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ASA not allowing internet traffic

Rory Hamaker
Level 1
Level 1

Guys I am sorry to ask dumb questions here but i am about to hit my head on the wall.  I have an ASA 5506 that i have configured on my network to go a small development style network on inside my home.  G0/1 is connected to my router and is going to the internet just fine, i have port 2 connected to a blackbox Web-Smart switch (listed as l2 on their website).  If i plug anything up to the switch it will not get an ip address except the computer that i used to configure the ASA with, and even that computer will not get to the outside world.  If i plug my management system directly to the ASA in port 2, everything works as expected and i can get out.  I dont have another switch to test with so i am kind of limited, but it seems like a config problem i have made on the ASA.

4 Replies 4

Moh Mogh
Level 1
Level 1

Hi,

an output of show run, excluding any possible sensitive information, would be helpful.

As a checklist, make sure you have defined correct IP addressing, NAT, access-list and security-level, plus interface zone definitions.

One question, do you want the ASA work as a DHCP server? Have you already configured to behave so?

Regards,
Mohammad Moghaddas

OK so, I believe yes I have defined the addressing correctly.  I have it configured right now pretty much wide open and a security level of 0.  The DHCP server is configured to serve an address range of 192.168.1.50 - 200 and seems to be working on my management computer as thus. 

Here is the config.

Result of the command: "show running-config"

: Saved

:
: Serial Number: JAD192901YK
: Hardware:   ASA5506, 4096 MB RAM, CPU Atom C2000 series 1250 MHz, 1 CPU (4 cores)
:
ASA Version 9.4(1)
!
hostname **HomeASA
domain-name **home.com

names
zone local
!
interface GigabitEthernet1/1
 nameif outside
 security-level 0
 zone-member local
 ip address dhcp setroute
!
interface GigabitEthernet1/2
 nameif inside
 security-level 0
 zone-member local
 ip address 192.168.1.1 255.255.255.0
!
interface GigabitEthernet1/3
 shutdown
 no nameif
 security-level 0
 no ip address
!
interface GigabitEthernet1/4
 shutdown
 no nameif
 no security-level
 no ip address
!
interface GigabitEthernet1/5
 shutdown
 no nameif
 no security-level
 no ip address
!
interface GigabitEthernet1/6
 shutdown
 no nameif
 no security-level
 no ip address
!
interface GigabitEthernet1/7
 shutdown
 no nameif
 no security-level
 no ip address
!
interface GigabitEthernet1/8
 shutdown
 no nameif
 no security-level
 no ip address
!
interface Management1/1
 management-only
 no nameif
 no security-level
 no ip address
!
ftp mode passive
dns server-group DefaultDNS
 domain-name **home.com
same-security-traffic permit inter-interface
object network obj_any
 subnet 0.0.0.0 0.0.0.0
access-list inside_access_in extended permit ip any any
access-list outside_access_in extended permit ip any any
pager lines 24
logging asdm informational
mtu outside 1500
mtu inside 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
!
object network obj_any
 nat (any,outside) dynamic interface
access-group outside_access_in in interface outside
access-group inside_access_in in interface inside
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
user-identity default-domain LOCAL
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
service sw-reset-button
crypto ipsec security-association pmtu-aging infinite
crypto ca trustpoint _SmartCallHome_ServerCA
 no validation-usage
 crl configure
crypto ca trustpool policy
crypto ca certificate chain _SmartCallHome_ServerCA
 certificate ca 6ecc7aa5a7032009b8cebcf4e952d491
  quit
telnet timeout 5
no ssh stricthostkeycheck
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0
dhcpd auto_config outside
!
dhcpd address 192.168.1.50-192.168.1.200 inside
dhcpd dns 192.168.1.5 97.64.148.90 interface inside
dhcpd domain ***home.com interface inside
dhcpd enable inside
!
no threat-detection basic-threat
no threat-detection statistics access-list
no threat-detection statistics tcp-intercept
dynamic-access-policy-record DfltAccessPolicy
!
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 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
call-home reporting anonymous
Cryptochecksum:67ea11aecc76a216f98c795c163e6dc4
: end

Just as a test, I moved my DHCP to a VM server and it has made no change.  I have disabled the DHCP feature on the ASA now though so I can at least continue testing sans internet.

Also, while I am adding info, I tried pinging 8.8.8.8 which is Googles DNS server.  When I am plugged in via the ASA directly, it returns pings no problem.  When I am connected through the switch, it returns a reply about once in every 15 attempts.  So it seems the ASA is letting traffic through but not sure about where to route it once it returns

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