i have a 4000 router that connectes to the internet with multilinked T1s. I want to put an access-list to prevent pings coming in ( .. deny icmp any any echo)
below is the relevant portion of the config:
interface Multilink1
ip address 4.24.163.102 255.255.255.252
load-interval 30
no cdp enable
ppp multilink
no ppp multilink fragmentation
multilink-group 1
!
interface Ethernet0
ip address 4.43.65.193 255.255.255.224
media-type 10BaseT
!
interface Serial0
no ip address
encapsulation ppp
load-interval 30
no fair-queue
down-when-looped
ppp multilink
multilink-group 1
!
interface Serial1
no ip address
encapsulation ppp
load-interval 30
no fair-queue
down-when-looped
ppp multilink
multilink-group 1
!
do i put the 'ip access-group 100 in' on each serial interface or on the multilink1 ?