Re: unable to ping from OUTSIDE to INSIDE in cisco ASA....NEED urgent help

kousikdutta · ‎07-01-2018

Hi,

I am not able to ping from outside to inside. For below diagram

R1(Inside)-------------ASA-----------------R2(outside)

192.168.12.0/24 10.10.12.0/24

ASA Config

ciscoasa# sh run
: Saved
:
ASA Version 8.4(2)
!
hostname ciscoasa
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface GigabitEthernet0
nameif inside
security-level 100
ip address 192.168.12.2 255.255.255.0
!
interface GigabitEthernet1
nameif outside
security-level 0
ip address 10.10.12.1 255.255.255.0
!
interface GigabitEthernet2
shutdown
no nameif
no security-level
no ip address
!
interface GigabitEthernet3
shutdown
no nameif
no security-level
no ip address
!
interface GigabitEthernet4
shutdown
no nameif
no security-level
no ip address
!
interface GigabitEthernet5
shutdown
no nameif
no security-level
no ip address
!
ftp mode passive
object network NAT_OUT_IN
subnet 0.0.0.0 0.0.0.0
access-list ALLOW_ICMP extended permit icmp any any echo-reply
pager lines 24
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
nat (inside,outside) source dynamic any interface
access-group ALLOW_ICMP in interface inside
access-group ALLOW_ICMP out interface inside
access-group ALLOW_ICMP in interface outside
route inside 0.0.0.0 0.0.0.0 192.168.12.1 1
route outside 2.2.2.2 255.255.255.255 10.10.12.2 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
user-identity default-domain LOCAL
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
telnet timeout 5
ssh timeout 5
console timeout 0
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect ip-options
inspect netbios
inspect rsh
inspect rtsp
inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
inspect icmp
!
service-policy global_policy global
prompt hostname context
call-home reporting anonymous prompt 2
call-home
profile CiscoTAC-1
no active
destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService
destination address email callhome@cisco.com
destination transport-method http
subscribe-to-alert-group diagnostic
subscribe-to-alert-group environment
subscribe-to-alert-group inventory periodic monthly
subscribe-to-alert-group configuration periodic monthly
subscribe-to-alert-group telemetry periodic daily
crashinfo save disable
Cryptochecksum:d41d8cd98f00b204e9800998ecf8427e

Note: Inside to outside is pinging.

Regards,

K

Georg Pauwen · ‎07-01-2018

Hello,

add:

access-list ALLOW_ICMP extended permit icmp any any echo

to your access list...

kousikdutta · ‎07-01-2018

Sorry its not pinging

Georg Pauwen · ‎07-01-2018

Hello,

I recreated your setup in GNS3, the only difference is that I switched the default routes:

route outside 0.0.0.0 0.0.0.0 192.168.12.1 1
route inside 2.2.2.2 255.255.255.255 10.10.12.1 1

kousikdutta · ‎07-01-2018

Hi,

Thanks for you very quick response. Please find below output.

ciscoasa(config-if)# packet-tracer input inside tcp 10.10.12.1 133 192.168.12.$

Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit Rule
Additional Information:
Forward Flow based lookup yields rule:
in id=0xbc2a1708, priority=1, domain=permit, deny=false
hits=5, user_data=0x0, cs_id=0x0, l3_type=0x8
src mac=0000.0000.0000, mask=0000.0000.0000
dst mac=0000.0000.0000, mask=0100.0000.0000
input_ifc=inside, output_ifc=any

Phase: 2
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 192.168.12.2 255.255.255.255 identity

Phase: 3
Type: ACCESS-LIST
Subtype:
Result: DROP
Config:
Implicit Rule
Additional Information:
Forward Flow based lookup yields rule:
in id=0xbc2a1d88, priority=0, domain=permit, deny=true
hits=0, user_data=0x9, cs_id=0x0, use_real_addr, flags=0x1000, protocol=0
src ip/id=0.0.0.0, mask=0.0.0.0, port=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, dscp=0x0
input_ifc=inside, output_ifc=any

Result:
input-interface: inside
input-status: up
input-line-status: up
output-interface: NP Identity Ifc
output-status: up
output-line-status: up
Action: drop
Drop-reason: (acl-drop) Flow is denied by configured rule

If you dont mind can you please share your asa config so that I can compare

kousikdutta · ‎07-01-2018

yes. thanks for your support. its pinging now

kousikdutta · ‎07-01-2018

sorry till ASA its pinging but not R1.. Please help

Georg Pauwen · ‎07-01-2018

Hello,

post the configs of the routers, the problem might be there...

kousikdutta · ‎07-01-2018

----R1---------

hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface GigabitEthernet1/0
ip address 192.168.12.1 255.255.255.0
negotiation auto
!
ip route 0.0.0.0 0.0.0.0 192.168.12.2
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
stopbits 1
line aux 0
line vty 0 4
!

!
webvpn cef
!

--------------R2-------------

Router#sh run
Building configuration...

Current configuration : 854 bytes
!
upgrade fpd auto
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
!
multilink bundle-name authenticated
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
interface FastEthernet0/0
no ip address
shutdown
duplex half
!
interface GigabitEthernet1/0
ip address 10.10.12.2 255.255.255.0
negotiation auto
!
ip route 1.1.1.1 255.255.255.255 10.10.12.1
ip route 192.168.12.0 255.255.255.0 10.10.12.1
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
stopbits 1
line aux 0
line vty 0 4
!

!
webvpn cef
!
end

kousikdutta · ‎07-01-2018

ciscoasa(config)# packet-tracer input outside tcp 10.10.12.2 123 192.168.12.1 $

Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit Rule
Additional Information:
Forward Flow based lookup yields rule:
in id=0xbc2c5240, priority=1, domain=permit, deny=false
hits=4366, user_data=0x0, cs_id=0x0, l3_type=0x8
src mac=0000.0000.0000, mask=0000.0000.0000
dst mac=0000.0000.0000, mask=0100.0000.0000
input_ifc=outside, output_ifc=any

Phase: 2
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 192.168.12.0 255.255.255.0 inside

Phase: 3
Type: ACCESS-LIST
Subtype:
Result: DROP
Config:
Implicit Rule
Additional Information:
Forward Flow based lookup yields rule:
in id=0xbc2c5ee8, priority=11, domain=permit, deny=true
hits=0, user_data=0x5, cs_id=0x0, flags=0x0, protocol=0
src ip/id=0.0.0.0, mask=0.0.0.0, port=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, dscp=0x0
input_ifc=outside, output_ifc=any

Result:
input-interface: outside
input-status: up
input-line-status: up
output-interface: inside
output-status: up
output-line-status: up
Action: drop
Drop-reason: (acl-drop) Flow is denied by configured rule

Georg Pauwen · ‎07-01-2018

Hello,

make sure your access list looks like this:

access-list ALLOW_ICMP extended permit icmp any any echo-reply

access-list ALLOW_ICMP extended permit icmp any any echo

Also post the config of the other router...

kousikdutta · ‎07-02-2018

Hi Pauwen,

Till yesterday it was not pinged. Just point came to my mind that is there any requirement to configure nat (outside,inside) as well.

Regards,

K

Georg Pauwen · ‎07-02-2018

Hello,

you don't need NAT, as a matter of fact, delete the line below from your config:

--> no nat (inside,outside) source dynamic any interface

kousikdutta · ‎07-02-2018

Hi,

Whenever I am configuring

ciscoasa(config)# sh run nat
nat (inside,outside) source dynamic any interface
nat (outside,inside) source dynamic any interface
!

Then its pinging. When removing outside to inside nat its not pinging

Georg Pauwen · ‎07-02-2018

Hello,

what are you trying to accomplish, what is the requirement ? Just for ICMP connectivity, you don't need NAT...