Answer / senthil

To press ctrl+alt+del in two times

Answer / chetan

First log in on A as user a and generate a pair of authentication keys. Do not enter a passphrase:

a@A:~> ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/a/.ssh/id_rsa):
Created directory '/home/a/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/a/.ssh/id_rsa.
Your public key has been saved in /home/a/.ssh/id_rsa.pub.
The key fingerprint is:
3e:4f:05:79:3a:9f:96:7c:3b:ad:e9:58:37:bc:37:e4 a@A
Now use ssh to create a directory ~/.ssh as user b on B. (The directory may already exist, which is fine):

a@A:~> ssh b@B mkdir -p .ssh
b@B's password:
Finally append a's new public key to b@B:.ssh/authorized_keys and enter b's password one last time:

a@A:~> cat .ssh/id_rsa.pub | ssh b@B 'cat >> .ssh/authorized_keys'
b@B's password:
From now on you can log into B as b from A as a without password:

a@A:~> ssh b@B hostname
B
A note from one of our readers: Depending on your version of SSH you might also have to do the following changes:

Put the public key in .ssh/authorized_keys2
Change the permissions of .ssh to 700
Change the permissions of .ssh/authorized_keys2 to 640

Answer / pipli

tel the net

What is a MAC ? a. It is the network layer address of a NIC that can not be modified b. It is the network layer address of a NIC that can be modified c. It is the Data Link Layer address of a NIC that can not be modified d. It is the Data Link Layer address of a NIC that can be modified

1 Answers  

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Do you know about the job of the network layer under the osi reference model?

0 Answers  

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In the nsswitch.conf file what does the following entry mean ? NOTFOUND=return

1 Answers  

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What will the command "lpstat -lp fred" do ?

1 Answers  

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You just simply want to kill the sendail deamon. What's the easiest way ?

1 Answers  

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What is the difference between 802.2 and 802.3 frames ? a. 802.3 = 802.2 + LLC Header Info b. 802.2 = 802.3 + LLC Header Info c. 802.2 = 802.3 + Length field c. 802.3 = 802.2 + Length field

1 Answers  

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Which protocol is used typically within an AS ?

1 Answers  

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You have a team of 3 network administrators. They work independently. Often, they end up assigning same IP to multiple machine. Would using DHCP solve this problem ?

1 Answers  

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Networking?

2 Answers   CMS, XL Dynamics,

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What is network architecture?

0 Answers  

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Explain 802.1Q header?.

0 Answers   HCL,

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What does the file /etc/rpc contain ?

1 Answers  

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