三个Security Server Protocols的区别
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distributed client/server AAA system |
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authentication protocol |
UDP 1645(认证) 1646(accounting) |
TCP (49) |
AAA配置五大部分:
1.enable | aaa new-model |
2.security protocol server |
radius-server host ... tacacs-server host ... 相关配置,radius-server key ,timeout 等 |
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aaa authetication ppp/login listname/default .... aaa authorication network/exec default ... aaa accouting network default ... |
4.aaa list引用 |
line 0-16 /line vty 0 4 int serial 0 |
radius-server host {hostname | ip-address} [auth-port port-number] [acct-port port-number] [timeout seconds] [retransmit retries] [key string] [alias {hostname | ip address}] |
ip-add,key ,udp-port,timeout,retransmit,都是具体UNIX SERVER上的配置,一定要和UNIX SERVER的KEY匹配 auth-port/acct-port: 是udp port 缺省是 authentication port (1645) and accounting port (1646): |
radius-server key加密
radius-server key {0 string | 7 string | string}
0表示 不加密
7表示 加密
定义认证串的时候,不能直接引用radius server,必须group radius 或者group aaa-group-name
aaa authentication ppp dialins group radius local
aaa authentication login default group radius local
RADIUS Server Group Examples
aaa new-model aaa authentication ppp default group group1 aaa authentication login default group group2 ! |
aaa group server radius group1 ! aaa group server radius group2 ! |
radius-server host 1.1.1.1 auth-port 1645 acct-port 1646 radius-server host 2.2.2.2 auth-port 2000 acct-port 2001 radius-server host 3.3.3.3 auth-port 1645 acct-port 1646 aaa group server定义,同时也要有radius-server定义。二者不能混淆。 本例中radius-server 2.2.2.2为两个group server服务 |
Authentication define
aaa authentication login default enable |
用enable密码作为用户telnet login的密码 |
aaa authentication login default line ! line vty 0 4 |
line: 采用line下的password指令的密码 |
aaa authentication enable default group radius |
enable 密码在RADIUS上设 enable的串都是default的 (用户输入enable的时候,router发request包 到RADIUS server,username是 "$enab15$.") |
authentication 的Line 引用
Line vty 0 4 |
aaa new-model aaa authentication banner *input your name and pass* aaa authentication fail-message *Failed login. Try again.* aaa authentication login default group radius |
将显示如下 input your name and pass Username: Failed login. Try again |
aaa authentication password-prompt
改变输入password的prompt
aaa authorization exec default group radius if-authenticated