10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have a central unix server and more than 200 unix server to connect from central server .For this to take place i want to use ssh keygen between & among servers .Do anybody has an idea how to automate this process . The server has same user id and same password (0 Replies)
Discussion started by: gauravsinha
0 Replies
2. AIX
Hi ,
I am trying to create public key on my AIX server on other than home directory.However the command does not ask for
Enter file in which to save the key :
It is directly taking me to Enter the passphrase.
I don't want to save the key in home dir as that is the home dir for other userID... (6 Replies)
Discussion started by: saurau
6 Replies
3. Shell Programming and Scripting
sftp username@host <<EOF
lcd /home/dirA
cd /home/dirB
mput *.txt
exit
EOF
Hi,
i have done the keygen-ssh settings but rite now I log through putty I enter my credentials and then when i successfully log in, then I issue the command ssh server name then I again enter into the server but... (1 Reply)
Discussion started by: rahulsxn660
1 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I using ssh-keygen for passwordless authenciation firstly
and I am following these steps mentioned below...
1) Login to pngpcdb1 using your user/pass
2) type 'bash' (without quotes)
3) ssh-keygen #generates private and public key.
4) copy this private key to the location of your sftp... (1 Reply)
Discussion started by: karan2597
1 Replies
5. UNIX for Dummies Questions & Answers
Hi,
I was going thruough the password less authentication of keygen-ssh that will help us in generating keys...One thing that is not clear to me that if in nearby future we conncet to remote ftp server in that case now we need to only provide the user id itself that is password would not be... (1 Reply)
Discussion started by: rahul125
1 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I am new to unix, recently i was exploring password less remote connection to the ftp server and in that I was exploring the ssh-keygen utility, that it generates private & public keys that helps in transmitting files in encrypted format.Could you please explain me in detail about the... (1 Reply)
Discussion started by: rahul125
1 Replies
7. Shell Programming and Scripting
Hi,
I have two Unix servers A and B. I have a script in server A. I want to connect to server B from A using ssh only and without giving passwords everytime i connect. I went through other posts regarding this and I generated a public key in server A and copied that in server B. Now when I... (3 Replies)
Discussion started by: mick_000
3 Replies
8. UNIX for Advanced & Expert Users
Hey guys,
I was using ssh-keygen settings for a long time to login on remote machines without password.
2 days back it suddenly stops working, i tried by reset all ssh-keygen setting but it not works.
what could be the reason of this issue and how can i resolve this? (2 Replies)
Discussion started by: RohitKJ
2 Replies
9. UNIX for Advanced & Expert Users
I am unable to set password less entry from one server to another even after i have generated public key and have put in the authorized_keys of the target server. When i try to debug the ssh using ssh -v, it gives me
debug1: Authentications that can continue:... (14 Replies)
Discussion started by: brandedfundoo
14 Replies
10. Shell Programming and Scripting
Hello friends,
I wanna to make new script which work as i defined below
(1) it connect (using ssh) to remote server
(2) remote server having passphrase key with password
(3) Generate new passphrase on local machine with random 8 character password.
(4) It will atomatically uploaded to... (4 Replies)
Discussion started by: jagnikam
4 Replies
MODULI(5) BSD File Formats Manual MODULI(5)
NAME
moduli -- Diffie-Hellman moduli
DESCRIPTION
The /etc/ssh/moduli file contains prime numbers and generators for use by sshd(8) in the Diffie-Hellman Group Exchange key exchange method.
New moduli may be generated with ssh-keygen(1) using a two-step process. An initial candidate generation pass, using ssh-keygen -G, calcu-
lates numbers that are likely to be useful. A second primality testing pass, using ssh-keygen -T, provides a high degree of assurance that
the numbers are prime and are safe for use in Diffie-Hellman operations by sshd(8). This moduli format is used as the output from each pass.
The file consists of newline-separated records, one per modulus, containing seven space-separated fields. These fields are as follows:
timestamp The time that the modulus was last processed as YYYYMMDDHHMMSS.
type Decimal number specifying the internal structure of the prime modulus. Supported types are:
0 Unknown, not tested.
2 "Safe" prime; (p-1)/2 is also prime.
4 Sophie Germain; 2p+1 is also prime.
Moduli candidates initially produced by ssh-keygen(1) are Sophie Germain primes (type 4). Further primality testing with
ssh-keygen(1) produces safe prime moduli (type 2) that are ready for use in sshd(8). Other types are not used by OpenSSH.
tests Decimal number indicating the type of primality tests that the number has been subjected to represented as a bitmask of
the following values:
0x00 Not tested.
0x01 Composite number - not prime.
0x02 Sieve of Eratosthenes.
0x04 Probabilistic Miller-Rabin primality tests.
The ssh-keygen(1) moduli candidate generation uses the Sieve of Eratosthenes (flag 0x02). Subsequent ssh-keygen(1) pri-
mality tests are Miller-Rabin tests (flag 0x04).
trials Decimal number indicating the number of primality trials that have been performed on the modulus.
size Decimal number indicating the size of the prime in bits.
generator The recommended generator for use with this modulus (hexadecimal).
modulus The modulus itself in hexadecimal.
When performing Diffie-Hellman Group Exchange, sshd(8) first estimates the size of the modulus required to produce enough Diffie-Hellman out-
put to sufficiently key the selected symmetric cipher. sshd(8) then randomly selects a modulus from /etc/ssh/moduli that best meets the size
requirement.
SEE ALSO
ssh-keygen(1), sshd(8)
Diffie-Hellman Group Exchange for the Secure Shell (SSH) Transport Layer Protocol, RFC 4419, 2006.
BSD
July 19, 2012 BSD
