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主題 - yufeng

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訊息如下:

bash-4.2# dmesg | grep 'scsi'
[   15.940203] scsi2 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0
[   17.535750] scsi 2:0:6:0: Scanner                    Scanner 600      1.91 PQ: 0 ANSI: 3 CCS
[   17.535905] scsi target2:0:6: Beginning Domain Validation
[   17.585875] (scsi2:A:6:0): refuses synchronous negotiation. Using asynchronous transfers
[   17.621355] scsi target2:0:6: Domain Validation skipping write tests
[   17.621447] scsi target2:0:6: Ending Domain Validation
[   17.622535] scsi: <fdomain> Detection failed (no card)

想請問:scsi: <fdomain> Detection failed (no card) 是什麼樣的錯誤?如何修正?
因為應該是這個錯誤造成 /dev 裡沒有掃描器的代號,以致 XSane 抓不到掃描器

3
系統安全討論版 / 後門程式碼
« 於: 2006-09-29 10:27 »
前兩天碰到一個後門程式,假冒技服中心發 Email,Email 裡面放一個超連結,一點就中獎囉。
把那個程式碼抓回來卻看無,看看有沒有人有興趣研究研究,有沒有解法?
後門程式碼:

http://cygnet.mp.sina.com.tw/bigbigworld.txt

請用 FireFox 開, 用 IE 開好像會中獎!!

4
如題, 預設檔案上下傳的Log是記錄在哪裡?

是不是要更改 sshd_config 裡的:

SyslogFacility AUTH
LogLevel INFO

才看的到? 那要改成什麼呢?  謝謝~~

5
Linux 討論版 / sendmail 的問題, 請指教~~
« 於: 2004-08-03 13:19 »
最近的 maillog 裡常有 yahoo 過來信件的 Error 如下:

Jul 18 02:34:40 xxxxxxxx sm-mta[11423]: i6HIQ5CU011423: collect: premature EOM:Connection reset by n47.grp.scd.yahoo.com

Jul 18 02:34:40 xxxxxxxx sm-mta[11423]: i6HIQ5CU011423: SYSERR(root): collect: I/O error on connection from n47.grp.scd.yahoo.com, from=<>

Jul 18 02:34:40 xxxxxxxx sm-mta[11423]: i6HIQ5CU011423: from=<>, size=0, class=0, nrcpts=1, proto=SMTP, daemon=MTA, relay=n47.grp.scd.yahoo.com [66.218.67.24]

請問一下各位先進, 有什麼可能的原因所造成? 謝謝~~~

6
Linux 討論版 / [問題]關於SPAM
« 於: 2004-03-17 10:24 »
看了很多關於 SPAM 的討論,
昨天又看了 OpenWebMail FAQ 裡的 MAIL FILTERING 章節,
有一個主題似乎一直著墨很少, 提出來大家討論看看,
OpenWebMail 的 FAQ 原文如下:

Q: What are "messages with faked smtp"?
A: In short, they are messages coming from mail servers that fake their
   name from other machines.

   Where is a message coming from?

   A message sent from machine A to machine B may have 2 cases:
   a. A ---> M1 ---> M2 ---> B (M1, M2 are mail servers)
      In this case, openwebmail use M1 as the from server.
      Since most of the time, A is windows machine using outlook.
   b  A -------------------> B
      In this case, openwebmail use A as the from server.

   How do we know if a from server fakes his name?

   Each host may have 3 names in the mail header:
   $byas - name used by this server when saying hello to incoming connection
   $relay - name used by this server when relaying mail through other host
   $connectfrom - ip and name detected by other hosts resolved from DNS system when receiving connection from this server

   A from host is faking his name if
   a. $byas doesn't equal to $relay, and
   b. $connectfrom doesn't equal to $relay, and
   c. $connectfrom has different domain than the destitution server B, and
   d. $connectfrom is not private IP

以上的條件要在檢查 Header 的時候就把他檔掉, 該怎麼做呢?  謝謝~~~

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