服务器系统,建设qmail服务器的病毒防护系统

建设qmail服务器的病毒防护系统 - 电脑安全 - 电脑教程网

建设qmail服务器的病毒防护系统

日期:2006-11-17   荐:
  本文介绍如何给公司的邮件服务器加个病毒扫描,综合考虑了几种方案后,认为qmail-scanner clamav(主要是因为免费)比较合适,这种方案的优点就是如果你的qmailqueue-patch在安装时就打好了,原系统基本不动。 所需软件(假定你有QMAIL系统,且能正常运行)

1、 maildrop-1.5.2.20030423.tar.gz 2、perl-Time-HiRes-1.38-3.i386.rpm 3、clamav-0.65.tar.gz 4、qmail-scanner-1.20.tgz 一 maildrop安装:

tar zxvf maildrop-1.5.2.20030423.tar.gz ./configure [options] make make install-strip make install-man 二 安装 perl-Time-HiRes-1.38-3.i386.rpm rpm -ivh perl-Time-HiRes-1.38-3.i386.rpm 三 安装clamav-0.65.tar.gz

grouadd clamav useradd –g clamav –s /bin/false clamav tar zxvf clamav-0.65.tar.gz cd clamav-0.65 ./configure make check make install 更新病毒库,freshclam 把freshclam加入crontab 定时更新病毒库, 修改/usr/local/etc/clamav.conf Example前加# 或删掉 执行clamscan 测试 执行clamd 然后执行clamdscan 四 安装qmail-scanner-1.20.tgz

groupadd qscand useradd –g qscand –s /bin/false qscand tar zxvf qmail-scanner-1.20.tgz cd qmail-scanner-1.20 ./configure --qmail-queue-binary /var /qmail/bin/qmail-queue --admin postmaster \ --domain abc.com.cn --notify sender,admin --local-domains abc.com.cn --lang en_GB\ --debug yes --unzip yes --scanners clamscan 检查有无错误 然后安装./configure --qmail-queue-binary /var /qmail/bin/qmail-queue --admin postmaster \ --domain abc.com.cn --notify sender,admin --local-domains abc.com.cn --lang en_GB\ --debug yes --unzip yes --scanners clamscan --install 看看是否在/var/qmail/bin/qmail-scanner-queue.pl是否存在 chown qscand:qscand /var/qmail/bin/qmail-scanner-queue.pl chmod 4755 /var/qmail/bin/qmail-scanner-queue.pl 然后用一个普通用户登陆,执行/var/qmail/bin/qmail-scanner-queue.pl -z 如果没有Can't do setuid出现,恭喜你, 如果有回到安装文件目录,有个contrib目录, make make install 附加步骤:chown qscand:qscand /var/qmail/bin/qmail-scanner-queue chmod 4755 /var/qmail/bin/qmail-scanner-queue chmod 0755 /var/qmail/bin/qmail-scanner-queue.pl 然后用一个普通用户登陆,执行/var/qmail/bin/qmail-scanner-queue -z /var/qmail/bin/qmail-scanner-queue –g 修改环境变量 1 在你的qmail启动脚本加入 QMAILQUEUE=/var/qmail/bin/qmail-scanner-queue.pl如果作了附加步骤用下面的 QMAILQUEUE=/var/qmail/bin/qmail-scanner-queue export QMAILQUEUE 2还有一种方法:请参考FAQ.php Instead set it under the tcpserver smtp rules file (you're using Qmail - so you already know what that is - right? :-). That way you can even setup Qmail-Scanner to only scan mail from particular SMTP client IP address ranges/etc. This is now the only officially supported mechanism. Set it something like this: #/etc/tcpserver/smtp.rules # # No Qmail-Scanner at all for mail from 127.0.0.1 127.:allow,RELAYCLIENT="",RBLSMTPD="", QMAILQUEUE="/var/qmail/bin/qmail-queue" # Use Qmail-Scanner without SpamAssassin on any mail from the local network # [it triggers SpamAssassin via the presence of the RELAYCLIENT var] 10.:allow,RELAYCLIENT="",RBLSMTPD="", QMAILQUEUE="/var/qmail/bin/qmail-scanner-queue.pl" # # Use Qmail-Scanner with SpamAssassin on any mail from the rest of the world :allow,QMAILQUEUE="/var/qmail/bin/qmail-scanner-queue.pl" Then run "maketcprules" or something like "tcprules /etc/tcp.smtp.cdb /etc/tcp.smtp.tmp < /etc/tcp.smtp" to rebuild the database 重起qmail 测试,这里有测试程序 /youdir/software/qmail-scanner-1.20 test_installation.sh 不知什么原因,我的clamscan 扫描不到病毒,经过测试,发现了原因,正确解决方法: 修改qmail-scanner-queue.pl中的 my $clamscan_options="-r --disable-summary --max-recursion=10 --max-space=1000000";为 my $clamscan_options="-r --mbox --disable-summary --max-recursion=10 --max-space=1000000"; 就可以OK了 主要的排错监测日志 /var/spool/qmailscan/quarantine.log /var/spool/qmailscan/qmail-queue.log /var/log/clamd.log /var/qmail/maillog

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