四個字 堅持到底

一般人常有習慣針對網頁目錄做備份，為了方便，於是先將它tar起來或者是尾巴加些日期關鍵字， 但是仍暴露於網頁路徑下，而造成備份檔有可能被下載或者是php原始碼可以直接瀏覽。 利用find指令找出這些檔案，切換到網頁路徑下執行 # find . -name "*.tar*" -or -name "*.gz.*" -or -name "*.php*" -or -name "*.bak*" 參考來源:

MASTER_SITE_BACKUP?=    \
        ftp://ftp.cs.pu.edu.tw/BSD/FreeBSD/distfiles/${DIST_SUBDIR}/\
        ftp://ftp2.tw.freebsd.org/pub/FreeBSD/ports/distfiles/${DIST_SUBDIR}/\
        ftp://ftp.nctu.edu.tw/pub/FreeBSD/distfiles/${DIST_SUBDIR}MASTER_SITE_OVERRIDE?=  ${MASTER_SITE_BACKUP}
WITHOUT_X11=yes

http://www.internetworkpro.org/wiki/IEEE_802.1q

硬碟:seagate 36G(SCSI,10000 rpm) 測試工具:blogbench

UFS:root@bsd:/usr/ports/benchmarks/blogbench# blogbench -d /test_dir/Frequency = 10 secs
Scratch dir = [/test_dir/]
Spawning 3 writers...
Spawning 1 rewriters...
Spawning 5 commenters...
Spawning 100 readers...
Benchmarking for 30 iterations.
The test will run during 5 minutes.

# yppasswd user
New Password:
Re-enter new Password:
Permission denied
You might also find something like this in the debug log: Jul 23 08:45:06 nismaster yppasswdd[162]: [ID 467562 auth.error] yppasswdd: user someuser: does not existSolution
You match the following conditions:

JPGraph doc & manual
http://doc.async.com.br/jpgraph/html
JPGraph Tutorial
http://www.binnendijk.net/jpgraph/index.php?page=3d_pie_1
http://www.pafis.shh.fi/reference/manuals/jpgraph/docs/

# pfctl -f /etc/pf.conf
No ALTQ support in kernel
ALTQ related functions disabled
pfctl: DIOCSETSTATUSIF
*表示interface填錯了,檢查看看

1.在/etc/pf.conf加入底下規則
table <SSHbruteforce> persist
table <FTPbruteforce> persist
block quick from <SSHbruteforce>
block quick from <FTPbruteforce>
pass quick inet proto tcp from any to any port 22 keep state (max-src-conn 5, max-src-conn-rate 3/20,overload <SSHbruteforce> flush global)
pass quick inet proto tcp from any to any port ftp keep state (max-src-conn 5, max-src-conn-rate 10/40,overload <FTPbruteforce> flush global)

2.再寫個script去紀錄每天的狀況
#!/bin/sh
log_file="/var/log/bad_guy.log"
date >> $log_file

echo " FTP:" >> $log_file
/sbin/pfctl -t SSHbruteforce -T show >> $log_fileecho " SSH:" >> $log_file
/sbin/pfctl -t FTPbruteforce -T show >> $log_file

3.阻擋一日後,即清除IP紀錄,先裝套件/usr/ports/security/expiretable
# /usr/local/sbin/expiretable -v -d -t 24h SSHbruteforce
# /usr/local/sbin/expiretable -v -d -t 24h FTPbruteforce
並把設定加入rc.local

常常寄信到外部ISP都會寄不出去,而有的又可以
可能對方主機判斷DNS沒有MX紀錄,而認為是垃圾信
postfix在main.cf內加上
relayhost = [ms25.hinet.net]
請有MX的郵件主機幫忙relay,前提是要對方接受relay

想用php做一個查詢ip位置,找到這個api可用
http://www.nott.org/blog/php-whois-script.html