From: Charles Church (cchurch@wamnet.com)
Date: Wed Jun 11 2003 - 10:26:05 GMT-3
Daniel,
The access-list won't do anything. Your problem is the
"sysopt connection permit-ipsec" line. It allows (I think) both ESP and IKE
(UDP 500, and IP protocol 50) to always connect TO the PIX. It will not
allow those THROUGH the PIX however. I don't think there are any options on
the PIX to limit connection source addresses. But between shared keys,
certificates, and extended authentication using local accounts or TACACS, it
should be pretty secure being open to anyone. Of course, you could always
block the IPSec on a router outside of the PIX...
Chuck Church
CCIE #8776, MCNE, MCSE
Wam!Net Government Services
13665 Dulles Technology Dr. Ste 250
Herndon, VA 20171
Office: 703-480-2569
Cell: 585-233-2706
cchurch@wamnet.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?search=chuck+church&op=index
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Ji, Daniel
Sent: Tuesday, June 10, 2003 8:18 PM
To: security@groupstudy.com
Cc: ccielab@groupstudy.com
Subject: PIX VPN client remote access question
Hi folks,
I am working on setting up a PIX 501 to do VPN client remote access.
Everything works fine except that the requirement is to have VPN client
SOURCE IP ADDRESS checked for access. In other words, only VPN clients
with specific IP addresses will be allowed to connect to PIX to setup
VPN tunnel. How do I accomplish this? I've tried AccessGroup on the
outside interface but didn't work. Any PIX/VPN guru help me out here?
Thanks a million!
Daniel Ji
------------------------------------------------------------------------
PIX Config fllows:
PIX Version 6.2(2)
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password tVS.P/in/fhLI0xc encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname PIX
domain-name xxxx
fixup protocol ftp 21
fixup protocol http 80
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol ils 389
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol sip 5060
fixup protocol skinny 2000
names
access-list 101 permit ip 192.168.0.0 255.255.255.0 192.168.0.0
255.255.255.0
access-list 10 permit ip host 10.251.31.25 any
pager lines 24
interface ethernet0 10baset
interface ethernet1 10full
mtu outside 1500
mtu inside 1500
ip address outside 10.251.31.190 255.255.255.0
ip address inside 192.168.0.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool medipool 192.168.0.10-192.168.0.15
pdm history enable
arp timeout 14400
nat (inside) 0 access-list 101
access-group 10 in interface outside
route outside 0.0.0.0 0.0.0.0 10.251.31.190 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h323
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 LOCAL protocol local
aaa-server partnerauth protocol radius
aaa-server partnerauth (inside) host 192.168.0.8 cisco123 timeout 5
aaa-server partnerauth (inside) host 143.197.69.113 cisco123 timeout 5
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
no sysopt route dnat
crypto ipsec transform-set mediset esp-3des esp-md5-hmac
crypto dynamic-map dynmap 10 set transform-set mediset
crypto map medimap 10 ipsec-isakmp dynamic dynmap
crypto map medimap client configuration address initiate
crypto map medimap client configuration address respond
crypto map medimap interface outside
isakmp enable outside
isakmp key ******** address 10.251.31.25 netmask 255.255.255.255
isakmp identity address
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption 3des
isakmp policy 10 hash md5
isakmp policy 10 group 2
isakmp policy 10 lifetime 86400
vpngroup medigroup address-pool medipool
vpngroup medigroup dns-server 143.197.69.194
vpngroup medigroup wins-server 143.197.69.194
vpngroup medigroup default-domain xxxxx
vpngroup medigroup split-tunnel 101
vpngroup medigroup idle-time 1800
vpngroup medigroup password ********
telnet timeout 5
ssh timeout 5
terminal width 80
Cryptochecksum:448418097fa51752de762f0c0f02d55c
: end
[OK]
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This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:10:56 GMT-3