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05.11.2008 at 02:36PM PDT, ID: 23393127 | Points: 500
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Attachment Details

PIX 515E inside users cannot access DMZ servers

Asked by cyberchrisrock in Cisco PIX Firewall

I have changed service from T1 to ISP, DSL. Previously had a /24 Public block of IPs, now I only have 4 usable Public IPs. I had to change all DMZ servers from Public IP to Private 172.16.x.x and NAT the few Public IPs that I have been given by the  ISP, to the most important servers on the 172.16.x.x DMZ

Problem: The inside network can no longer access the servers on the DMZ, now that they are not using Public IPs, even though there are static mappings for 172.16.x.x to the New.DSL.Public.IP The PIX config is as follows;


asdm image flash:/asdm502.bin
asdm location 192.168.x.x 255.255.255.0 inside
asdm history enable
: Saved
:
PIX Version 7.0(2)
names
!
interface Ethernet0
 speed 100
 duplex full
 nameif outside
 security-level 0
 ip address New.DSL.Public.IP 255.255.255.248
!
interface Ethernet1
 speed 100
 duplex full
 nameif inside
 security-level 100
 ip address 192.168.x.x 255.255.255.0
!
interface Ethernet2
 speed 100
 duplex full
 nameif dmz
 security-level 50
 ip address 172.16.x.x 255.255.255.0
!
 
hostname MyPix
domain-name domain.local
ftp mode passive
clock timezone cst -6
object-group network spam
 network-object Very.Old.Net 255.255.255.0
 network-object host Very.Old.Net
 network-object host Very.Old.Net
access-list outside extended permit tcp any host New.DSL.Public.IP eq www
access-list outside extended permit tcp any host New.DSL.Public.IP eq https
access-list outside extended permit tcp any host New.DSL.Public.IP eq 33893
access-list outside extended permit tcp any host New.DSL.Public.IP eq smtp
access-list outside extended permit tcp any host New.DSL.Public.IP eq pop3
access-list outside extended permit tcp any host New.DSL.Public.IP eq www
access-list outside extended permit tcp any host New.DSL.Public.IP eq https
access-list outside extended permit tcp any host New.DSL.Public.IP eq 8383
access-list outside extended permit tcp any host New.DSL.Public.IP eq ftp
access-list outside extended permit tcp any host New.DSL.Public.IP eq 33893
access-list outside extended permit tcp any host New.DSL.Public.IP eq www
access-list outside extended permit tcp any host New.DSL.Public.IP eq ftp
access-list outside extended permit tcp any host New.DSL.Public.IP eq https
access-list outbound extended deny ip object-group spam any
access-list split_tunnel standard permit 192.168.x.x 255.255.255.0
access-list nonat extended permit ip 192.168.x.x 255.255.255.0 10.20.30.0 255.255.255.0
access-list nonat extended permit ip 192.168.x.x 255.255.255.0 10.20.40.0 255.255.255.0
access-list priv extended permit ip 192.168.x.x 255.255.255.0 172.16.1.0 255.255.255.0
access-list dmz2priv extended permit ip 192.168.x.x 255.255.255.0 72.16.1.0 255.255.255.0
pager lines 24
logging enable
logging timestamp
logging trap notifications
logging host inside 192.168.x.x
mtu outside 1500
mtu inside 1500
mtu dmz 1500
ip verify reverse-path interface outside
ip verify reverse-path interface dmz
ip local pool VPN-Pool 10.20.40.1-10.20.40.254 mask 255.255.255.0
no vpn-addr-assign aaa
no vpn-addr-assign dhcp
monitor-interface outside
monitor-interface inside
monitor-interface dmz
asdm image flash:/asdm502.bin
asdm history enable
arp timeout 14400
nat-control
global (outside) 1 interface
nat (inside) 1 192.168.0.0 255.255.255.0
static (dmz,outside) tcp New.DSL.Public.IP www 172.16.1.3 www netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP 33893 172.16.1.3 33893 netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP https 172.16.1.3 https netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP 8383 172.16.1.2 8383 netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP smtp 172.16.1.2 smtp netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP pop3 172.16.1.2 pop3 netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP 33893 172.16.1.2 33893 netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP www 172.16.1.5 www netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP ftp 172.16.1.5 ftp netmask 255.255.255.255
static (dmz,outside) tcp New.DSL.Public.IP https 172.16.1.5 https netmask 255.255.255.255
access-group outside in interface outside
route outside 0.0.0.0 0.0.0.0 99.154.222.134 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
timeout mgcp-pat 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
aaa-server VPN-Group protocol nt
aaa-server VPN-Group host 192.168.x.x
 timeout 5
 nt-auth-domain-controller housrv2
aaa-server VPN-Group host 192.168.x.x
 timeout 5
 nt-auth-domain-controller nas
group-policy VPN-Group internal
group-policy VPN-Group attributes
 dns-server value 192.168.x. My.Inside.Private.IP#2
 vpn-access-hours none
 vpn-idle-timeout 30
 vpn-session-timeout none
 vpn-filter none
 vpn-tunnel-protocol IPSec
 password-storage disable
 ip-comp disable
 re-xauth disable
 group-lock none
 pfs disable
 split-tunnel-policy tunnelspecified
 split-tunnel-network-list value split_tunnel
 secure-unit-authentication disable
 user-authentication disable
 http server enable
http 192.168.x.x 255.255.255.0 inside
snmp-server host dmz 208.65.176.20 community StringThing
no snmp-server location
no snmp-server contact
snmp-server community The StringThing
snmp-server enable traps snmp
auth-prompt prompt Please Sign In
auth-prompt accept Welcome To My Company
auth-prompt reject Please Check Your Cap and Num Lock Keys and Try Again
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto dynamic-map dyn 1 set transform-set ESP-3DES-SHA
crypto map mymap 20 ipsec-isakmp dynamic dyn
crypto map mymap interface outside
isakmp enable outside
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption 3des
isakmp policy 10 hash sha
isakmp policy 10 group 2
isakmp policy 10 lifetime 86400
isakmp nat-traversal  20
telnet 192.168.x.x 255.255.255.255 inside
telnet 192.168.x.x 255.255.255.255 inside
telnet 192.168.x.x 255.255.255.0 inside
telnet timeout 5
ssh 0.0.0.0 0.0.0.0 outside
ssh 0.0.0.0 0.0.0.0 inside
ssh timeout 5
ssh version 1
console timeout 5
dhcprelay server 192.168.x.x inside
dhcprelay server 192.168.x.x inside
tunnel-group VPN-Group type ipsec-ra
tunnel-group VPN-Group general-attributes
 address-pool VPN-Pool
 authentication-server-group VPN-Group
 default-group-policy VPN-Group
tunnel-group VPN-Group ipsec-attributes
 pre-shared-key *
!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map global_policy
 class inspection_default
  inspect dns maximum-length 512
  inspect ftp
  inspect h323 h225
  inspect h323 ras
  inspect http
  inspect netbios
  inspect rsh
  inspect rtsp
  inspect skinny
  inspect sqlnet
  inspect sunrpc
  inspect tftp
  inspect sip
  inspect xdmcp
!
service-policy global_policy global
ntp authentication-key 1 md5 *
ntp trusted-key 1
ssl encryption des-sha1 rc4-md5
command-alias exec c con t
command-alias exec r sh run
command-alias exec i sh int ip bri
: end


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