Hey everyone,
We got 2 ISPs -------> two ASA 5520 Primary / secondary --------> LAN .
ASA is configured with ACL and Static NAT for our mail , web & ftp servers .
My question is how to configure the 2nd ISP on the ASA to auto switch to the 2nd ISP when the 1st is down with a backup static NAT and backup ACL for the new ISP , in other words how to configure a active static NAT and Backup Static NAT and ACL only for Exchange/Mail Server.
here is the example of our configuration where PIE is Primary ISP & EMC is Backup ISP.
Looking forward to your quick and positive response!
ASA Version 8.2(1)
!
hostname Corp-ASA
enable password 2KFQnbNIdI.2KYOU encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface GigabitEthernet0/0
description LINK TO CORPORATE
nameif CORP
security-level 100
ip address 172.30.8.1 255.255.255.240 standby 172.30.8.2
!
interface GigabitEthernet0/1
description LINK TO PIE
nameif PIE
security-level 0
ip address x.x.x.x x.x.x.x standby x.x.x.x
!
interface GigabitEthernet0/2
description LINK TO EMC
nameif EMC
security-level 0
ip address x.x.x.x x.x.x.x standby x.x.x.x
!
interface GigabitEthernet0/3
description LAN/STATE Failover Interface
!
interface Management0/0
shutdown
no nameif
no security-level
no ip address
!
ftp mode passive
access-list INTERNET extended permit ip any any
access-list ICMP extended permit icmp any any
access-list ICMP extended permit ip any any
access-list EMAIL extended permit ip host172.30.10.50 any
access-list EMAIL extended permit icmp host 172.30.10.0 any
pager lines 24
mtu CORP 1500
mtu PIE 1500
mtu EMC 1500
failover
failover lan unit primary
failover lan interface FO GigabitEthernet0/3
failover polltime unit msec 200 holdtime msec 800
failover polltime interface msec 500 holdtime 5
failover key *****
failover replication http
failover link FO GigabitEthernet0/3
failover interface ip FO 10.0.0.1 255.0.0.0 standby 10.0.0.2
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
global (PIE) 1 interface
global (EMC) 1 interface
nat (CORP) 1 access-list INTERNET
access-group ICMP in interface PIE
access-group ICMP out interface PIE
access-group ICMP in interface EMC
access-group ICMP out interface EMC
!
router ospf 1
router-id 5.5.5.5
network 172.30.8.0 255.255.255.240 area 0
area 0 authentication message-digest
log-adj-changes
default-information originate
!
route PIE 0.0.0.0 0.0.0.0 x.x.x.x 1 track 1
route EMC 0.0.0.0 0.0.0.0 x.x.x.x 254
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
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
sla monitor 1
type echo protocol ipIcmpEcho x.x.x.x interface PIE
num-packets 3
frequency 10
sla monitor schedule 1 life forever start-time now
service resetoutside
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
!
track 1 rtr 1 reachability
telnet 0.0.0.0 0.0.0.0 CORP
telnet timeout 5
ssh 0.0.0.0 0.0.0.0 PIE
ssh timeout 5
console timeout 0
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
username cisco password 3USUcOPFUiMCO4Jk encrypted
!
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 dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect netbios
inspect rsh
inspect rtsp
inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
!
service-policy global_policy global
prompt hostname context
Cryptochecksum:4b27304c57a7d17872c9fbce5250f4d2
: end
