I am wondering if someone can shed some light on this for me. I have a new ASA 5505 with a somewhat simple config. I want to set up a guest VLAN on it for a guest wireless connection.
I set up the ASA with the VLAN, made a trunk port, set up DHCP (on the ASA) on the guest VLAN, configured NAT, etc. Everything seem to be working with that. Guests are getting address on the correct subnet, etc.
The only issue I have is that the Guest VLAN (192.168.22.0) can get to the secure (VLAN1 - 172.16.0.0). I set up the guest VLAN (VLAN 5) with a security level of 10, the secure with a level of 100. I figured that would be enough. To stop the guest from accessing the secure, I had to throw on an ACL (access-list Guest-VLAN_access_in line 1 extended deny ip any 172.16.0.0 255.255.255.0)
Can someone show me what I did wrong?
Thank you for any help!
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To create the VLAN, I did the following:
int vlan5
nameif Guest-VLAN
security-level 10
ip address 192.168.22.1 255.255.255.0
no shutdown
int Ethernet0/1
switchport trunk allowed vlan 1 5
switchport trunk native vlan 1
switchport mode trunk
no shutdown
below is the whole config.
Result of the command: "sho run"
: Saved
:
ASA Version 9.1(3)
!
hostname ciscoasa
enable password zGs7.eQ/0VxLuSIs encrypted
xlate per-session deny tcp any4 any4
xlate per-session deny tcp any4 any6
xlate per-session deny tcp any6 any4
xlate per-session deny tcp any6 any6
xlate per-session deny udp any4 any4 eq domain
xlate per-session deny udp any4 any6 eq domain
xlate per-session deny udp any6 any4 eq domain
xlate per-session deny udp any6 any6 eq domain
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
switchport trunk allowed vlan 1,5
switchport trunk native vlan 1
switchport mode trunk
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
interface Vlan1
nameif inside
security-level 100
ip address 172.16.0.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address <External IP/Mask>
!
interface Vlan5
nameif Guest-VLAN
security-level 10
ip address 192.168.22.1 255.255.255.0
!
boot system disk0:/asa913-k8.bin
ftp mode passive
object network obj_any
subnet 0.0.0.0 0.0.0.0
object network Inside_Server1_80
host <Inside_server1_IP>
object network Inside_Server1_25
host <Inside_server1_IP>
object network Inside_Server1_443
host <Inside_server1_IP>
object network Inside_Server1_RDP
host <Inside_server1_IP>
object service RDP
service tcp destination eq 3389
object network Outside_Network1
host <Outside_Network_IP>
object network Outside_Network2
host <Outside_Network_IP>
object network Outside_Network2
host <Outside_Network_IP>
object network TERMINALSRV_RDP
host <Inside_server2_IP>
object network Inside_Server2_RDP
host <Inside_Server2_IP>
object-group network Outside_Network
network-object object Outside_Network1
network-object object Outside_Network2
object-group network RDP_Allowed
description Group used for hosts allowed to RDP to Inside_Server1
network-object object <Outside_Network_3>
group-object Outside_Network
object-group network SBS_Services
network-object object Inside_Server1_25
network-object object Inside_Server1_443
network-object object Inside_Server1_80
object-group service SBS_Service_Ports
service-object tcp destination eq www
service-object tcp destination eq https
service-object tcp destination eq smtp
access-list inside_access_in extended permit ip any any
access-list outside_access_in extended permit object-group SBS_Service_Ports any object-group SBS_Services
access-list outside_access_in extended permit object RDP any object TERMINALSRV_RDP
access-list outside_access_in extended permit object RDP object-group RDP_Allowed object Inside_Server1_RDP
access-list outside_access_in extended permit object RDP object-group RDP_Allowed object Inside_Server2_RDP
access-list Guest-VLAN_access_in extended deny ip any 172.16.0.0 255.255.255.0
access-list Guest-VLAN_access_in extended permit ip any any
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu Guest-VLAN 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-714.bin
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
!
object network obj_any
nat (inside,outside) dynamic interface
object network Inside_Server1_80
nat (inside,outside) static interface service tcp www www
object network Inside_Server1_25
nat (inside,outside) static interface service tcp smtp smtp
object network Inside_Server1_443
nat (inside,outside) static interface service tcp https https
object network Inside_Server1_RDP
nat (inside,outside) static interface service tcp 3389 3389
object network TERMINALSRV_RDP
nat (inside,outside) static <TerminalSRV_outside)IP> service tcp 3389 3389
object network Inside_Server2_RDP
nat (inside,outside) static interface service tcp 3389 3390
!
nat (Guest-VLAN,outside) after-auto source dynamic obj_any interface
access-group inside_access_in in interface inside
access-group outside_access_in in interface outside
access-group Guest-VLAN_access_in in interface Guest-VLAN
route outside 0.0.0.0 0.0.0.0 <Public_GW> 1
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
aaa authentication ssh console LOCAL
http server enable
http 192.168.1.0 255.255.255.0 inside
http 172.16.0.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec security-association pmtu-aging infinite
crypto ca trustpool policy
telnet timeout 5
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0
dhcpd auto_config outside
!
dhcpd address 192.168.22.50-192.168.22.100 Guest-VLAN
dhcpd dns 8.8.8.8 4.2.2.2 interface Guest-VLAN
dhcpd lease 43200 interface Guest-VLAN
dhcpd enable Guest-VLAN
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
ntp server 129.6.15.30 prefer
username <Username> VAn7VeaGHX/c7zWW encrypted privilege 15
!
class-map global-class
match default-inspection-traffic
!
!
policy-map global-policy
class global-class
inspect icmp
inspect icmp error
inspect pptp
!
service-policy global-policy global
prompt hostname context
no call-home reporting anonymous
Cryptochecksum:7f5d70668ebeb94f49f312612f76c943
: end
