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from inside to inside in a pix515e

hi all i'm experiencing problem in a pix515e

client on inside are natted with a pool of public addresses on outside interface and all works fine but if i try to access inside client with their public address fron another client in inside network with his different pubblic address doesn't work ... idem from dmz to inside ... otherwise from inside to dmz all works fine ... from outside i can access anything

is there any special command to make this ?

thank you

23 Replies 23

1cmerchant
Level 1
Level 1

If I understand your question correctly, you want IP traffic to enter the Pix and then exit it using the same interface right? If so then the command 'same-security-traffic permit intra-interface' may solve your problem. This command permits communication in and out of the same interface, which is not enabled by default. The only caveat would be that the code must be at least at v7.0x as I don't believe this command existed in the v6.3(5) and previous code.

thank for your response ...

i've tried

pixfirewall(config)# same-security-traffic permit ?

configure mode commands/options:

inter-interface Permit communication between different interfaces with the

same security level

intra-interface Permit communication between VPN peers connected to the same

interface

pixfirewall(config)# same-security-traffic permit in

pixfirewall(config)# same-security-traffic permit inte

pixfirewall(config)# same-security-traffic permit inter-interface

pixfirewall(config)# same-security-traffic permit intra

pixfirewall(config)# same-security-traffic permit intra-interface

pixfirewall(config)#

but it doesn't work enough ! :(

Sorry this does not help your post, but I have the same issue.

Internal client trying to get to internal server via host name. The host name gets translated to the public address so it does not work. AHHHHH!

Anyone find any more on this?

Dave

So what I have figured out is this.

Using the same-security commands allows anyone on the same lan as the address that gets NAT'ed to get to the NAT'd address. Anyone not on that LAN cannot.

User A 10.7.7.20

Server 10.7.7.10=204.50.200.1=site.intweb.com

User B 10.6.6.20

User A can now get to http://site.intweb.com but user B cannot.

Anyone know what can be done here?

Dave

hi all, i've upgraded the ios in my pix but i can't arrive to the public natted address from inside interface ...

i've set same-security-traffic permit intra-interface command.

some ideas ?

this is my ver

pixfirewall# show version

Cisco PIX Security Appliance Software Version 8.0(2)

Device Manager Version 6.0(2)

thank you

Is the public address that you are trying to get to from the inside the public address of the PIX? If so, this will not work.

Can you post a bit of your config?

Dave

no isn't a interface nat but a nat with (nat and static command with pool) my config:

attach my config

thank you

Roberto,

Can you tell me, based on the config you uploaded, which address is try to access which address?

Cheers!

Dave

if i try to ping 151.13.20.200 (static nat of 10.1.3.77) from himself i not receive response... if i ping from my house's dsl line i receive response and i can access service ...

if i try to ping another host (ex. 151.13.20.10 from 151.13.20.200 or from 151.13.20.200 try to ping 151.13.20.10 ) from inside network or from any network inside natted host (pool 151.13.20.50-151.13.20 250) doesn't work ...

:(

i've found this

http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00807968c8.shtml

but i must nat all the ip of inside network not just only one or two

maybe a bug in cisco ios ? :P

I'm having the same problem running 7.0(2) on a PIX 515e. I have a second routed network inside my LAN. The PIX inside interface is the default gateway for the network. When a device on the routed network - 192.168.1.x - tries to access servers on the LAN - 192.168.50.x, the PIX drops the packets. I see it in the logs.

I've tried the same-interface commands but no good. Anyone found anything yet?

pengfang
Level 1
Level 1

Hi all,

Only PIX v7.2 or later supports "hairpinning" for unencrypted traffic,also you probably have to do NAT on the Inside interface. I just drew a diagram and wrote some code, but don't have PIX/ASA to test it, anybody could test the code,please post the result.

If it helps, please rate.

Thanks for the help. I had everything except the version. I'll upgrade and that should do it. Thanks again for the help.

I have two PIX's running in fail over mode with the below config and I still cannot get the hair pinning to work.

Again this is what I am trying to accomplish:

User A 10.7.7.20

Server 10.7.7.27=204.50.200.51=site.intweb.com

User B 10.7.4.20

User A can now get to http://site.intweb.com but user B cannot. User B cannot even ping the public address 204.50.200.51?

PIX-01# sh ver

Cisco PIX Security Appliance Software Version 7.2(3)

interface Ethernet0

nameif Outside

security-level 0

ip address 204.50.200.250 255.255.255.248 standby 204.50.200.251

!

interface Ethernet1

nameif inside

security-level 100

ip address 4.0.4.4 255.255.255.0 standby 4.0.4.5

!

access-list 101 extended permit ip any host 204.50.200.51

static (inside,Outside) 204.50.200.51 10.7.7.27 netmask 255.255.255.255 dns

global (Outside) 10 interface

global (inside) 10 interface

nat (inside) 10 0.0.0.0 0.0.0.0

nat (inside) 30 10.7.4.0 255.255.255.0

route inside 10.7.4.0 255.255.255.252 4.0.4.1 1

same-security-traffic permit intra-interface

Am I missing anything?

Dave

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