Tech Support > Computer Hardware > Routers > Newbie VPN Question - Part Two
Newbie VPN Question - Part Two
Posted by Buck Rogers on June 16th, 2005


Hello,

Thanks for all the input I've received so far.

After my last post, I did config factory-default, wr m, and reload. I
then re-configured based on input received from Mr. Roberson here.

My intentions are as follows for my PIX501:

Allow 9 individuals VPN accessability (L2TP) from their homes to the
internal network via cable modem.

Home -> Cable Modem -> Internet -> Work DSL -> Pix501 -> Work Server

I have configured the PIX via the PDM GUI's VPN Wizard to test one of
the users as noted in the config file below. The individuals' home
computer is WinXP. I have configured a new L2TP VPN connection via
the internet on the home computer.

I have the following questions on the config file I've posted.

1. Access-list inside crypto-map lists 10.0.10.16 255.255.255.240.
Why? Gateway is 10.0.0.1 255.255.0.0. Same with access list outside?

2. PDM location is the same IP and Subnet Mask as #1 above. Why?

3. Does the confuguration seem resonable based on what I want to
accomplish?

When I tried to connect to the office via the home computer, no luck.
Received an error 678 Not responding. I can successfully ping the
static IP address assigned to the outside IP address of the PIX.

Firewalls are off at home during this test. Computer connected
directly to cable modem at home during test.

Any input to help me get on the right track would be appreciated.

I can post the Win VPN connection properties if needed.

PIX501 config follows: I have intentionally double spaced after any
line wrap.

Building configuration...
: Saved
:
PIX Version 6.3(4)
interface ethernet0 auto
interface ethernet1 100full
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password xxxxxxxx encrypted
passwd xxxxxxxxxxx encrypted
hostname pixfirewall
domain-name xxxxxx
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 10.0.10.16
255.255.255.240

access-list outside_cryptomap_dyn_20 permit ip any 10.0.10.16
255.255.255.240

pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside xxx.xxx.xxx.29 255.255.255.252
ip address inside 10.0.0.1 255.255.0.0
ip audit info action alarm
ip audit attack action alarm
ip local pool xxxxxx 10.0.10.20-10.0.10.29
pdm location 10.0.10.16 255.255.255.240 outside
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
route outside 0.0.0.0 0.0.0.0 xxx.xxx.xxx.30 1
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 10.0.0.0 255.255.0.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-l2tp
crypto ipsec transform-set TRANS_ESP_3DES_MD5 esp-3des esp-md5-hmac
crypto ipsec transform-set TRANS_ESP_3DES_MD5 mode transport
crypto dynamic-map outside_dyn_map 20 match address
outside_cryptomap_dyn_20

crypto dynamic-map outside_dyn_map 20 set transform-set
TRANS_ESP_3DES_MD5

crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
isakmp enable outside
isakmp key ******** address 0.0.0.0 netmask 0.0.0.0
isakmp policy 20 authentication pre-share
isakmp policy 20 encryption 3des
isakmp policy 20 hash md5
isakmp policy 20 group 2
isakmp policy 20 lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
vpdn group L2TP-VPDN-GROUP accept dialin l2tp
vpdn group L2TP-VPDN-GROUP ppp authentication chap
vpdn group L2TP-VPDN-GROUP client configuration address local xxxxx
vpdn group L2TP-VPDN-GROUP client authentication local
vpdn group L2TP-VPDN-GROUP l2tp tunnel hello 60
vpdn username xxxxx password *********
vpdn username xxxxx password *********
vpdn enable outside
dhcpd address 10.0.0.2-10.0.0.129 inside
dhcpd dns xxx.xxx.xxx.98 xxx.xxx.xxx.42
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
dhcpd enable inside
terminal width 80
Cryptochecksum:62012c50ba73f45724c25b8658e7af56
: end
[OK]
pixfirewall(config)#

Regards,

Buck

__________________________________________________ _____________________________
Posted Via Uncensored-News.Com - Accounts Starting At $6.95 - http://www.uncensored-news.com
<><><><><><><> The Worlds Uncensored News Source <><><><><><><><>