مشکل من این است که کاربران DialUp بعضی وقت ها که وصل می شوند یا بهتر بگم معمولا اینتر نت ندارند
توضیح این که من از NAT سیسکو استفاده میکنم
interface FastEthernet0/0
ip address 172.16.20.100 255.255.255.0 secondary
ip address 217.229.225.49 255.255.255.252
ip access-group 130 in
no ip mroute-cache
speed auto
half-duplex
no cdp enable
!
interface Serial0/0
ip unnumbered FastEthernet0/0
ip nat outside
no ip mroute-cache
no fair-queue
no cdp enable
interface Group-Async1
ip unnumbered FastEthernet0/0
ip nat inside
encapsulation ppp
ip policy route-map filter
keepalive 10
async default routing
async mode interactive
peer default ip address pool default
ppp authentication pap isputil
ppp authorization isputil
ppp accounting isputil
group-range 33 64
!
ip local pool default 172.16.20.1 172.16.20.33
ip nat pool nat_inside 217.229.225.49 217.229.225.50 netmask 255.255.255.252
ip nat inside source list 1 pool nat_inside overload
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0/0
no ip http server
ip pim bidir-enable
!
!
access-list 1 permit 172.16.20.0 0.0.0.33
access-list 15 permit 217.229.225.50
access-list 130 deny tcp any any eq 135
access-list 130 deny tcp any any eq 139
access-list 130 deny tcp any any eq 445
access-list 130 deny tcp any any eq 593
access-list 130 permit ip any any
access-list 131 permit icmp any any echo
access-list 131 permit icmp any any echo-reply
access-list 131 deny icmp any any
access-list 150 permit tcp any any
no cdp run