Differences

This shows you the differences between two versions of the page.

--- linux:ssh [2017/01/19 11:59]
frank
+++ linux:ssh [2017/01/24 11:22] (current)
frank
@@ Line 1: / Line 1: @@
+==== SSH ====
+=== generate key ===
+<code>
+$ ssh-keygen -t rsa -b 4096
+</code>
+=== ssh agent ===
+If your private key is encrypted with a passphrase(when you generate it by ssh-keygen), the passphrase must be entered every time you attempt to connect to an SSH server using public-key authentication.
+SSH agent is a program which caches your decrypted private keys and provides them to SSH client programs on your behalf.
+<code>
+$ eval $(ssh-agent)
+$ echo $SSH_AUTH_SOCK
+$ ssh-add (add ~/.ssh/id_rsa by default)
+$ ssh -T user@remote.com
+</code>
+=== forwarding of authentication agent connection ===
+-A enables forwarding of the authentication agent connection.
+local -> server1 -> server2
+<code>
+$ eval $(ssh-agent)
+$ ssh-add
+$ ssh -A server1
+<host1> $ ssh server2
+</code>
 === ssh tunnel ssh -L ===
@@ Line 18: / Line 50: @@
-$ tar -cf - xen_el5_i386_para | gzip -c -9 | ssh root@ostest117 "gzip -dc | tar -xf - -C /OVS/rpool"
+  $ tar -cf - xen_el5_i386_para | gzip -c -9 | ssh root@ostest117 "gzip -dc | tar -xf - -C /OVS/rpool"
-$ tar czf - xen_el5_i386_para | ssh root@ostest117 "tar xzf - -C /OVS/rpool"
+  $ tar czf - xen_el5_i386_para | ssh root@ostest117 "tar xzf - -C /OVS/rpool"
+ ==== Reference ===
+  - https://wiki.archlinux.org/index.php/SSH_keys

Tech Wiki