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

any one explain about frame and MAC address,packet and IP address,and segment and port address

2 Answers   IBM,

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1 Answers  

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Difference between layer 2 and layer 3 devices ?

8 Answers   cDot, HCL,

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how many types of network connectivity's are their

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how to add a new host to DNS?

1 Answers  

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PPP is an extension of ? a. FRAME RELAY b. SDLC c. HDLC d. LAPB

1 Answers  

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5 Answers   Cisco, IBM,

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Name 3 problems with distance-vector protocol ? a. not feasible for small internetwork b. count-to-infinite c. routing loops d. inconsistent views of network

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Which protocol is working behind DHCP server? and what excatly DORA does?

3 Answers   HP,

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I am using solaris box, I need to delete a file from path /usr/tmp/ which r older than 24 hours?

0 Answers  

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How can run the computer without Hard disk?

32 Answers   BSRB,

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What does a secondary dhcp server do when the primary server is unable to respond ?

1 Answers  

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