09-25-2005 12:55 PM - edited 02-21-2020 12:25 AM
Greetings--I am working on putting together a Cisco lab, and to that end I have a PIX 506e on the perimeter of my home-network (replacing an ISA box). The PIX is configured with the standard out-of-the-box setup, with a couple of changes (no DHCP Service on inside being the most material).
I can't seem to get inbound access-lists to work properly, however, and when I do... all of my external access goes down! I know I'm missing something fairly simple, and I'm hoping someone here can tell me what it is. I'll attach a dump of my config below.
----- snip -------
Milton# pager 0
Milton# show running-config
: Saved
:
PIX Version 6.3(4)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password xxxx
passwd xxxx
hostname Milton
domain-name clownworld.com
clock timezone PST -8
clock summer-time PDT recurring
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
access-list inside_outbound_nat0_acl permit ip any host 192.168.1.224
access-list outside_cryptomap_dyn_20 permit ip any host 192.168.1.224
access-list INBOUND permit tcp any host 192.168.1.10 eq 57601
access-list INBOUND permit udp any host 192.168.1.10 eq 57601
access-list INBOUND deny ip any any
no pager
logging on
icmp deny any outside
mtu outside 1500
mtu inside 1500
ip address outside dhcp setroute
ip address inside 192.168.1.1 255.255.255.0
ip verify reverse-path interface outside
ip audit info action alarm
ip audit attack action alarm
ip local pool REMOTES 192.168.1.224
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_outbound_nat0_acl
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
access-group INBOUND in interface outside
timeout xlate 0:05:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 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 TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
tftp-server inside 192.168.1.10 PIX_CONFIG_BACKUP
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
crypto dynamic-map outside_dyn_map 20 match address outside_cryptomap_dyn_20
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-AES-256-MD5
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
isakmp enable outside
isakmp policy 20 authentication pre-share
isakmp policy 20 encryption aes-256
isakmp policy 20 hash md5
isakmp policy 20 group 2
isakmp policy 20 lifetime 86400
vpngroup ADMINS address-pool REMOTES
vpngroup ADMINS idle-time 1800
vpngroup ADMINS password ********
telnet timeout 5
ssh 192.168.1.0 255.255.255.0 inside
ssh timeout 5
management-access inside
console timeout 0
dhcpd lease 3000
dhcpd ping_timeout 750
dhcpd domain clownworld.com
dhcpd auto_config outside
terminal width 80
banner motd "This is a test of the Emergency Broadcorping Castration..."
Cryptochecksum:xxxx
: end
09-25-2005 07:16 PM
The static command for the NAT translation is missing and the access-list on the outside interface should have the public IP configured not the private ones.
1.) Remove the old access-list first:
no access-list INBOUND permit tcp any host 192.168.1.10 eq 57601
no access-list INBOUND permit udp any host 192.168.1.10 eq 57601
no access-list INBOUND deny ip any any
Note: You do not have to add
2.) Change access-list to:
access-list INBOUND permit tcp any host PublicIP eq 57601
access-list INBOUND permit udp any host PublicIP eq 57601
access-group INBOUND in interface outside
3a.) Scenario with one Public IP, I assume as you use DHCP ?
PublicIP could be outside interface IP, replace the keyword PublicIP with: < interface outside >
Final config:
access-list INBOUND permit tcp any interface outside eq 57601
access-list INBOUND permit udp any interface outside eq 57601
access-group INBOUND in interface outside
Add a static (Port redirection):
static (inside,outside) tcp interface 57601 192.168.1.10 57601 netmask 0255.255.255.255
static (inside,outside) udp interface 57601 192.168.1.10 57601 netmask 255.255.255.255
After changing all settings execute a:
clear xlate
sincerely
Patrick
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