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主題 - viphone

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1
最近一個DHCP snooping的問題困擾了我很久,網路環境如下:
Windows server 2008上開啟DHCP server
兩個網路埠做LACP接到switchA上的Port 1&2
switchA的Port 23&24分別接到SwitchB Port 23 & switchC Port 23
B跟C的uplink port(23)設定為DHCP snooping trust port
switch A Port 1&2設定為trust port
這個地方(甲地)是經由Hinet VPN到乙地的Outlook Exchange server上存取郵件的
甲地有Internet access
所以上網不是通過VPN從乙地出去
問題是,當啟用DHCP snooping後
原本固定IP的client,多了一個輸入exchange server password的動作,但存取沒有問題
而DHCP client在snooping啟用後反而不能存取郵件(上網沒問題)
請問這個部份是什麼造成的影響?

2
Linux 討論版 / syslog on Centos 5.6 xen
« 於: 2011-11-04 13:14 »
最近架了syslog要接收遠端網路交換器的log
但是怎麼試都不行
而這個遠端是在Internet上
我有把他加入/etc/hosts.allow 並給他起了個名字
不管是ping IP或名字都有回應

在/etc/sysconfig/syslog 加入了 -r 的參數
/etc/syslog.conf  加入了 *.*    /var/log/switchlogs
但是就是收不到它


Nov  3 10:11:34 centos syslogd 1.4.1: restart (remote reception).
Nov  3 10:11:34 centos kernel: klogd 1.4.1, log source = /proc/kmsg started.
Nov  3 10:13:52 centos crontab[11110]: (root) BEGIN EDIT (root)
Nov  3 10:15:16 centos crontab[11110]: (root) REPLACE (root)
Nov  3 10:15:16 centos crontab[11110]: (root) END EDIT (root)
Nov  3 10:16:01 centos crond[3199]: (root) RELOAD (cron/root)
Nov  3 10:20:32 centos kernel: Kernel logging (proc) stopped.
Nov  3 10:20:32 centos kernel: Kernel log daemon terminating.
Nov  3 10:20:33 centos exiting on signal 15
Nov  3 10:20:33 centos syslogd 1.4.1: restart (remote reception).
Nov  3 10:20:33 centos kernel: klogd 1.4.1, log source = /proc/kmsg started.
Nov  3 10:23:02 centos kernel: device eth0 entered promiscuous mode
Nov  3 10:24:44 centos kernel: device eth0 left promiscuous mode
Nov  3 10:59:01 centos crond[11237]: (root) CMD (/usr/sbin/hourly/logswitch.sh sgi-2404logs)
Nov  3 10:59:01 centos sendmail[11238]: My unqualified host name (centos) unknown; sleeping for retry
Nov  3 10:59:02 centos dhclient: DHCPREQUEST on eth0 to 192.168.1.1 port 67 (xid=0x40f8a0ca)
Nov  3 10:59:02 centos dhclient: DHCPACK from 192.168.1.1 (xid=0x40f8a0ca)
Nov  3 10:59:02 centos dhclient: bound to 192.168.1.100 -- renewal in 33149 seconds.
Nov  3 11:00:01 centos sendmail[11238]: unable to qualify my own domain name (centos) -- using short name
Nov  3 11:00:01 centos sendmail[11238]: pA3301jA011238: from=root, size=380, class=0, nrcpts=1, msgid=<201111030300.pA3301jA011238@centos>, relay=root@localhost
Nov  3 11:00:01 centos sendmail[11272]: pA3301WA011272: from=<root@centos>, size=597, class=0, nrcpts=1, msgid=<201111030300.pA3301jA011238@centos>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]
Nov  3 11:00:01 centos sendmail[11238]: pA3301jA011238: to=root, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30380, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (pA3301WA011272 Message accepted for delivery)
Nov  3 11:00:01 centos sendmail[11273]: pA3301WA011272: to=<root@centos>, ctladdr=<root@centos> (0/0), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30781, dsn=2.0.0, stat=Sent
Nov  3 11:01:01 centos crond[11278]: (root) CMD (run-parts /etc/cron.hourly)
Nov  3 11:07:25 centos kernel: Kernel logging (proc) stopped.
Nov  3 11:07:25 centos kernel: Kernel log daemon terminating.
Nov  3 11:07:26 centos exiting on signal 15
Nov  3 11:07:26 centos syslogd 1.4.1: restart (remote reception).
Nov  3 11:07:26 centos kernel: klogd 1.4.1, log source = /proc/kmsg started.
Nov  3 11:11:03 centos crontab[11352]: (root) BEGIN EDIT (root)
Nov  3 11:11:11 centos crontab[11352]: (root) REPLACE (root)
Nov  3 11:11:11 centos crontab[11352]: (root) END EDIT (root)
Nov  3 11:12:01 centos crond[3199]: (root) RELOAD (cron/root)
Nov  3 11:12:32 centos crontab[11356]: (root) BEGIN EDIT (root)
Nov  3 11:12:36 centos crontab[11356]: (root) END EDIT (root)
Nov  3 12:01:01 centos crond[11453]: (root) CMD (run-parts /etc/cron.hourly)
Nov  3 12:02:10 centos sshd[10926]: pam_unix(sshd:session): session closed for user root
Nov  3 13:01:01 centos crond[11580]: (root) CMD (run-parts /etc/cron.hourly)
Nov  3 13:06:11 centos sshd[11602]: Accepted password for root from 192.168.1.109 port 4024 ssh2
Nov  3 13:06:11 centos sshd[11602]: pam_unix(sshd:session): session opened for user root by (uid=0)
Nov  3 13:06:52 centos sshd[11602]: pam_unix(sshd:session): session closed for user root
Nov  3 14:01:01 centos crond[11740]: (root) CMD (run-parts /etc/cron.hourly)
Nov  3 15:01:01 centos crond[11868]: (root) CMD (run-parts /etc/cron.hourly)
Nov  3 16:01:01 centos crond[11993]: (root) CMD (run-parts /etc/cron.hourly)
Nov  3 17:01:01 centos crond[12118]: (root) CMD (run-parts /etc/cron.hourly)
Nov  3 17:06:58 centos sshd[12141]: Accepted password for root from 192.168.1.109 port 4367 ssh2
Nov  3 17:06:59 centos sshd[12141]: pam_unix(sshd:session): session opened for user root by (uid=0)
Nov  3 17:08:11 centos shutdown[12178]: shutting down for system reboot


網路上我看了好幾個前輩的文章才做設定的
請問還有什麼遺漏嗎?
或者是本來就不能收Internet上設備傳來的log?

3
database 討論版 / MySQL
« 於: 2011-08-10 23:40 »
請教各位先進
MySQL在使用上除了可供網頁軟體使用外(phpBB3, WordPress之類)
使用上是否跟MS SQL一樣?

我都是撿住戶捐出的書來看 但多是MS SQL的教學書

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