Spacebar (page down) Shift + Spacebar (page up) Command + D (bookmark current page) Function + F5 (reload current page) Command + T (open new tab) Command + W (close current tab or window) Control + Tab (navigate forward through browser tabs) Control + Shift + Tab (navigate backward through browser tabs) Command + K (go to search box) Command + L (go to address bar) Command + Enter (auto-complete URL within address bar) Command + = (increase screen text size) Command + – (decrease screen text size) Command + F (find text) Control + N (find next occurrence of text) These commands will work on Linux, Mac OSX and Windows versions of Firefox as well, simply use the Control key in place of the Command key where appropriate. Add Comment #Brute Force Attack and Countermeasures 01/03/2012
Brute Force Attack A brute force attack scenario consists of hackers exhaustively attempting to authenticate with the service that ensures that a correct password is "input" to grant access to a network terminal or computer s. The attacker tries to authenticate with the victim's computer or service with username lists and random passwords. A successful hack means that a specific victim computer or service of that network itself is compromised. No method can counteract such a hack, and all applications protected by the hacked terminal are at threat. Counterattack A brute force attack can be delayed if the algorithm data is large enough, i.e. cracking all combinations becomes virtually impossible without super-computers. In order to protect the security of a terminal computer, the computer should have a secure kernel and communication channel that allows storing a cryptographic key. Like an IPSec Policy or VNP Encryption via LAN or WiFi. * Require that passwords must be at least six characters long, may not contain a username or any part of a full name, and must contain characters from at least three of the following: * English uppercase letters (A, B, C,...Z) English lowercase letters (a, b, c,...z) Westernized Arabic numerals (0, 1, 2,...9) Non-alphanumeric “metacharacters” (@, #, !, &, and so on.) These are also the same characters used by the attacker to force the right password. This method will only increase the time that hackers would need to spend to crack the password. Other more complex methods are available to mitigate this attack. Neteco provides these and many other services here..! Here is a video that shows one of these attacks. *Google Gmail Email Send Rate Limit & Restrictions The following restrictions apply when sending emails from a Google Gmail account: Gmail email send limit - no more than 500 recipients per message for the Gmail web interface, or max 100 recipients if you are using an email client software. Gmail other SMTP limits - outgoing messages sent via Google Gmail can not exceed 10Mb per email (including attachments). GoogleMail Policy - http://www.google.com/mail/help/programpolicies.html GoogleMail SMTP restriction expiry method - the restriction is automatically removed within 24 hours after the limit was reached. *MSN Hotmail Email Send Rate Limit & Restrictions The following restrictions apply when sending emails from a Hotmail account: Hotmail email send limit - no more than 100 recipients per day. Hotmail other SMTP limits - outgoing messages sent via Hotmail can not exceed 10Mb per email (including attachments). MSN privacy policy - http://privacy.microsoft.com/en-us/fullnotice.mspx *Yahoo Mail - Email Send Rate Limits & Other Email Restrictions The following restrictions apply when sending emails from a Yahoo Mail account: Yahoo Mail email send limit - no more than 100 emails or recipients per hour. Yahoo Mail other SMTP limits - max 10Mb per message for the free Yahoo Mail Service, or 20Mb per message for Yahoo! Mail Plus. Yahoo! Anti-Spam Policy - http://docs.yahoo.com/info/guidelines/spam.html Yahoo Mail SMTP restriction expiry method - N/A. *Lycos Mail - Email Send Limits & Restrictions The following restrictions apply when sending emails from a Lycos Mail account: Lycos Mail email send limit - max 25 recipients per message and max 250 emails per day. Lycos Mail other SMTP limits - Lycos Mail does not have a limit to the attachment file size at this time. Lycos Email Policy - http://info.lycos.com/legal/mailterms.html *AOL Email Send (Rate) Limits The following restrictions apply when sending emails from an AOL connection: AOL email send limit - no more than 100 recipients per message or 500 recipients per connection. AOL other SMTP limits - max 16mb per message. AOL email-outbound policy - http://postmaster-us.info.aol.com AOL SMTP restriction expiry method - N/A #This is the First Post! 12/28/2011
Hi everybody, this is the first post...! Hope you had a Merry Christmas and we wish you a happy and productive 2012 ! Hope to see you around...! |
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