[求助]EMOS时不时会造成整个网络断网状态,是不是和clamav有关

[No001]

网络是这样的
电信宽带-->路由器-->交换机(有两个外网IP), 交换机下面一个接了防火墙(占用一个外网Ip),另一个就是Emos服务器(占用另一个外网Ip)

安装好emos1.5,没有做特别的配置,几乎都是默认的,只是更新了clamav的版本..
发现,运行一段时间后,就会造成网络瘫痪,防火墙下面的机器全都不能连接外网,重启EMOS就立刻网络恢复正常..


下面是系统日志:
(每次都是这样的情况就断网了,重启就恢复了)

Nov 21 09:14:41 mail freshclam[2462]: nonblock_connect: connect timing out (30 secs)
Nov 21 09:14:41 mail freshclam[2462]: Can't connect to port 80 of host db.local.clamav.net (IP: 211.239.150.206)
Nov 21 09:14:41 mail freshclam[2462]: Trying host db.local.clamav.net (218.44.253.75)...
Nov 21 09:14:42 mail freshclam[2462]: Downloading daily-13963.cdiff [100%]
Nov 21 09:14:43 mail freshclam[2462]: Downloading daily-13964.cdiff [100%]
Nov 21 09:14:48 mail freshclam[2462]: Downloading daily-13965.cdiff [100%]
Nov 21 09:14:49 mail freshclam[2462]: Downloading daily-13966.cdiff [100%]
Nov 21 09:14:50 mail freshclam[2462]: Downloading daily-13967.cdiff [100%]
Nov 21 09:14:50 mail freshclam[2462]: Downloading daily-13968.cdiff [100%]
Nov 21 09:14:51 mail freshclam[2462]: Downloading daily-13969.cdiff [100%]
Nov 21 09:14:55 mail freshclam[2462]: Downloading daily-13970.cdiff [100%]
Nov 21 09:14:55 mail freshclam[2462]: Downloading daily-13971.cdiff [100%]
Nov 21 09:14:56 mail freshclam[2462]: daily.cld updated (version: 13971, sigs: 30780, f-level: 60, builder: guitar)
Nov 21 09:14:56 mail freshclam[2462]: bytecode.cld is up to date (version: 153, sigs: 39, f-level: 60, builder: edwin)
Nov 21 09:14:57 mail freshclam[2462]: Database updated (1075206 signatures) from db.local.clamav.net (IP: 218.44.253.75)
Nov 21 09:14:57 mail freshclam[2462]: Clamd successfully notified about the update.
Nov 21 09:14:57 mail freshclam[2462]: --------------------------------------
Nov 21 09:14:57 mail clamd[2097]: Reading databases from /var/clamav
Nov 21 09:15:00 mail clamd[2097]: Database correctly reloaded (1073946 signatures)
Nov 21 09:15:54 mail clamd[2097]: /var/spool/vscan/tmp/amavis-20111121T091554-02496/parts/p004: Worm.NetSky-14 FOUND
Nov 21 09:25:15 mail clamd[2097]: SelfCheck: Database status OK.
Nov 21 09:36:52 mail clamd[2097]: SelfCheck: Database status OK.
Nov 21 09:48:51 mail clamd[2097]: SelfCheck: Database status OK.
Nov 21 09:49:03 mail yum: Erased: phpldapadmin
Nov 21 09:49:06 mail yum: Erased: phpmyadmin
Nov 21 09:59:00 mail clamd[2097]: SelfCheck: Database status OK.
Nov 21 10:06:59 mail clamd[2097]: /var/spool/vscan/tmp/amavis-20111121T095516-03274/parts/p004: Worm.Mydoom.I FOUND
Nov 21 10:14:29 mail clamd[2097]: SelfCheck: Database status OK.
Nov 21 10:25:06 mail clamd[2097]: SelfCheck: Database status OK.
Nov 21 10:41:42 mail clamd[2097]: SelfCheck: Database status OK.
Nov 21 10:53:33 mail clamd[2097]: SelfCheck: Database status OK.
下面是手动重启的系统
Nov 21 10:57:17 mail shutdown[3946]: shutting down for system reboot