請問如何用防火牆限制telnet的登入ip? - BBS

※ 引述《[email protected] (悸動)》之銘言：
: ※ 引述《[email protected] (PP )》之銘言：
: > /sbin/ipfw add pass tcp from IP to me 23
: > /sbin/ipfw add deny all from any to any
: 翻一下任何一本講 TCP connection 連線過程的書，要知道 TCP connection
: 怎麼建立的，還有，要瞭解 TCP 是雙向傳輸...。
: # allow local interface
: ${fwcmd} add allow ip from any to any via lo0
: ${fwcmd} add deny ip from 127.0.0.0/8 to any
: # pass outgoing packet
: ${fwcmd} add allow ip from any to any out
: # pass established
: ${fwcmd} add allow tcp from any to any established
: # pass 140.113.27.50 to me (SYN)
: ${fwcmd} add allow tcp from 140.113.27.50 to me 23 setup
: # deny telnet
: ${fwcmd} add deny tcp from any to me 23


謝謝各位大大指教，

改成
/sbin/ipfw add pass tcp from 140.122.65.54 to me 23
/sbin/ipfw add deny tcp from any to me 23
就可以了。

其他方法我也會去試看看，感謝各位:)

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原來玩freebsd的都是好人:)

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