ASA 5505 cannot ping Internet hosts by name?

From my internal XP client I can ping hosts by IP address but not by
name. I also cannot surf the web since name resolution does not work.
My XP client's default gateway and DNS setting points to 10.1.1.1,
which is the inside interface of the ASA.

My Config is below, anyone? Thanks! >


ASA Version 8.0(3)
!
hostname ciscoasa
domain-name default.domain.invalid
enable password xxxxxxxxxxx encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 10.1.1.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
pppoe client vpdn group bellsouth
ip address pppoe setroute
!
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
!
passwd xxxxxxxxxxx encrypted
boot system disk0:/asa803-k8.bin
ftp mode passive
dns server-group DefaultDNS
domain-name default.domain.invalid
same-security-traffic permit intra-interface
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-603.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
route outside 0.0.0.0 0.0.0.0 65.14.x.x
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 uauth 0:05:00 absolute
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 10.1.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown
coldstart
telnet timeout 5
ssh timeout 5
console timeout 0
vpdn group bellsouth request dialout pppoe
vpdn group bellsouth localname
vpdn group bellsouth ppp authentication pap
vpdn username password ********* store-local
dhcpd auto_config outside
!
dhcpd address 10.1.1.2-10.1.1.33 inside
dhcpd enable inside
!

threat-detection basic-threat
threat-detection statistics access-list
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
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
inspect dns preset_dns_map
!
service-policy global_policy global
prompt hostname context
:end

 

dns

i think you need this statement..

dhcpd dns xx.xx.xx.xx

 

Hi gipper

I'm not 100% sure, but i think the PIX/ASA can't act as a dns server.
I also take a look in the documentation, but i can't find any hint
about. If I'm right, you must specify the DNS Server from your
internal server (if you have one) or you give dns servers from your
isp:

dhcpd dns 198.162.11.2 198.162.11.3

cu

 

Point your clients at a DNS server and then DNS resolution should work. The
ASA is not a DNS server.

Chris.

 

For your setup to work, BellSouth needs to provide their DNS server
info as part of PPP info

the



I do not have access to an ASA 5505 so cnannot provide the appropriate
show or debug commands.

As an interim measure, config a "dhcpd dns" command manually


NameServer: AUTH-DNS.ASM.BELLSOUTH.NET 205.152.37.24
NameServer: AUTH-DNS.MIA.BELLSOUTH.NET 205.152.144.24
NameServer: AUTH-DNS.MSY.BELLSOUTH.NET 205.152.132.24


ping the above BellSouthe DNS server IP addresses to see which
BellSouth DNS server responds the fastest from where you are.


dhcpd dns < insert BellSouth DNS server IP address here > interface
inside

Then renew your DHCP lease on your PC and check output of ipconfig /
all to see if PC was given the DNS server IP address
that you manually configured on the ASA.

If so you should be able to ping by name



Then you can work on the original problem of getting DNS info passed
automatically PPPOE -> ASA DHCP server --> PC (DHCL client)

 

Guys, sorry I didn't explain it better, I'm not trying to make the ASA
act as DNS, just trying to get it to pass through the DNS info from my
ISP. Merv hit it on the head. What baffles me is that I had the
entry checked in ASDM to enable DHCP auto configuration from interface
outside, but that didn't seem to work? For some reason the ASA
refuses to pass my BellSouth DNS server info to internal DHCP
clients. My D-Link did this without an issue. Anyway, adding dhcpd
dns x.x.x.x worked! I can't tell you how many hours I've spent
troubleshooting this. Thank you Merv!!!!

 

OP,

okay glad the workaround helped you out.

Now to get to the root cause of your issue.

Need to find out if BellSouth is passing the DNS server info via PPP



see Cisco docs "Configuring DHCP, DDNS, and WCCP Services"

http://cco.cisco.com/en/US/docs/security/asa/asa72/configuration/guide/dhcp.html#wp1059065


For example, to assign the range 10.0.1.101 to 10.0.1.110 to hosts
connected to the inside interface, enter the following commands:

hostname(config)# dhcpd address 10.0.1.101-10.0.1.110 inside
hostname(config)# dhcpd dns 209.165.201.2 209.165.202.129
hostname(config)# dhcpd wins 209.165.201.5
hostname(config)# dhcpd lease 3000
hostname(config)# dhcpd domain example.com
hostname(config)# dhcpd enable inside



try
command "show ip address outside pppoe" to see if beside display the
IP{ address assigned during PPP negioations it also shows DNS server
info

could also try

debug pppoe event
debug pppoe packet

Need to clear interface or disconnect outside interfac eand then
reconnect to tripper PPP to restart

So lets get to the point that you know you are gettign the DNS server
info dynamiclally via PPP and then we can go from there.

Anyone knowing the correct ASA show commands fro this please jump in .


Merv

 

Cisco ASA 5505

Hello all,

I have a cisco ASA 5505 set up, and we can connect to it via VPN, nothing is reachable when connected. Cannot ping or resolve dns.

It works just fine for routing as we use it for routing the internet.

Here is the printout:

: Saved
:
ASA Version 8.2(2)
!
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.169.200 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address 12.156.212.50 255.255.255.248
!
interface Vlan3
no forward interface Vlan1
nameif dmz
security-level 50
no ip address
!
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
!
boot system disk0:/asa822-k8.bin
ftp mode passive
clock timezone EST -5
clock summer-time EDT recurring
dns domain-lookup inside
dns domain-lookup outside
dns domain-lookup dmz
dns server-group DefaultDNS
name-server 192.168.169.5
domain-name schunk.com
object-group service VID tcp-udp
description Video Conf port range
port-object range 3230 3253
port-object range 1718 1722
object-group protocol TCPUDP
protocol-object udp
protocol-object tcp
access-list 101 extended permit icmp any any echo-reply
access-list 101 extended permit icmp any any source-quench
access-list 101 extended permit icmp any any time-exceeded
access-list 101 extended permit object-group TCPUDP Germany_Vid 255.255.255.240 host vid object-group VID
access-list inside_nat0_outbound extended permit ip any 192.168.2.0 255.255.255.0
access-list inside_nat0_outbound extended permit ip 192.168.169.0 255.255.255.0 192.168.2.0 255.255.255.0
access-list Tunnel standard permit 192.168.169.0 255.255.255.0
pager lines 24
logging enable
logging buffer-size 8096
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu dmz 1500
ip local pool VPNPool2 192.168.2.200-192.168.2.220 mask 255.255.255.0
ip local pool Eniro 192.168.169.160-192.168.169.170 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-631.bin
asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 192.168.169.0 255.255.255.0
access-group 101 in interface outside
route outside 0.0.0.0 0.0.0.0 12.156.212.49 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
aaa authentication ssh console LOCAL
aaa authentication http console LOCAL
aaa authentication telnet console LOCAL
aaa authorization command LOCAL
http server enable
http 192.168.169.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map outside_dyn_map 20 set pfs
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-SHA
crypto dynamic-map outside_dyn_map 40 set pfs
crypto dynamic-map outside_dyn_map 40 set transform-set ESP-3DES-SHA
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
crypto ca server
shutdown

crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
no vpn-addr-assign aaa
no vpn-addr-assign dhcp
vpn-sessiondb max-session-limit 10
telnet 192.168.169.0 255.255.255.0 inside
telnet timeout 5
ssh 192.168.169.0 255.255.255.0 inside
ssh 0.0.0.0 0.0.0.0 outside
ssh timeout 5
ssh version 2
console timeout 0
dhcpd dns 12.127.17.71 12.127.17.72
dhcpd domain schunk.com
!

vpnclient mode network-extension-mode
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
group-policy EnviroVPN internal
group-policy EnviroVPN attributes
dns-server value 192.168.169.5 12.127.17.71
vpn-simultaneous-logins 10
vpn-tunnel-protocol IPSec
split-tunnel-policy tunnelspecified
split-tunnel-network-list value Tunnel
default-domain value envirotronics.local
tunnel-group EnviroVPN type remote-access
tunnel-group EnviroVPN general-attributes
address-pool VPNPool2
default-group-policy EnviroVPN
tunnel-group EnviroVPN ipsec-attributes
pre-shared-key *****
!
class-map type inspect h323 match-any Video
match media-type video
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map type inspect h323 Teleconferance
description Polycom
parameters
hsi-group 323
hsi 12.156.212.53
endpoint vid dmz
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect rsh
inspect rtsp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
inspect ip-options
inspect h323 ras Teleconferance
!
service-policy global_policy global
prompt hostname context
call-home
profile CiscoTAC-1
no active
destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService
destination address email
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
Cryptochecksum:a8f7dface0c842f545e01f87a3b13f37
: end
asdm image disk0:/asdm-631.bin
asdm location Germany_Vid 255.255.255.240 inside
asdm location vid 255.255.255.255 inside
asdm history enable




Any help would be greatly appreciated! It uses internal dhcp.