ssh-agent&ssh-agent forward&SSH ProxCommand

1513 ワード

SSH Agent Forwarding原理http://www.w3hacker.com/?p=156は、SSH Agent Forwarding http://www.w3hacker.com/?p=158 SSH Agentを使用して、主に、パブリックスプーンのパスワードをキャッシュするために、ユーザがパスワードを入力する回数を減らす。
SSH ProxCommand
How it Work

A connection is established to the bastion host
+-------+            +--------------+
|  you  | ---ssh---> | bastion host |
+-------+            +--------------+

Bastion host runs netcat to establish a connction to the target server
+--------------+                +--------+
| bastion host | ----netcat---> | server |
+--------------+                +--------+

Your client then connects through the netcat tunnel and reaches the target server
+-----+                  +--------------+                +--------+
| you |                  | bastion host |                | server |
|     | ===ssh=over=netcat=tunnel======================> |        |
+-----+                  +--------------+                +--------+

How to use the ssh proxycommand

# clent:
$ vim ~/.ssh/config
... 
Host superchunk.example.org
	ProxyCommand  ssh [email protected] nc %h %p
...

# ssh connection result
$ ssh superchunk.example.org
Password: 
[email protected] password: 
Last login: Wed Jun 25 12:05:47 2008 from 10.0.0.221
[user@superchunk ~]$

全体のhashMapを巡回して、hashTable

hashCode()方法とequals()方法を書き換えます。