BDCOM2621配置有何問題？

云中飄

首先說問題吧，打開路由器上網(wǎng)正常，但一分鐘過后，局域網(wǎng)正常，但無法上互聯(lián)網(wǎng)！重啟故障依舊，好不了一分鐘。詳細(xì)配置如下：
szpt#show run
Building configuration...

Current configuration:
!
!version 1.3.1N
service timestamps log date
service timestamps debug date
no service password-encryption
!
hostname szp
!
!
!
username szzx password 0 szp
!
aaa authentication login default local enable
enable password 0 szp
!
!
!
interface FastEthernet0/0
ip address 19.13.24.2 255.255.255.0
no ip directed-broadcast
ip nat outside
!
interface FastEthernet0/1
ip address 10.0.0.2 255.255.255.0
no ip directed-broadcast
ip access-group firewall in
ip nat inside
!
interface Serial0/2
no ip address
no ip directed-broadcast
!
interface Serial0/3
no ip address
no ip directed-broadcast
!
interface Async0/0
no ip address
no ip directed-broadcast
!
!
ip route default 19.13.24.1
!
!
!
!
!
!
gateway-cfg
shutdown
!
!
ip access-list standard NAT
permit 10.0.0.0 255.255.255.0
!
ip access-list extended firewall
deny   tcp any any eq 135
deny   tcp any any eq 139
deny   tcp any any eq 445
deny   tcp any any eq 3333
deny   tcp any any eq 593
deny   udp any any eq 135
deny   udp any any eq tftp
deny   udp any any eq 4444
deny   udp any any eq 137
deny   udp any any eq 138
permit ip any any
!
!
ivr-cfg
!
!
!
ip dhcpd pool sz1
network 10.0.0.0 255.255.255.0
range 10.0.0.3 10.0.0.100
domain-name sz
default-router 10.0.0.2
dns-server 202.103.44.5
lease 1 0 0
!
ip dhcpd enable
!
!
!
ip nat translation max-links all 200
ip nat inside source list NAT interface FastEthernet0/0
!
!
!
szpt#





還請高手們分析一二，是否網(wǎng)內(nèi)流量過大還是內(nèi)網(wǎng)中有病毒？跪謝！

ssffzz1

1、收集故障時的路由器CPU和MEMORY信息，還有接口流量信息。還有ARP表。
2、故障時內(nèi)網(wǎng)和路由器是否可以通訊，內(nèi)網(wǎng)PC的ARP表是否正確。