05-16-2009 06:12 AM - edited 03-06-2019 05:45 AM
I am going to connect a Pix 501 to a cable modem. It is going to use DHCP. I am going to use the following configuration but have a question. I need to be able to get a Remote Desktop Connection on a server behind the PIX. I am going to have only 1 outside IP address and it's going to be DHCP. Any suggestions on how to get this to work? There is only one machine behing the PIX and possible two. Here is the config I was going to use but I am not sure how to do the NAT/PAT.
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password PVSASRJovmamnVkD encrypted
passwd PVSASRJovmamnVkD encrypted
hostname pixMDC
domain-name keene.com
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
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside dhcp setroute
ip address inside 10.8.6.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm location 10.0.0.0 255.0.0.0 inside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 10.8.6.0 255.255.255.0 0 0
access-group outside_access_in 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 sip-disconnect 0:02:00 sip-invite 0:03:00
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 10.0.0.0 255.0.0.0 inside
http 10.8.6.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet 10.8.6.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd address 10.8.6.2-10.8.6.33 inside
dhcpd dns 151.203.0.84 151.202.0.84
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
terminal width 80
Cryptochecksum:6ca15e834dc867c6f12b46b2bd28a4a8
05-16-2009 10:37 AM
first create the access-list
access-list inbound permit tcp any interface outside eq 3389
apply access-list to interface
access-group inbound in interface outside
Then create the NAT statements
static (inside,outside) tcp interface 3389 xx.xx.xx.xx 3389 netmask 255.255.255.255 0 0
(where xx is the internal address of the workstation you want to connect to.)
I would recommend you changing the outside RDP ports to something different for ex: 3390
you can do this by changing the nat statement
static (inside,outside) tcp interface 3390 xx.xx.xx.xx 3389 netmask 255.255.255.255 0 0
we will also have to change the access-list to access-list inbound permit tcp any interface outside eq 3390
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