Linux host trust mechanism Configuration

Linux host trust mechanism configuration 1: private key and public key for producing rsa and dsa: On vmoel5u4: [oracle @ vmoel5u4 ~] $ Ssh-keygen-t rsaGenerating public/private rsa key pair. enter file in which to save the key (/home/oracle /. ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in/home/oracle /. ssh/id_rsa.Your public key has been saved in/home/oracle /. ssh/id_rsa.pub.The key fingerprint is: 06: 82: c4: a3: d0: b9: d8: 02: cf: dd: eb: 0e: 5e: db: 22: b1 oracle @ vm Oel5u4.oracle.com [oracle @ vmoel5u4 ~] $ Ssh-keygen-t dsaGenerating public/private dsa key pair. enter file in which to save the key (/home/oracle /. ssh/id_dsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in/home/oracle /. ssh/id_dsa.Your public key has been saved in/home/oracle /. ssh/id_dsa.pub.The key fingerprint is: 7f: b4: 8e: bb: 67: 18: 73: 9f: 14: cf: 12: 47: 0d: 28: 93: aa oracle @ vm Oel5u4.oracle.com on even: [oracle @ even ~] $ Ssh-keygen-t rsaGenerating public/private rsa key pair. enter file in which to save the key (/home/oracle /. ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in/home/oracle /. ssh/id_rsa.Your public key has been saved in/home/oracle /. ssh/id_rsa.pub.The key fingerprint is: ad: 69: 3e: bc: ad: 57: ee: 03: 29: 25: b1: e5: b5: 99: 1b: af oracle @ ev En.oracle.com [oracle @ even ~] $ Ssh-keygen-t dsaGenerating public/private dsa key pair. enter file in which to save the key (/home/oracle /. ssh/id_dsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in/home/oracle /. ssh/id_dsa.Your public key has been saved in/home/oracle /. ssh/id_dsa.pub.The key fingerprint is: 73: b7: 9c: ba: 83: 15: 67: 9e: a5: d9: af: 48: 69: 96: 1b: cb oracle @ ev En.oracle.com 2. Add the pub key to authorized_keys: On vmoel5u4: [oracle @ vmoel5u4 ~] $ Cd. ssh [oracle @ vmoel5u4. ssh] $ lltotal 20-rw ------- 1 oracle oinstall 668 Jun 11 id_dsa-rw-r -- r -- 1 oracle oinstall 616 Jun 11 id_dsa.pub-rw ------- 1 oracle oinstall 1675 Jun 11 id_rsa-rw-r -- r -- 1 oracle oinstall 408 Jun 11 id_rsa.pub-rw-r -- r -- 1 oracle oinstall 798 Jul 23 2012 known_hosts [oracle @ vmoel5u4. ssh] $ cat id_dsa.pub> authorized_keys [oracle @ vmoel5u4. ssh] $ lltota L 24-rw-r -- r -- 1 oracle oinstall 616 Jun 11 authorized_keys-rw ------- 1 oracle oinstall 668 Jun 11 id_dsa-rw-r -- r -- 1 oracle oinstall 616 Jun 11 id_dsa.pub-rw ------- 1 oracle oinstall 1675 Jun 11 id_rsa-rw-r -- r -- 1 oracle oinstall 408 Jun 11 id_rsa.pub-rw-r -- r -- 1 oracle oinstall 798 Jul 23 2012 known_hosts [oracle @ vmoel5u4. ssh] $ cat id_rsa.pub> authorized_keys [oracle @ Vmoel5u4. ssh] $ ssh even cat/home/oracle /. ssh/id_dsa.pub> authorized_keysoracle @ even's password: [oracle @ vmoel5u4. ssh] $ ssh even cat/home/oracle /. ssh/id_rsa.pub> authorized_keysoracle @ even's password: [oracle @ even. ssh] $ ssh vmoel5u4 cat/home/oracle /. ssh/authorized_keys> authorized_keys 3. Test: [oracle @ vmoel5u4 ~] $ Ssh evenLast login: Tue Jun 11 18:28:06 2013 from vmoel5u4.oracle.com [oracle @ even ~] $ [Oracle @ even ~] $ Ssh vmoel5u4Last login: Tue Jun 11 18:27:57 2013 from even.oracle.com [oracle @ vmoel5u4 ~] $ The test is successful. If you do not need to enter the password, you can switch between the two hosts through SSH !!!!!