Cannot Access ASDM Website

[Jason Van Assen]

Hi,

I've received two Cisco ASA 5505 and am unable to connect to the ASDM website on either. Ive done all the basics and but something is clearly wrong somewhere considering its happening on both.

With the default settings on the ASA I am able to ping the ASA from the laptop and vice verse however when trying to browse to https://192.168.1.1 nothing happens at all, no errors etc. IE just shows that the page cannot be displayed, have even tried chrome. Java is installed.

See running-config below:

ASA Version 8.4(5)
!
hostname ciscoasa

names
!
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 192.168.1.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address dhcp setroute
!
ftp mode passive
object network obj_any
subnet 0.0.0.0 0.0.0.0
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
!
object network obj_any
nat (inside,outside) dynamic interface
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 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
telnet timeout 5
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0

dhcpd auto_config outside
!
dhcpd address 192.168.1.5-192.168.1.254 inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
!
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

As you can see the http server is enabled. Something really odd or stupid is going on, any suggestions would be much appreciated.

Thanks in advance.

[Andrew Phirsov]

I'll give you some points, cause i noticed that this info was in the doc you've provided

[Andrew Phirsov]

Explanation is simple. All the modern browsers and java engines do not support legacy encryptions for ssl (you can thing of DES as legacy one). And unless you have strong encryption (3DES/AES) enabled on your ASA and ssl-encryption command entered, connection can't be established, cause in that case ASA only works with DES for encryption, while java and any todays browser requires 3DES as a minimum.

Hope that helps.

[Jason Van Assen]

Thanks for the explanation, that makes sense. Find it a bit strange how these new ASA's didnt come with the key already installed though.

[Andrew Phirsov]

It's simple again. Here in Russia, for example, use of devices with strong-encryption is heavily monitored and controlled by some regulatory bodies. So you can't just simply buy something, like ASA with strong encryption enabled. It just won't pass the toll (If u don't have special permission, of course). So it all comes from regulatory requirements in different countries. It makes possible for Cisco to sell things in those kind of countries, making the choise of enabling features to be of those, who buy.