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version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
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boot-start-marker
boot-end-marker
!
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memory-size iomem 10
no aaa new-model
ip subnet-zero
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no ip domain lookup
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ip cef
!
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key chain Prob3
 key 1
  key-string bosco
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interface Ethernet0/0
 ip address 208.28.1.66 255.255.255.240
 half-duplex
 no shutdown
!
interface Serial0/0
 no ip address
 encapsulation frame-relay
 no fair-queue
 no shutdown
!
interface Serial0/0.1 point-to-point
 bandwidth 128
 ip address 208.28.1.1 255.255.255.248
 ip bandwidth-percent eigrp 100 80
 ip summary-address eigrp 100 17.57.100.0 255.255.252.0 255
 frame-relay interface-dlci 103   
 no shutdown
!
interface Ethernet0/1
 ip address 17.57.100.1 255.255.255.0
 ip authentication mode eigrp 100 md5
 ip authentication key-chain eigrp 100 Prob3
 half-duplex
 no shutdown
!
interface Serial0/1
 no ip address
 shutdown
!
router eigrp 100
 network 17.57.100.1 0.0.0.0
 network 208.28.1.1 0.0.0.0
 distribute-list prefix Prob10 in Serial0/0.1
 no auto-summary
!
no ip http server
ip classless
!
!
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ip prefix-list Prob10 seq 5 deny 17.57.100.0/22
ip prefix-list Prob10 seq 10 permit 0.0.0.0/0 le 32
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line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
!
!
end