What Is Telnet?
The term "telnet" is a mashing together of "telephone" and "network." The term means to use telephone lines for the purpose of contacting and entering another network computer. For example, let's say I am on joe.net and there is a file I want on fred.com. I would use the telnet program to attach from my server to the other.
Please note: Just because I am discussing telnet does not mean you are guaranteed telnet capabilities with your account. You may not be able to connect you own system. It's up to the server people whether to allow you access or not.
Even if you can connect, you still may not be able to do all the things I talk about in the CGI tutorials. Again, it's up to your server people to give you the ability to do anything. Hopefully you will have full access, but if not, contact the people you pay each month and see if your account can be altered to include full access.
Where Will I Find Telnet?
If you are running Windows 95 or Windows 3.x, then you already have it on your system. Windows 95 users will find the program by clicking on Start, then Programs, then Accessories, and then choose Telnet. The icon will look like the one in the heading text. You could also jump right to it by clicking on Start, choose Run, and type in Telnet. The program will pop right up.
If you have Windows 3.x, then you'll still find it under the Accessories icon, but it will be named Terminal. Those of you using MAC systems will need to grab a telnet program. Telnet programs are plentiful and small. You'll have no trouble finding one. See http://www.shareware.com/ or Yahoo's Telnet Page. Telnet programs are usually very small. All they do is make the connection. The two connected servers do the rest.
Telnet/SSH session cannot be started from EEM applet.
The chances that you would be able to start SSH or Telnet session from an EEM applet were pretty slim, but the comment from melwong triggered my curiosity and I simply had to try it.
After all, as the action cli command uses a VTY line (like a regular user session), you might be able to use the pattern option of the action cli command to write something similar to an expect script. This was my best shot at getting it done:
event manager applet SSH event none action 0.9 cli command "enable" action 1.0 cli command "ssh -l ssUser R2" pattern "word:" action 1.1 cli command "ssPassword" pattern "#" action 2.0 cli command "clear ip route *" pattern "#" action 3.0 cli command "exit" pattern "#"My applet got past the SSH authentication
(debugging on R2 confirmed that the SSH session was started) but could not send data through the session itself (it hung on the clear ip route command).
What Is DOS Attack?
A Denial Of Service (DOS) is an attack through which a person can render a system unusable or significantly slow down the system for legitmate users by overloaidng the resources, so that no one can access it.if an attacker is unable to gain access to a machine, the attacker most probably will just crash the machine to acomplish a dos attack.
Type Of DOS Attack?
There are several general categories oof DOS attack.Popularly the attacks are mainle three types:-
1)BANDWIDTH ATTACK
2)PROTOCOL ATTACK
3)LOGIC ATTACK
The term "telnet" is a mashing together of "telephone" and "network." The term means to use telephone lines for the purpose of contacting and entering another network computer. For example, let's say I am on joe.net and there is a file I want on fred.com. I would use the telnet program to attach from my server to the other.
Please note: Just because I am discussing telnet does not mean you are guaranteed telnet capabilities with your account. You may not be able to connect you own system. It's up to the server people whether to allow you access or not.
Even if you can connect, you still may not be able to do all the things I talk about in the CGI tutorials. Again, it's up to your server people to give you the ability to do anything. Hopefully you will have full access, but if not, contact the people you pay each month and see if your account can be altered to include full access.
Where Will I Find Telnet?
If you are running Windows 95 or Windows 3.x, then you already have it on your system. Windows 95 users will find the program by clicking on Start, then Programs, then Accessories, and then choose Telnet. The icon will look like the one in the heading text. You could also jump right to it by clicking on Start, choose Run, and type in Telnet. The program will pop right up.
If you have Windows 3.x, then you'll still find it under the Accessories icon, but it will be named Terminal. Those of you using MAC systems will need to grab a telnet program. Telnet programs are plentiful and small. You'll have no trouble finding one. See http://www.shareware.com/ or Yahoo's Telnet Page. Telnet programs are usually very small. All they do is make the connection. The two connected servers do the rest.
Telnet/SSH session cannot be started from EEM applet.
The chances that you would be able to start SSH or Telnet session from an EEM applet were pretty slim, but the comment from melwong triggered my curiosity and I simply had to try it.
After all, as the action cli command uses a VTY line (like a regular user session), you might be able to use the pattern option of the action cli command to write something similar to an expect script. This was my best shot at getting it done:
event manager applet SSH event none action 0.9 cli command "enable" action 1.0 cli command "ssh -l ssUser R2" pattern "word:" action 1.1 cli command "ssPassword" pattern "#" action 2.0 cli command "clear ip route *" pattern "#" action 3.0 cli command "exit" pattern "#"My applet got past the SSH authentication
(debugging on R2 confirmed that the SSH session was started) but could not send data through the session itself (it hung on the clear ip route command).
What Is DOS Attack?
A Denial Of Service (DOS) is an attack through which a person can render a system unusable or significantly slow down the system for legitmate users by overloaidng the resources, so that no one can access it.if an attacker is unable to gain access to a machine, the attacker most probably will just crash the machine to acomplish a dos attack.
Type Of DOS Attack?
There are several general categories oof DOS attack.Popularly the attacks are mainle three types:-
1)BANDWIDTH ATTACK
2)PROTOCOL ATTACK
3)LOGIC ATTACK
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