square 2-6 ms Yes Single Side RS232 400VA, 600VA, 800VA
Braver Pro Line-interactive Square 2-6 ms Yes Single Side RS232 1KVA, 1.4KVA, 2KVA
Centrio Online Sine 0 ms Yes Single Side RS232, SNMP, RJ45, DB9 1KVA, 2KVA, 3KVA
Centrio DSP Online Sine 0 ms Yes Double Side RS232, SNMP, RJ45, DB9 6KVA, 10KVA, 15KVA, 20KVA
Sigma Online Sine 0 ms Yes Double Side RS232, SNMP, RJ45, DB9 4KVA, 6KVA
Vector 15KSL Online Sine 0 ms Yes Double Side RS232, SNMP, RJ45, DB9 15KVA
Vector 30KSL Online Sine 0 ms Yes Double Side RS232, SNMP, RJ45, DB9 30KVA
Vector Online Sine 0 ms Yes Double Side RS232, SNMP, RJ45, DB9 15KVA, 30KVA, 45KVA, 60KVA 75KVA, 90KVA, 105KVA, 120KVA
centrio 3c3 Online Sine 0 ms Yes Double Side RS232, SNMP, RJ45, DB9 20-80KVA