06-25-2012 07:26 AM - edited 03-11-2019 04:22 PM
Hello everybody,
i have to replace our zywall with an 5520 asa.
the following configuration:
outside-ip: 82.218.6.10/255.255.255.255
default route 82.218.6.254
inside-ip: 10.0.1.201/255.255.0.0 dhcp 10.0.5.1-10.0.5.100
wlan-ip: 192.168.0.1/255.255.255.0 dhcp 192.168.0.2-100
dmz: 82.218.135.6/255.255.255.248
our mailserver(dmz-network) 82.218.135.3 is connected to the dmz.
an rdp-server(inside-network) 10.0.1.200:3389 should be reached from 82.218.6.10:3389
connections from inside out outside, inside to dmz and inside to wlan.
connections from wlan to outside, wlan to dmz
connections from dmz to outside
should be possible.
connection from outside to dmz only for port 25,110,143,80,443,22 on ip 82.218.135.3
connections from outside 82.218.6.10:3389 to ip 10.1.0.200:3389
i have problems to implement the connection to dmz and rdp-server
can anyone help me ?
mike
my asa 5520 vers 8.3(1) configuration looks like below.
: Saved
:
ASA Version 8.3(1)
!
hostname ciscoasa
enable password BAAHMFij1MQkOyaD encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface GigabitEthernet0/0
nameif outside
security-level 100
ip address 82.218.6.10 255.255.255.0
!
interface GigabitEthernet0/1
nameif inside
security-level 100
ip address 10.0.1.201 255.255.0.0
!
interface GigabitEthernet0/2
description WLAN
nameif wlan
security-level 100
ip address 192.168.0.1 255.255.255.0
!
interface GigabitEthernet0/3
nameif dmz
security-level 100
ip address 82.218.135.6 255.255.255.248
!
interface Management0/0
nameif management
security-level 50
ip address 192.168.1.1 255.255.255.0
management-only
!
ftp mode passive
clock timezone CEST 1
clock summer-time CEDT recurring last Sun Mar 2:00 last Sun Oct 3:00
same-security-traffic permit inter-interface
object network mailserver
host 82.218.135.3
object service RDP
service tcp source eq 3389 destination eq 3389
object network rdpserver
host 10.0.1.200
object-group service DM_INLINE_TCP_1 tcp
port-object eq www
port-object eq ssh
port-object eq https
port-object eq imap4
port-object eq pop3
port-object eq smtp
access-list outside_access_in extended permit object RDP any host 10.0.1.200
access-list outside_access_in extended permit tcp any object mailserver object-group DM_INLINE_TCP_1
access-list outside_access_in extended permit object RDP any object rdpserver
access-list outside_access_in extended permit ip any any
access-list inside_access_in extended permit ip any any
access-list dmz_access_in extended permit ip any any
access-list dmz_access_in extended permit ip 10.0.0.0 255.255.0.0 82.218.135.0 255.255.255.248
access-list dmz_access_in extended permit ip 192.168.0.0 255.255.255.0 82.218.135.0 255.255.255.248
access-list wlan_access_in extended permit ip any any
pager lines 24
logging enable
logging asdm informational
mtu management 1500
mtu outside 1500
mtu inside 1500
mtu wlan 1500
mtu dmz 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
icmp permit any inside
no asdm history enable
arp timeout 14400
nat (inside,outside) source dynamic any interface
nat (wlan,outside) source dynamic any interface
nat (dmz,outside) source dynamic any interface
!
object network mailserver
nat (dmz,outside) static mailserver service tcp www www
access-group outside_access_in in interface outside
access-group inside_access_in in interface inside
access-group wlan_access_in in interface wlan
access-group dmz_access_in in interface dmz
route outside 0.0.0.0 0.0.0.0 82.218.6.254 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 192.168.1.0 255.255.255.0 management
http 10.0.0.0 255.255.0.0 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 timeout 5
console timeout 0
dhcp-client client-id interface outside
dhcpd address 192.168.1.2-192.168.1.254 management
dhcpd enable management
!
dhcpd address 10.0.5.1-10.0.5.100 inside
dhcpd dns 10.1.1.254 interface inside
dhcpd option 3 ip 10.0.1.201 interface inside
dhcpd enable inside
!
dhcpd address 192.168.0.2-192.168.0.100 wlan
dhcpd dns 10.1.1.254 interface wlan
dhcpd option 3 ip 192.168.0.1 interface wlan
dhcpd enable wlan
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
ntp server 91.118.20.250 source outside prefer
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
!
service-policy global_policy global
prompt hostname context
Cryptochecksum:d249b8f11ad9acf55f444b9f4f3ee7bb
: end
ciscoasa(config)#
06-25-2012 07:38 AM
Hi Michael,
For the RDP server you would need:
object server RDP
service tcp destination eq 3389
nat (outside,inside) source static any any destination static interface rdpserver service RDP RDP
access-list outside_access_in extended permit any host 10.0.1.200 eq 3389
The RDP server should work after this.
Similarly, ity would work for other services, with just different port numbers and IP's, but same syntax.
Hope that helps.
Thanks,
Varun Rao
Security Team,
Cisco TAC
06-25-2012 08:45 AM
Hi Varun,
i think you mean object service
rdpserver is not defined.
i change the outside-network to 10.1.1.99/24 gateway 10.1.1.254 for testing inside.
i inserted the following code, but it dont work.
object service RDP
service tcp destination eq 3389
object network rdpserver
host 10.0.1.200
nat (outside,inside) source static any any destination static interface rdpserver service RDP RDP
access-list outside_access_in extended permit tcp any host 10.0.1.200 eq 3389
ciscoasa# packet-tracer input outside tcp 10.1.1.1 12123 10.0.1.200 3389
Phase: 1
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 10.0.0.0 255.255.0.0 inside
Phase: 2
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit Rule
Additional Information:
Phase: 3
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:
Phase: 4
Type: NAT
Subtype:
Result: ALLOW
Config:
nat (outside,inside) source static any any destination static interface rdpserver service RDP RDP
Additional Information:
Static translate 10.1.1.1/12123 to 10.1.1.1/12123
Phase: 5
Type: NAT
Subtype: rpf-check
Result: DROP
Config:
nat (outside,inside) source static any any destination static interface rdpserver service RDP RDP
Additional Information:
Result:
input-interface: outside
input-status: up
input-line-status: up
output-interface: inside
output-status: up
output-line-status: up
Action: drop
Drop-reason: (acl-drop) Flow is denied by configured rule
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