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New Member

cannot ping outside hostnames only (IPs work)



I have an ASA 5505 at home... I have connected it to my Router/ Wi-fi ap and configured it to get DHCP IP and routes..


all works except pinging netbios names on my inside network... 


For example, on my outside network (connected to my router) I have a NAS called diskstation. From my inside network I can ping but I cannot ping it using (Diskstation)


The odd this if that if I do ping -a it will reply:


Pinging DISKSTATION [] with 32 bytes of data and it replies...


Any Ideas?

Everyone's tags (1)

hi,did you configure DNS


did you configure DNS lookup?

dns domain-lookup inside
dns server-group DefaultDNS

New Member

Hi, If I ping from my inside



If I ping from my inside network:

C:\Users\user>ping -a

Pinging DISKSTATION [] with 32 bytes of data:
Reply from bytes=32 time=1ms TTL=64
Reply from bytes=32 time=1ms TTL=64
Reply from bytes=32 time=1ms TTL=64
Reply from bytes=32 time=1ms TTL=64


C:\Users\user>ping diskstation
Ping request could not find host diskstation. Please check the name and try agai


DNS seems correct to me:


 sh run
: Saved
ASA Version 9.1(5)
hostname ciscoasa
enable password 8Ry2YjIyt7RRXU24 encrypted
interface Ethernet0/0
 switchport access vlan 2
interface Ethernet0/1
interface Ethernet0/2
interface Ethernet0/3
interface Ethernet0/4
interface Ethernet0/5
interface Ethernet0/6
interface Ethernet0/7
interface Vlan1
 nameif inside
 security-level 100
 ip address
interface Vlan2
 nameif outside
 security-level 0
 ip address dhcp setroute
ftp mode passive
dns domain-lookup inside
dns server-group DefaultDNS
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
object network obj_any
object network Belkin
object-group protocol DM_INLINE_PROTOCOL_1
 protocol-object ip
 protocol-object udp
 protocol-object tcp
object-group protocol TCPUDP
 protocol-object udp
 protocol-object tcp
object-group service DM_INLINE_TCP_1 tcp
 port-object eq www
 port-object eq https
object-group service DM_INLINE_SERVICE_1
 service-object tcp destination eq netbios-ssn
 service-object udp destination eq netbios-dgm
 service-object udp destination eq netbios-ns
access-list inside_access_in extended permit object-group DM_INLINE_PROTOCOL_1 any any
access-list inside_access_in extended permit object-group TCPUDP any
access-list inside_access_in extended permit icmp interface outside
access-list inside_access_in extended permit icmp interface outside
access-list global_access extended permit tcp any interface outside object-group DM_INLINE_TCP_1
access-list global_access extended permit icmp any any
access-list global_access extended permit object-group DM_INLINE_SERVICE_1 any any
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-716.bin
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
object network obj_any
 nat (inside,outside) dynamic interface dns
nat (inside,outside) after-auto source dynamic any interface dns
access-group inside_access_in in interface inside
access-group global_access global
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
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
http server enable
http inside
http inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
crypto ipsec security-association pmtu-aging infinite
crypto ca trustpool policy
telnet timeout 5
no ssh stricthostkeycheck
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0

dhcp-client client-id interface outside
dhcpd auto_config outside
dhcpd address inside
dhcpd auto_config outside interface inside
dhcpd enable inside
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
username cisco password 3USUcOPFUiMCO4Jk encrypted privilege 15
class-map inspection_default
 match default-inspection-traffic
policy-map type inspect dns preset_dns_map
  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 rsh
  inspect rtsp
  inspect esmtp
  inspect sqlnet
  inspect skinny
  inspect sunrpc
  inspect xdmcp
  inspect sip
  inspect netbios
  inspect tftp
  inspect ip-options
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous




Hi,Could you issue this


Could you issue this command?

>nslookup diskstation


Also, make sure you've set up correctly the host file/zone records on your DNS (