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2514 utilizing dhcp ACL question

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labgrl76

IS-IT--Management
Dec 2, 2005
40
US
Hi all,
Well I've been able to get things going with my incoming connection but am experiencing issues when attempting to apply ACLs. Since I'm not running a dhcp server at home, I am basically using the 2514 to hand out addresses on my internal network (int e1). My question is since DHCP is being utilized, what basic ACL could I apply to make sure I've got some type of security to keep out the bad folk. :)
Thanks for any help in advance.

hostname 2514
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$2IKU$EGG/PBCXnzFDUi4OGjrgq.
enable password xxxx
!
no aaa new-model
ip subnet-zero
no ip source-route
ip cef
no ip domain lookup
no ip dhcp conflict logging
ip dhcp excluded-address 10.0.100.1 10.0.100.99
!
ip dhcp pool internal
network 10.0.100.0 255.255.255.0
default-router 10.0.100.1
dns-server xx.xx.64.146 xx.xx.75.194
netbios-name-server 10.0.100.2 10.0.100.3
lease 5
!
no ip bootp server
!
!
!
interface Ethernet0
description DMZ
ip address dhcp
ip nat outside
no cdp enable
!
interface Ethernet1
description INTERNAL
ip address 10.0.100.1 255.255.255.0
ip nat inside
no cdp enable
!
interface Serial0
no ip address
shutdown
no fair-queue
no cdp enable
!
interface Serial1
no ip address
shutdown
no fair-queue
!
ip nat inside source list 1 interface Ethernet0 overload
no ip http server
ip classless
!
!
access-list 1 permit 10.0.100.0 0.0.0.255
!
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
password xxxxxx
login
!
!
end
 
Might add:

line vty 0 4
password xxxxxx
login
access-class 12 in

access-list 12 permit 10.0.100.0 0.0.0.255

Should someone discover your external IP address this will block telnet to your router from the internet and keep it local only.

Also pretty limited with that router. Do not believe it has FW or IPS features available for security but should be sufficient for home use so long as the PC's have a good firewall and AV on them.
 
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