Appendix: Collected rules Each truth that I discovered became a rule that served me afterwards in the discovery of others. René Descartes, Le Discours de la Méthode Several chapters contain rules or guidelines that summarize a discussion. The rules are collected here for easy reference. Bear in mind that each was presented in a context that explains its purpose and applicability. Style Use d...
SUMMARY OF rules This summary is designed to give a quick review of the points we covered in the book. Remember as you read the rules that they were presented in connection with one or more examples – go back and reread the pertinent section if a rule doesn't call them to mind. To paraphrase an observation in The Elements of Style, rules of programming style, like those of English, are sometime...
F280，我将主板上的IDPROM拨掉，然后将另外一台F280主板上的IDPROM拨掉插到此块主板上，加电启动自检，系统提示Illegal computer configuration后，就自动poweroff; 然后，我将其重新换成原IDPROM，加电启动自检，系统仍然提示Illegal computer configuration后，就自动poweroff; ？？
这是一个很简单的网络环境，一个ip地址，一个宿舍都使用这个ip通过一个路由器上网， 配置文件份几个部分： 1.先允许本地回路lo0自由进出，这是必须的，某些程序需要通过这种方式通信。 2.打开自己需要的端口和协议。 3.记录需要的信息，用来网络有异常时看看有没有什么不对的。 4.阻止其他一切网络通信。 ！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！ ！！！！不保证该规则好使！...
[code]ip="192.168.x.x" # ftpdata (20) ipfw add allow tcp from any to $ip 20 in ipfw add allow tcp from $ip 20 to any out # ftp (21) ipfw add allow tcp from any to $ip 21 in ipfw add allow tcp from $ip 21 to any out ipfw add allow tcp from any to $ip 1024-65535 in ipfw add allow tcp from $ip 1024-65535 to any out # ssh (22) ipfw add allow tcp from any to $ip 22 in ipfw add allow tcp from $ip 22 to ...
Quote: # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -p 50 -j ACCEPT -A RH-Firewall-1-INPUT -p 51 -j ACCE...
