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Step-by-Step Configuration and Troubleshooting Best Practices for the NGFW, NGIPS and AMP Technologies A Visual Guide to the Cisco Firepower Threat Defense (FTD)
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ASA5510 firewall


        F0/0            F0/1


I could not able to ping from PC to R1 router interface F0/0 ( and I can able to ping F0/1 ( from my PC.

From firewall I can able to reach this network .Please let me know is there any additional command needs to be add in the firewall.

interface Ethernet0/0
nameif inside
security-level 100
ip address
interface Ethernet0/1
no nameif
no security-level
no ip address
interface Ethernet0/1.11
vlan 11
nameif DMZ1
security-level 0
ip address
interface Ethernet0/1.22
vlan 22
nameif DMZ2
security-level 0
ip address
interface Ethernet0/2
no nameif
no security-level
no ip address
interface Ethernet0/3
nameif ouside
security-level 0
ip address
interface Management0/0
nameif management
security-level 100
ip address
ftp mode passive
dns server-group DefaultDNS
pager lines 24
logging enable
logging timestamp
logging buffered informational
logging trap informational
logging asdm informational
logging host inside
mtu inside 1500
mtu DMZ1 1500
mtu DMZ2 1500
mtu ouside 1500
mtu management 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-633.bin
no asdm history enable
arp timeout 14400
global (ouside) 1 interface
nat (inside) 1
router eigrp 1
redistribute static
router ospf 1
network area 100
redistribute eigrp 1 subnets
route ouside 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
dynamic-access-policy-record DfltAccessPolicy
http server enable
http management
http inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
telnet timeout 5
ssh inside
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 migrated_dns_map_1
  message-length maximum 512
  message-length maximum client auto
policy-map global_policy
class inspection_default
  inspect dns migrated_dns_map_1
  inspect ftp
  inspect h323 h225
  inspect h323 ras
  inspect rsh
  inspect rtsp
  inspect esmtp
  inspect sqlnet
  inspect skinny
  inspect sunrpc
  inspect xdmcp
  inspect sip
  inspect netbios
  inspect tftp
  inspect icmp
service-policy global_policy global
prompt hostname context
: end

Cisco Employee

Re: ASA5510 firewall


On the firewall you seem to have a dynamic PAT from inside to outside. Hence, you will not be able to initiate connections from outside to inside unless you have an ACL to allow that traffic and a Static nat or Nat exemption.

I would suggest you to add the nat exemption for traffic from the PC to R1 and an access-list on the outside interface to allow traffioc from R1 to PC. The nat exemption would be of the form below:

access-list NONAT permit ip host host

nat (inside) 0 access-list NONAT

Ensure to allow the traffic from R1 to the PC using an access-list on the outside interface.

Let me know how it goes!!

Thanks and Regards,


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