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Howto upgrade IOS on a 3750 switch stack

 Network  4 Responses »
Jun 182008
 

If you want to upgrade IOS on a 3750 switch stack follow this procedure

There are some new IOS commands to automate upgrading of a stack, but I use the familiar manual method.

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 Posted by at 4:47 pm

How to prevent a package from being updated in Debian

 Package-Mgmt  2 Responses »
Jun 122008
 

If you want to update all the packages other than one in your debian server follow this procedure

There are three ways of holding back packages, with dpkg, aptitude or with dselect.

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 Posted by at 7:58 pm

Ddclient – Update IP addresses at dynamic DNS service

 Network  3 Responses »
May 282008
 

If you are using zoneedit.com or dyndns.org for your DNS service so that you can access your server using a URL, then you might have to update your DNS record at the service periodically whenever the IP address of your computer changes.Now here is simple solution for this ddclient.

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 Posted by at 9:22 pm

Fix for weak OpenSSL/OpenSSH keys in Debian

 Security  1 Response »
May 222008
 

A recent vulnerability was found in the OpenSSL package as provided by Debian and Debian-based Linux distributions, such as Ubuntu, that broke the effectiveness of the OpenSSL PRNG (Predictable Random Number Generator). This vulnerability caused OpenSSL to generate weak keys for anything relying on OpenSSL, including SSL certificates, OpenSSH keys, and OpenVPN keys.

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 Posted by at 12:28 pm

How to add a Disclaimer To Outgoing Emails in Postfix

 General, Security  7 Responses »
May 152008
 

We have already dicussed how to install and configure postfix now we will learn about How to add a Disclaimer To Outgoing Emails in Postfix using altermime.

alterMIME is a small program which is used to alter your mime-encoded mailpacks as typically received by Inflex, Xamime and AMaViS.

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 Posted by at 11:30 am
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