求助：服务器远程无法连接，PING不通。在服务器本机登陆后，远程连接自动恢复。

Vamos

日志如下：

在上午10点重启了系统，在15点37分发现服务器无法远程访问，通知服务器管理员在服务器本机登陆，登陆后没做任何设置，远程网络连接自动恢复。

请教各位，是什么原因。谢谢。系统为AS5

Mar 18 10:02:48 localhost smartd[2268]: smartd version 5.36 [i686-redhat-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Mar 18 10:02:48 localhost smartd[2268]: Home page is http://smartmontools.sourceforge.net/  
Mar 18 10:02:48 localhost smartd[2268]: Opened configuration file /etc/smartd.conf
Mar 18 10:02:48 localhost smartd[2268]: Configuration file /etc/smartd.conf parsed.
Mar 18 10:02:48 localhost smartd[2268]: Device: /dev/hda, opened
Mar 18 10:02:48 localhost smartd[2268]: Device: /dev/hda, found in smartd database.
Mar 18 10:02:48 localhost smartd[2268]: Device: /dev/hda, is SMART capable. Adding to "monitor" list.
Mar 18 10:02:48 localhost smartd[2268]: Monitoring 1 ATA and 0 SCSI devices
Mar 18 10:02:49 localhost smartd[2270]: smartd has fork()ed into background mode. New PID=2270.
Mar 18 10:02:49 localhost init: open(/dev/pts/0): No such file or directory
Mar 18 10:02:49 localhost last message repeated 3 times
Mar 18 10:02:50 localhost pcscd: winscard.c:219:SCardConnect() Reader E-Gate 0 0 Not Found
Mar 18 10:02:50 localhost last message repeated 3 times
Mar 18 10:02:50 localhost kernel: [drm] Initialized drm 1.0.1 20051102
Mar 18 10:02:50 localhost kernel: ACPI: PCI Interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 177
Mar 18 10:02:50 localhost kernel: [drm] Initialized i915 1.5.0 20060119 on minor 0
Mar 18 13:51:58 localhost restorecond: Will not restore a file with more than one hard link (/etc/resolv.conf) Invalid argument
Mar 18 15:37:35 localhost gdm[2378]: 无法认证用户
Mar 18 15:37:50 localhost gconfd (root-3647): 正在启动(版本 2.14.0)，pid 3647 用户“root”
Mar 18 15:37:51 localhost gconfd (root-3647): 地址“xml:readonly:/etc/gconf/gconf.xml.mandatory”解析为位于 0 的只读配置源
Mar 18 15:37:51 localhost gconfd (root-3647): 地址“xml:readwrite:/root/.gconf”解析为位于 1 的可写入配置源
Mar 18 15:37:51 localhost gconfd (root-3647): 地址“xml:readonly:/etc/gconf/gconf.xml.defaults”解析为位于 2 的只读配置源
Mar 18 15:37:57 localhost hcid[1850]: Default passkey agent (:1.5, /org/bluez/applet) registered
Mar 18 15:38:00 localhost pcscd: winscard.c:219:SCardConnect() Reader E-Gate 0 0 Not Found
Mar 18 15:38:00 localhost last message repeated 4 times
Mar 18 15:38:03 localhost gconfd (root-3647): 地址“xml:readwrite:/root/.gconf”解析为位于 0 的可写入配置源