site2site distance-VPN and access-PIX - no way?
I have,
I have a problem wrt site2site & VPN remote access on a PIX:
My setup is as follows: PIX (6.3) puts an end to two a site2-site VPN and also should the remote access service clients using the client VPN Cisco (4.0.x).
The problem is with remote access VPN clients, obtain an IP address on their VPN interface, but customers cannot reach anything. (Please note that the site2site VPN runs without problem)
To be precise (see config-excerpts below):
The customer, who has 212.138.109.20 as its IP address gets an IP 10.0.100.1 on his card-VPN which comes from the "vpnpool of the pool.
configured on the PIX. This customer relationships to reach servers on interface 'inside' of the PIX as 10.0.1.28.
However, the client cannot achieve * nothing *-a server on the inside or anything like that (e.g. Internet) outside!
Using Ethereal traces, I discovered that the packets arrive inside interface coming 10.0.100.1 (IP address of the)
VPN - client). I also see the response from the server (10.0.1.28) to 10.0.100.1. However for some reason any package does not thanks to
the PIX to the customer. PIX-newspapers also show packets to and from the VPN client to the inside interface - and * no. * drops. So to my knowledge the packets from server to the VPN client really should be done through the PIX.
I have attached the following as separate files:
(o) the parts of the PIX config
(o) packets showing PIX-log between the VPN client and the server (s) on the interface inside
(o) ethereal-trace done inside the watch interface also packets between VPN client and server (s)
I have really scratched my head for a while on this one, tested a lot of things, but I really don't know what could be a problem with my
config.
After all, it really should be possible to run site2site - and on the same PIX VPN remote access, shouldn't it?
Thank you very much in advance for your help,.
-ewald
I think that your problem is in your ACL and your crypto card:
access-list 101 permit ip 10.0.1.0 255.255.255.0 10.0.2.0 255.255.255.0
access-list 101 permit ip 10.0.0.0 255.255.255.0 10.0.2.0 255.255.255.0
access-list 101 permit ip 10.0.3.0 255.255.255.0 10.0.2.0 255.255.255.0
access-list 101 permit ip 10.0.1.0 255.255.255.0 10.0.100.0 255.255.255.0
correspondence address 1 card crypto loc2rem 101
This means that this map correspond to these addresses. But your dynamic map is one that must match 10.0.100.0, 10.0.1.0 traffic because your pool local ip is 10.0.100.x. I think what is happening is that the return traffic from the lan to vpn clients trying to get out of the static tunnel, which probably does not exist (for the netblocks - you probably have a security association for each pair of netblocks, but not for vpn clients) and so do not.
I would recommend adding these lines:
access-list 105 allow ip 10.0.1.0 255.255.255.0 10.0.2.0 255.255.255.0
access-list 105 allow ip 10.0.0.0 255.255.255.0 10.0.2.0 255.255.255.0
access-list 105 permit 10.0.3.0 ip 255.255.255.0 10.0.2.0 255.255.255.0
no correspondence address 1 card crypto loc2rem 101
correspondence address 1 card crypto loc2rem 105
Then reapply:
loc2rem interface card crypto outside
Tags: Cisco Security
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: Saved
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Crypto ipsec transform-set ESP-DES-SHA esp - esp-sha-hmac
Crypto ipsec transform-set ESP-DES-MD5 esp - esp-md5-hmac
Crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
Crypto ipsec transform-set ESP-3DES-MD5-esp-3des esp-md5-hmac
Crypto ipsec transform-set ESP-AES-128-SHA aes - esp esp-sha-hmac
Crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
Crypto ipsec transform-set ESP-AES-128-MD5-esp - aes esp-md5-hmac
Crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
Crypto ipsec transform-set esp-3des-sha1 esp-3des esp-sha-hmac
Crypto ipsec transform-set esp-SHA-ESP-3DES-3des esp-sha-hmac
life crypto ipsec security association seconds 28800
Crypto ipsec kilobytes of life - safety 4608000 association
Crypto ipsec df - bit clear-df outside_pri
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 pfs Group1 set
Crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 value transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA MD5-ESP-3DES ESP-DES-SHA ESP-DES-MD5
card crypto outside_pri_map 1 match address outside_pri_1_cryptomap
card crypto outside_pri_map 1 set pfs
peer set card crypto outside_pri_map 1 50.75.217.246
card crypto outside_pri_map 1 set of transformation-ESP-AES-256-MD5
card crypto outside_pri_map 2 match address outside_pri_cryptomap
peer set card crypto outside_pri_map 2 216.59.44.220
card crypto outside_pri_map 2 the value transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA MD5-ESP-3DES ESP-DES-SHA ESP-DES-MD5
86400 seconds, duration of life card crypto outside_pri_map 2 set security-association
card crypto outside_pri_map 3 match address outside_pri_cryptomap_1
peer set card crypto outside_pri_map 3 216.59.44.220
outside_pri_map crypto map 3 the value transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA MD5-ESP-3DES ESP-DES-SHA ESP-DES-MD5
outside_pri_map card crypto 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP
card crypto outside_pri_map interface outside_pri
crypto isakmp identity address
ISAKMP crypto enable outside_pri
crypto ISAKMP policy 5
preshared authentication
3des encryption
sha hash
Group 2
life 86400
crypto ISAKMP policy 10
preshared authentication
the Encryption
sha hash
Group 2
life 86400
crypto ISAKMP policy 30
preshared authentication
aes-256 encryption
md5 hash
Group 2
life 86400
crypto ISAKMP policy 50
preshared authentication
aes encryption
md5 hash
Group 2
life 86400
!
track 1 rtr 123 accessibility
Telnet timeout 5
SSH 192.168.1.0 255.255.255.0 inside
SSH timeout 5
Console timeout 0
management-access inside
dhcpd auto_config outside_pri
!
dhcpd address 192.168.1.51 - 192.168.1.245 inside
dhcpd dns 8.8.8.8 8.8.4.4 interface inside
rental contract interface 86400 dhcpd inside
dhcpd field LM inside interface
dhcpd allow inside
!
a basic threat threat detection
statistical threat detection port
Statistical threat detection Protocol
Statistics-list of access threat detection
a statistical threat detection host number rate 2
no statistical threat detection tcp-interception
WebVPN
port 980
allow inside
Select outside_pri
enable SVC
attributes of Group Policy DfltGrpPolicy
VPN-idle-timeout no
Protocol-tunnel-VPN IPSec l2tp ipsec svc webvpn
internal GroupPolicy2 group strategy
attributes of Group Policy GroupPolicy2
Protocol-tunnel-VPN IPSec svc
internal levelwingVPN group policy
attributes of the strategy of group levelwingVPN
Protocol-tunnel-VPN IPSec svc webvpn
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list levelwingVPN_splitTunnelAcl
username password encrypted Z74.JN3DGMNlP0H2 privilege 0 aard
aard attribute username
VPN-group-policy levelwingVPN
type of remote access service
rcossentino 4UpCXRA6T2ysRRdE encrypted password username
username rcossentino attributes
VPN-group-policy levelwingVPN
type of remote access service
bcherok evwBWqKKwrlABAUp encrypted password username
username bcherok attributes
VPN-group-policy levelwingVPN
type of remote access service
rscott nIOnWcZCACUWjgaP encrypted password privilege 0 username
rscott username attributes
VPN-group-policy levelwingVPN
sryan 47u/nJvfm6kprQDs password encrypted username
sryan username attributes
VPN-group-policy levelwingVPN
type of nas-prompt service
username, password cbruch a8R5NwL5Cz/LFzRm encrypted privilege 0
username cbruch attributes
VPN-group-policy levelwingVPN
type of remote access service
apellegrino yy2aM21dV/11h7fR password encrypted username
username apellegrino attributes
VPN-group-policy levelwingVPN
type of remote access service
username rtuttle encrypted password privilege 0 79ROD7fRw5C4.l5
username rtuttle attributes
VPN-group-policy levelwingVPN
username privilege 15 encrypted password vJFHerTwBy8dRiyW levelwingadmin
username password nbrothers Amjc/rm5PYhoysB5 encrypted privilege 0
username nbrothers attributes
VPN-group-policy levelwingVPN
clong z.yb0Oc09oP3/mXV encrypted password username
clong attributes username
VPN-group-policy levelwingVPN
type of remote access service
username, password finance 9TxE6jWN/Di4eZ8w encrypted privilege 0
username attributes finance
VPN-group-policy levelwingVPN
Protocol-tunnel-VPN IPSec l2tp ipsec svc webvpn
type of remote access service
IPSec-attributes tunnel-group DefaultL2LGroup
Disable ISAKMP keepalive
tunnel-group 50.75.217.246 type ipsec-l2l
IPSec-attributes tunnel-group 50.75.217.246
pre-shared-key *.
Disable ISAKMP keepalive
type tunnel-group levelwingVPN remote access
tunnel-group levelwingVPN General-attributes
address LVCHSVPN pool
Group Policy - by default-levelwingVPN
levelwingVPN group of tunnel ipsec-attributes
pre-shared-key *.
tunnel-group 216.59.44.221 type ipsec-l2l
IPSec-attributes tunnel-group 216.59.44.221
pre-shared-key *.
tunnel-group 216.59.44.220 type ipsec-l2l
IPSec-attributes tunnel-group 216.59.44.220
pre-shared-key *.
Disable ISAKMP keepalive
!
!
!
Policy-map global_policy
!
context of prompt hostname
Cryptochecksum:ed7f4451c98151b759d24a7d4387935b
: end
Hello
It seems to me that you've covered most of the things.
You however not "said" Configuring VPN L2L that traffic between the pool of VPN and network camp should be in tunnel
outside_pri_cryptomap to access extended list ip 192.168.12.0 allow 255.255.255.0 object-group CHS-Colo
Although naturally the remote end must also the corresponding configurations for users of VPN clients be able to pass traffic to the site of the camp.
-Jouni
-
PIX-to-client VPN and how to reach on other interfaces systems
Hi all
I've implemented a Pix-to-Client VPN and it seems works ok.
As you can see, customer gets the same inside the class address (192.168.100.x) so I can reach across systems.
My questions are:
If I give different subnet pool addresses, how can 1 I still reach inside systems?
2 if I have other systems on these interfaces such dmz1 (192.168.10.0) dmz2 (192.168.20.0) how to get to these systems of the
even the client vpn access?
Concerning
Alberto Brivio
IP local pool vpnpool1 192.168.100.70 - 192.168.100.80
access-list 102 permit ip 192.168.100.0 255.255.255.0 192.168.100.0 255.255.255.0
NAT (inside) - 0 102 access list
Permitted connection ipsec sysopt
Crypto ipsec transform-set esp - esp-md5-hmac trmset1
Crypto-map dynamic map2 10 set transform-set trmset1
map map1 10 ipsec-isakmp crypto dynamic map2
map1 outside crypto map interface
ISAKMP allows outside
ISAKMP identity address
part of pre authentication ISAKMP policy 10
encryption of ISAKMP policy 10
ISAKMP policy 10 md5 hash
10 2 ISAKMP policy group
ISAKMP life duration strategy 10 86400
vpngroup address vpnpool1 pool test
vpngroup split tunnel 102 test
vpngroup test 1800 idle time
test vpngroup password *.
It is generally preferable to use another range of IP addresses. The PIX will know that the VPN Client uses that vary and route it properly whitch is not the case when you are using the same IP range as the inside interface.
To access another interface use the SHEEP (your ACL 102) access list which disables NAT between the VPN and the neworks to which you want to connect.
Example of config:
access-list allowed SHEEP Internalnet ISubnetMask VPN-pool 255.255.255.0 ip
access-list allowed SHEEP DMZnet DMZSubnetMask VPN-pool 255.255.255.0 ip
NAT (inside) 0 SHEEP
AAA-server local LOCAL Protocol
AAA authentication secure-http-client
Permitted connection ipsec sysopt
Crypto ipsec transform-set esp-3des esp-md5-hmac TRANS
Crypto-map dynamic outside_dyn_map 20 game of transformation-TRANS
card crypto 65535 REMOTE ipsec-isakmp dynamic outside_dyn_map
REMOTE client authentication card crypto LOCAL
interface card crypto remotely outside
ISAKMP allows outside
ISAKMP identity address
ISAKMP nat-traversal 20
part of pre authentication ISAKMP policy 10
ISAKMP policy 10 3des encryption
ISAKMP policy 10 md5 hash
10 2 ISAKMP policy group
ISAKMP life duration strategy 10 86400
IP pool local VPNPool x.y.z.1 - x.y.z.254
vpngroup VPNGroup address pool VPNPool
vpngroup VPNGroup dns-server dns1 dns2
vpngroup VPNGroup default-domain localdomain
vpngroup idle 1800 VPNGroup-time
vpngroup VPNGroup password grouppassword
username, password vpnclient vpnclient-password
sincerely
Patrick
-
remote VPN and vpn site to site vpn remote users unable to access the local network
As per below config remote vpn and vpn site to site vpn remote users unable to access the local network please suggest me a required config
The local 192.168.215.4 not able ping server IP this server connectivity remote vpn works fine but not able to ping to the local network vpn users.
ASA Version 8.2 (2)
!
host name
domain kunchevrolet
activate r8xwsBuKsSP7kABz encrypted password
r8xwsBuKsSP7kABz encrypted passwd
names of
!
interface Ethernet0/0
nameif outside
security-level 0
PPPoE client vpdn group dataone
IP address pppoe
!
interface Ethernet0/1
nameif inside
security-level 50
IP 192.168.215.2 255.255.255.0
!
interface Ethernet0/2
nameif Internet
security-level 0
IP address dhcp setroute
!
interface Ethernet0/3
Shutdown
No nameif
no level of security
no ip address
!
interface Management0/0
Shutdown
No nameif
no level of security
no ip address
management only
!
passive FTP mode
clock timezone IST 5 30
DNS server-group DefaultDNS
domain kunchevrolet
permit same-security-traffic intra-interface
object-group network GM-DC-VPN-Gateway
object-group, net-LAN
access extensive list ip 192.168.215.0 sptnl allow 255.255.255.0 192.168.2.0 255.255.255.0
192.168.215.0 IP Access-list extended sheep 255.255.255.0 allow 192.168.2.0 255.255.255.0
tunnel of splitting allowed access list standard 192.168.215.0 255.255.255.0
pager lines 24
Enable logging
asdm of logging of information
Outside 1500 MTU
Within 1500 MTU
MTU 1500 Internet
IP local pool VPN_Users 192.168.2.1 - 192.168.2.250 mask 255.255.255.0
ICMP unreachable rate-limit 1 burst-size 1
enable ASDM history
ARP timeout 14400
NAT-control
Global 1 interface (outside)
NAT (inside) 1 0.0.0.0 0.0.0.0
Route outside 0.0.0.0 0.0.0.0 59.90.214.1 1
Timeout xlate 03:00
Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00
Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00
Timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-registration DfltAccessPolicy
the ssh LOCAL console AAA authentication
AAA authentication LOCAL telnet console
AAA authentication http LOCAL console
AAA authentication enable LOCAL console
LOCAL AAA authentication serial console
Enable http server
x.x.x.x 255.255.255.252 out http
http 192.168.215.0 255.255.255.252 inside
http 192.168.215.0 255.255.255.0 inside
No snmp server location
No snmp Server contact
Server enable SNMP traps snmp authentication linkup, linkdown cold start
Crypto ipsec transform-set esp-3des esp-sha-hmac RIGHT
life crypto ipsec security association seconds 28800
Crypto ipsec kilobytes of life - safety 4608000 association
Crypto-map dynamic dynmap 65500 transform-set RIGHT
card crypto 10 VPN ipsec-isakmp dynamic dynmap
card crypto VPN outside interface
card crypto 10 ASA-01 set peer 221.135.138.130
card crypto 10 ASA - 01 the transform-set RIGHT value
crypto ISAKMP allow outside
crypto ISAKMP policy 10
preshared authentication
3des encryption
sha hash
Group 2
life 86400
crypto ISAKMP policy 65535
preshared authentication
the Encryption
sha hash
Group 2
lifetime 28800
Telnet 192.168.215.0 255.255.255.0 inside
Telnet timeout 5
SSH 0.0.0.0 0.0.0.0 outdoors
SSH timeout 5
Console timeout 0
management-access inside
VPDN group dataone request dialout pppoe
VPDN group dataone localname bb4027654187_scdrid
VPDN group dataone ppp authentication chap
VPDN username bb4027654187_scdrid password * local store
interface for identifying DHCP-client Internet customer
dhcpd dns 218.248.255.141 218.248.245.1
!
dhcpd address 192.168.215.11 - 192.168.215.254 inside
dhcpd allow inside
!
a basic threat threat detection
Statistics-list of access threat detection
no statistical threat detection tcp-interception
Des-sha1 encryption SSL
WebVPN
allow outside
tunnel-group-list activate
internal kun group policy
kun group policy attributes
VPN - connections 8
Protocol-tunnel-VPN IPSec
Split-tunnel-policy tunnelspecified
Split-tunnel-network-list value split tunnel
kunchevrolet value by default-field
test P4ttSyrm33SV8TYp encrypted password username
username kunauto password bSHrKTGl8PUbvus / encrypted privilege 15
username kunauto attributes
Strategy Group-VPN-kun
Protocol-tunnel-VPN IPSec
tunnel-group vpngroup type remote access
tunnel-group vpngroup General attributes
address pool VPN_Users
Group Policy - by default-kun
tunnel-group vpngroup webvpn-attributes
the vpngroup group alias activation
vpngroup group tunnel ipsec-attributes
pre-shared key *.
type tunnel-group test remote access
tunnel-group x.x.x.x type ipsec-l2l
tunnel-group ipsec-attributes x.x.x.x
pre-shared key *.
!
class-map inspection_default
match default-inspection-traffic
!
!
type of policy-card inspect dns preset_dns_map
parameters
maximum message length automatic of customer
message-length maximum 512
Policy-map global_policy
class inspection_default
inspect the preset_dns_map dns
inspect the ftp
inspect h323 h225
inspect the h323 ras
Review the ip options
inspect the netbios
inspect the rsh
inspect the rtsp
inspect the skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect the tftp
inspect the sip
inspect xdmcp
inspect the icmp
!
global service-policy global_policy
context of prompt hostname
call-home
Profile of CiscoTAC-1
no active account
http https://tools.cisco.com/its/service/oddce/services/DDCEService destination address
email address of destination [email protected] / * /
destination-mode http transport
Subscribe to alert-group diagnosis
Subscribe to alert-group environment
Subscribe to alert-group monthly periodic inventory
monthly periodicals to subscribe to alert-group configuration
daily periodic subscribe to alert-group telemetry
Cryptochecksum:0d2497e1280e41ab3875e77c6b184cf8
: end
kunauto #.Hello
Looking at the configuration, there is an access list this nat exemption: -.
192.168.215.0 IP Access-list extended sheep 255.255.255.0 allow 192.168.2.0 255.255.255.0
But it is not applied in the States of nat.
Send the following command to the nat exemption to apply: -.
NAT (inside) 0 access-list sheep
Kind regards
Dinesh Moudgil
P.S. Please mark this message as 'Responded' If you find this information useful so that it brings goodness to other users of the community
-
Installation of site to site VPN IPSec using PIX and ASA
/ * Style definitions * / table. MsoNormalTable {mso-style-name : « Table Normal » ; mso-tstyle-rowband-taille : 0 ; mso-tstyle-colband-taille : 0 ; mso-style-noshow:yes ; mso-style-priorité : 99 ; mso-style-qformat:yes ; mso-style-parent : » « ;" mso-rembourrage-alt : 0 à 5.4pt 0 à 5.4pt ; mso-para-margin : 0 ; mso-para-marge-bottom : .0001pt ; mso-pagination : widow-orphelin ; police-taille : 11.0pt ; famille de police : « Calibri », « sans-serif » ; mso-ascii-font-family : Calibri ; mso-ascii-theme-font : minor-latin ; mso-fareast-font-family : « Times New Roman » ; mso-fareast-theme-font : minor-fareast ; mso-hansi-font-family : Calibri ; mso-hansi-theme-font : minor-latin ; mso-bidi-font-family : « Times New Roman » ; mso-bidi-theme-font : minor-bidi ;}
I am a site configuration to site IPSec VPN using a PIX515E to site A and ASA5520 to Site B.
I have attached the lab diagram. Consider PIX and ASA are in default configuration, which means that nothing is configured on both devices.
According to the scheme
ASA5520
External interface is the level of security 11.11.10.1/248 0
The inside interface is 172.16.9.2/24 security level 100
Default route is 0.0.0.0 0.0.0.0 11.11.10.2 1
PIX515E
External interface is the level of security 123.123.10.2/248 0
The inside interface is 172.16.10.1/24 security level 100
Default route is 0.0.0.0 0.0.0.0 123.123.10.1 1
/ * Style definitions * / table. MsoNormalTable {mso-style-name : « Table Normal » ; mso-tstyle-rowband-taille : 0 ; mso-tstyle-colband-taille : 0 ; mso-style-noshow:yes ; mso-style-priorité : 99 ; mso-style-qformat:yes ; mso-style-parent : » « ;" mso-rembourrage-alt : 0 à 5.4pt 0 à 5.4pt ; mso-para-margin : 0 ; mso-para-marge-bottom : .0001pt ; mso-pagination : widow-orphelin ; police-taille : 11.0pt ; famille de police : « Calibri », « sans-serif » ; mso-ascii-font-family : Calibri ; mso-ascii-theme-font : minor-latin ; mso-fareast-font-family : « Times New Roman » ; mso-fareast-theme-font : minor-fareast ; mso-hansi-font-family : Calibri ; mso-hansi-theme-font : minor-latin ; mso-bidi-font-family : « Times New Roman » ; mso-bidi-theme-font : minor-bidi ;}
Could someone tell me how to set up this configuration? I tried but didn't workout. Here is the IKE protocol I have used.
IKE information:
IKE Encrytion OF
MD5 authentication method
Diffie Helman Group 2
Failure to life
IPSEC information:
IPsec encryption OF
MD5 authentication method
Failure to life
Please enter the following command
on asa
Sysopt connection permit VPN
on pix not sure of the syntax, I think it is
Permitted connection ipsec sysopt
What we are trying to do here is basically allowing vpn opening ports
Alternatively you can open udp 500 and esp (or port ip 50) out to in on the two firewalls
-
CSA with the Client VPN and remote access
Hello world!
I have the folowing isue: I have to tune in to the CSA for a clinet it connects remote with VPN Client only. He should not be able to connect to any other network or lan or dial-up.
No idea what the policy should change or tune?
Thank you
You can create an access network rule that depends on a State of the system. The State of the system can be defined to have a game of skill, which belongs to the range of VPN and the network access rule would declare that the client computer cannot act as a server on UDP/TCP ports when the State of the system is ensured.
So, if the laptop is not connected to the VPN, it would not be able to act as a server for connections to all and will be locked out. You will need to create an exception for the IP address of the VPN server to your corporate offices and allow the CSA client opening these ports.
-
VPN inside a PIX (General Questions)
Hello
I'm trying to implement a scenario of communication between a customer inside a pix that talks to a server on the outside. The customer must have an ipsec inside connection. I have the following config and a few questions I´d be very happy to get an answer for...
Backup on the interface outside the security0 Server
Client safety within 100 interface
The client IP address is 200.200.212.194
backup server address is 200.200.202.201
I want to implement a VPN client connection to the inside interface, and therfore have implemented the following configuration.
external IP 200.200.202.200 255.255.255.0
IP address inside 200.200.212.193 255.255.255.192
access-list 100 permit host 200.200.202.201 ip 10.3.3.0 255.255.255.0
IP local pool privada 10.3.3.1 - 10.3.3.254
Crypto ipsec transform-set esp-3des esp-sha-hmac RIGHT
Crypto-map dynamic dynmap 10 transform-set RIGHT
map mymap 10-isakmp ipsec crypto dynamic dynmap
client configuration address map mymap crypto initiate
client configuration address map mymap crypto answer
mymap map crypto inside interface
ISAKMP allows inside
ISAKMP key * address 0.0.0.0 netmask 0.0.0.0
ISAKMP identity address
part of pre authentication ISAKMP policy 10
ISAKMP policy 10 3des encryption
ISAKMP policy 10 sha hash
10 2 ISAKMP policy group
ISAKMP life duration strategy 10 86400
vpngroup address private pool PRIVADAGROUP
PRIVADAGROUP vpngroup password *.
vpngroup split tunnel 100 PRIVADAGROUP
I have a few questions about this configuration maybe some kind soul able to respond.
1. the VPN clients receive an address (10.3.3.1) for example through the IKE negotiation. When I ping my server from the client with the active VPN tunnel I assume the real package that passes through the wire has 10.3.3.1 a source address and a destination of 200.200.212.193 (endpoint the VPN and inside interface). Within IPSEC, the package is my real ip with a source 200.200.212.194 address (address of the real client) and a destination address of 200.200.202.201 (address of the backup server that I am trying to ping). If all this makes sense and is correct could you confirm the following point.
2 when the PIX deencrypts the package and removes the IPSEC header I find myself with my IP packet of origin with a source 200.200.212.194 address (address of the real client) and a destination address of 200.200.202.201 (address of the backup server that I am trying to ping). I don't know if I need then the following configuration to allow the package to be transferred to the backup without NAT server:
access-list allowed sheep host ip 200.200.212.194 255.255.255.0 200.200.202.0 255.255.255.0
NAT (inside) 0 access-list sheep
I was previously using the following configuration and it seemed to work but the more I think the less sense it seems to do as I´d wait for the SENATE to run on the dencypted package. I must be missing something or confused, or both.
IP 10.3.3.0 allow Access-list sheep 255.255.255.0 200.200.202.0 255.255.255.0
NAT (inside) 0 access-list sheep
3. as a last and probably least I m pretty sure I don't have to line "isakmp key * address 0.0.0.0 netmask 0.0.0.0" when connecting with a VPN client software only. Somone can confirm that for me.
I'm actually trying to get this to work remotely with someone else doing the actual work and we don't speak the same language.
Any help to store my confused brain would be appreciated.
1. No, it's the other way around. The real package that passes through the wire has the address IP of the PC (200.200.212.194) as a source. Within the IPSec packet is allocated 10.3.3.1 as source IP address. When the PIX decrypts the packet, the outer header is removed, and the package has a source of 10.3.3.1 as it is sent to your server on the outside. The external server will respond to 10.3.3.1 so it must be routed to the PIX for her to work.
Think of this as the normal instance with the PC to the outside through the Internet. A package from of and sent to 10.3.3.1 would never do to the original PC. The encrypted IPSec packet always contains the VPN endpoints real IP source and destination addresses. The decrypted original deck contains allocated as source IP and the actual destination as destination (usually also a private address) computer.
2. This should make more sense now that you know the answer to 1.
3. you don't need that if you have a "vpngroup password xxxx" command. This command «isakmp key...» "If there is no specific vpngroup key, or someone connects with a different groupname.
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