2 VPN remote sites can communicate by tunnel via a mutual 3' rd PIX?
Hello
I have a client who has a PIX 515E in the P.C. of the company and s 2 PIX 501 at remote sites. As of today the distance 2 PIX have a VPN connection from site to site with the HQ PIX.
My question is... is - it possible to have the HQ PIX act as a virtual private network 'hub' for remote to communicate across sites? I mean, it is, is it possible to configure the PIX so that traffic to the site remote B can go into the tunnel at HQ, and then through the tunnel to the remote B site?
If this is possible, how? The HQ PIX would have enough information to route packets in the proper way? What should I do?
Thank you in advance to those who will answer. :-)
If the question is not too clear, please post here and tell me...
Steffen
Steffen,
Unfortunately, the answer to that is no the PIX not "redirect" return packages the same interface, where they were received. This is normal and is part of the security on the PIX algorithm. The VPN 3000 and IOS will do this, but not the PIX.
However, as a workaround, can not only create another tunnel on the 2 rays to another? In other words, Setup a 'triangle' of sorts. That's usually what we suggest in situations like this.
I hope this helps.
Scott
Tags: Cisco Security
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Is there someone who can help me with the right settings this redirection via VPN?
the remote site config file:
/ * Style definitions * / table. MsoNormalTable {mso-style-name : « Tableau 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 cm 5.4pt cm 0 5.4pt ; mso-para-marge-haut : 0 cm ; mso-para-marge-droit : 0 cm ; mso-para-marge-bas : 10.0pt ; mso-para-marge-gauche : 0 cm ; ligne-hauteur : 115 % ; 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-hansi-font-family : Calibri ; mso-hansi-theme-font : minor-latin ;}
crypto ISAKMP policy 8
BA 3des
md5 hash
preshared authentication
ISAKMP crypto key dgsn2010 address 41.223.X.X
!
!
Crypto ipsec transform-set esp-3des vpn
!
vpndgsn 10 ipsec-isakmp crypto map
Description at HQ
set of peer 41.223.X.X
Set transform-set vpn
match address VPNHQ
!
interface FastEthernet0
IP 41.223.X.X 255.255.255.0
NAT outside IP
IP virtual-reassembly
IP tcp adjust-mss 1300
automatic duplex
automatic speed
vpndgsn card crypto
!
interface FastEthernet 4
192.168.11.1 IP address 255.255.255.0
IP nat inside
no ip virtual-reassembly
!
IP route 0.0.0.0 0.0.0.0 41.223.X.X
VPNHQ extended IP access list
ip licensing 192.168.11.0 0.0.0.255 any
!
the main site config file:
/ * Style definitions * / table. MsoNormalTable {mso-style-name : « Tableau 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 cm 5.4pt cm 0 5.4pt ; mso-para-marge-haut : 0 cm ; mso-para-marge-droit : 0 cm ; mso-para-marge-bas : 10.0pt ; mso-para-marge-gauche : 0 cm ; ligne-hauteur : 115 % ; 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-hansi-font-family : Calibri ; mso-hansi-theme-font : minor-latin ;}
crypto ISAKMP policy 10
BA 3des
md5 hash
preshared authentication
ISAKMP crypto key dgsn2010 address 41.223.X.X
!
!
Crypto ipsec transform-set esp-3des vpn
!
vpncreo 10 ipsec-isakmp crypto map
Description FOR bastos
set of peer 41.205.X.X
Set transform-set vpn
match address 110
!
interface FastEthernet0/0
Description OF WAN
IP 41.223.X.X 255.255.255.240
NAT outside IP
IP tcp adjust-mss 1492
vpncreo card crypto
!
interface FastEthernet0/1
Description OF LAN
IP 192.168.10.1 255.255.255.0
IP nat inside
automatic duplex
automatic speed
!
overload of IP nat inside source list NAT interface FastEthernet0/0
IP route 0.0.0.0 0.0.0.0 41.223.31.241
access-list 110 permit ip any 192.168.11.0 0.0.0.255
NAT extended IP access list
deny ip 192.168.10.0 0.0.0.255 192.168.11.0 0.0.0.255 any
permit ip 192.168.10.0 0.0.0.255 any
ip licensing 192.168.11.0 0.0.0.255 any
!
You must configure the routing policy based closure for NAT can be invoked on the main site.
Here is an example configuration for your reference:
Additionally, make sure that you don't do any NATing at your remote end, IE: you must configure the NAT exemption for all traffic from 192.168.11.0/24 to any (Internet).
Hope that helps.
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Crossed between the remote access client to a remote site at a Site in Tunnel
Here's the scenario: users access remote vpn in ASA5510 with the tunneling split. The ASA has a tunnel from one site to another site. Vpn remote access users must be able to come and then go back devices on this tunnel from site to site. Is it still possible? Most of what I see on crossed is internet access when not to use the tunneling split.
Thank you!
You can do this job. First of all, you should make sure that the command "permit same-security-traffic intra-interface" is configured. You will then want to update your remote access ACL to include accessible subnets via the split tunneling L2L tunnel. In this way, customers will receive a static route routing traffic through the tunnel for remote access. The ACL crypto for the L2L tunnel shall include either a specific or analytical entry to the pool of the VPN client to destination subnets. The corresponding crypto ACL on the far side of the tunnel L2L will need to be updated with a mirror reverse configuration of hub. Finally, if you have configured on the NAT ASA, you will need to include a rule of exemption for the pool of VPN client-> remote subnet traffic flow.
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