Newbie: Cisco 851w and nat

Hello,
I am a network administrator and recently decided to upgrade my existing network infrastucture at my small office by purchasing a
Cisco 851w router.
I have 14 computers that need internet connection sharing and an Ubuntu 6.06 box running e-mail services, web and dns hosting for
my domain (master zone, running bind9).
Using SDM express I configured the network in 15 minutes, and also NAT for the Linux server. Everything is fine, except one
thing: when I access my domain (let`s say mydomain.ro) from my local network I don`t get my webpage or a response from the mail
server, but instead my SDM express login window. From an outside network I can access my mail and web page using mail.mydomain.ro
and www.mydomain.ro. Internally I get a response from the router.
This is how I configured the network with SDM express:
192.168.0.1 as my routers ip address and network address, dhcp enabled, router`s name is router and domain "domain.ro". At the
dhcp section I typed my ISP`s dns server. The linux box has the ip 192.168.0.10 and runs bind9 for the "domain.ro" as the master
server. I added the following NAT with SDM: 53 tcp and udp from WAN ip (81.xxx.xxx.xxx) to 192.168.0.10, 22 tcp, 25 tcp, 80 tcp,
etc. WAN IP is the ip from my ISP (81.xxx.xxx.xxx).
Can I fix this using SDM, and how? It`s not an option to type 192.168.0.10 as incoming mail server instead of mail.domain.ro. I don`t know how to use CLI, I bought this router just to be able to run away from my old 486 iptables machine. :D
Thanks for you time!

You are absolutly right in that you are not the only one with this problem.
Check this post and the link provided by Sundar out.
http://forum.cisco.com/eforum/servlet/NetProf;jsessionid=968333ACF23358AC6443CE3DC4C19CD9.SJ3B?page=netprof&forum=Network%20Infrastructure&topic=WAN%2C%20Routing%20and%20Switching&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1ddccf83
And hopefully you will find a working solution.

Similar Messages

Cisco 851W and VLANS

Hello,
I have a Cisco 851W router and I'm having this configuration:
All LAN ports and dot11Radio are bridged.
So now I'm trying to do this thing:
I'm trying to create a wireless guest net .
So i've created a bridging vlan 1 native that is for my current trusted ssid and another routing vlan an ssid that is for my guest net .
The problem is that when i create vlan 1 it locks me out: i can connect to the wireless but i cant access nothing on the router (FastEthernet 0-4)
Any solutions ? Thanks

Thanks's for the response . I will try , but now
i've discovered another problem that may cause this one
Here is the link :
http://forums.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=General&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1dde0f45
I will attach the running config , but i deleted any encrypted hashs and public ip's
(this is a public forum after all}

Cisco 851W - Internal WLAN and Guest WLAN

I have a Cisco 851W Router, which has an IPSEC Tunnel back to my corporate office.
I want to configure 2 WLANS, one for my internal network (vlan 1) which will have access to my corporate network, and one for guests which will just be for outbound internet access (http, https, ftp, sftp, etc ..).
I have not been able to find any Cisco Documentation with how to accomplish. Can someone inform me where I can find this or supply me with some configuration examples?

create 2 ip dhcp pools on the router for the 2 types of clients
create wlan for each type of client
I'm assuming a wlc is involved, then hreap and allow both vlans, procedure will be slightly different for standalone
acl by address to ban traffic from ipsec tunnel- easier on a WLC interface than on the router, no wlc then on the router
bob

Cisco 1841 with 2 public WAN IP's and NAT

OK currently the network is setup as follows:
Zyxel SHDSL Router --> Linksys Router --> 10/100 Switch --> PC's
x.x.x.145/28__________x.x.x.146/28____________________192.168.1.0/24
The Linksys router is running inbound one-to-many PAT (eg. x.x.x.146:80 --> 192.168.1.10:8080)
I'm looking to replace the setup with a Cisco 1841 router. Now normally I would configure the DSL interface as unnumbered to the internal LAN interface and use my public IP addys on this segment then passing through a PIX to NAT into private IP addys.
The problem I have is I want the 1841 to be an all in one box performing DSL, Firewall and NAT functions.
Now I thought I would configure the DSL as unnumbered to FastEthernet0/0 adding a secondary IP address of x.x.x.146/28. Interface configured as NAT outside.
Interface FastEthernet0/1 was configured with 192.168.1.1/24 with NAT inside and connected to the switch.
The problem was is that the FastEthernet0/0 interface line protocol was down as there was no need to connect it to anything.
I then tried assigning the dialer interface a static IP of x.x.x.145/28 and x.x.x.146/28 as a secondary IP running NAT outside. I tried again but during boot up the router said you cant assign a secondary IP to the dialer interface.
So my question is, how would you recommend setting up the interfaces to enable the router to have both x.x.x.145 and 146/28 as public IP's and NAT x.x.x.146:80 to 192.168.1.10:8080?
Any help much appreciated.

Answers:
1) DSL is terminating in the 1841 on a SHDSL WIC
2) No
3) IP is negotiated
4) Below is a config which I believe should work. Any recommended amendments?
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
hostname trackgw
boot-start-marker
boot-end-marker
no aaa new-model
resource policy
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
no ip dhcp use vrf connected
username cisco privilege 15 secret xxx
controller DSL 0/0/0
mode atm
line-term cpe
dsl-mode SHDSL symmetric annex B
line-rate AUTO
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
ip nat inside
duplex auto
speed auto
interface FastEthernet0/1
no ip address
duplex auto
speed auto
interface ATM0/0/0
no atm ilmi-keepalive
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
interface Dialer1
ip address negotiated
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
no cdp enable
encapsulation ppp
no cdp enable
ppp authentication chap callin
ppp chap hostname username
ppp chap password 0 password
ppp ipcp dns request
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip http server
ip http authentication local
ip nat inside source list nat-acl interface Dialer1 overload
ip nat inside source static tcp 192.168.1.10 8080 x.x.x.146 80
ip access-list extended nat-acl
permit ip 192.168.1.0 0.0.0.255 any
dialer-list 1 protocol ip permit
no cdp run
control-plane
line con 0
logging synchronous
login local
transport output all
line aux 0
transport output all
line vty 0 4
privilege level 15
login local
transport input telnet
scheduler max-task-time 5000
end

Cisco ASA Site to Site IPSEC VPN and NAT question

Hi Folks,
I have a question regarding both Site to Site IPSEC VPN and NAT. Basically what I want to achieve is to do the following:
ASA2 is at HQ and ASA1 is a remote site. I have no problem setting up a static static Site to Site IPSEC VPN between sites. Hosts residing at 10.1.0.0/16 are able to communicate with hosts at 192.168.1.0/24, but what i want is to setup NAT with IPSEC VPN so that host at 10.1.0.0/16 will communicate with hosts at 192.168.1.0/24 with translated addresses
Just an example:
Host N2 (10.1.0.1/16) will communicate with host N1 192.168.1.5 with destination lets say 10.23.1.5 not 192.168.1.5 (Notice the last octet should be the same in this case .5)
The same translation for the rest of the communication (Host N2 pings host N3 destination ip 10.23.1.6 not 192.168.1.6. again last octet is the same)
It sounds a bit confusing for me but i have seen this type of setup before when I worked for managed service provider where we had connection to our clients (Site to Site Ipsec VPN with NAT, not sure how it was setup)
Basically we were communicating with client hosts over site to site VPN but their real addresses were hidden and we were using translated address as mentioned above 10.23.1.0/24 instead of (real) 192.168.1.0/24, last octet should be the same.
Appreciate if someone can shed some light on it.

Hi,
Ok so were going with the older NAT configuration format
To me it seems you could do the following:
Configure the ASA1 with Static Policy NAT
access-list L2LVPN-POLICYNAT permit ip 192.168.1.0 255.255.255.0 10.1.0.0 255.255.0.0
static (inside,outside) 10.23.1.0 access-list L2LVPN-POLICYNAT
Because the above is a Static Policy NAT it means that the translation will only be done when the destination network is 10.1.0.0/16
If you for example have a basic PAT configuration for inside -> outside traffic, the above NAT configuration and the actual PAT configuration wont interfere with eachother
On ASA2 side you can normally configure NAT0 / NAT Exemption for the 10.1.0.0/16 network
access-list INSIDE-NONAT remark L2LVPN NONAT
access-list INSIDE-NONAT permit ip 10.1.0.0 255.255.0.0 10.23.1.0 255.255.255.0
nat (inside) 0 access-list INSIDE-NONAT
You will have to take into consideration that your access-list defining the L2L-VPN encrypted traffic must reflect the new NAT network
ASA1: access-list L2LVPN-ENCRYPTIONDOMAIN permit ip 10.23.1.0 255.255.255.0 10.1.0.0 255.255.0.0
ASA2: access-list L2LVPN-ENCRYPTIONDOMAIN permit ip 10.1.0.0 255.255.0.0 10.23.1.0 255.255.255.0
I could test this setup tomorrow at work but let me know if it works out.
Please rate if it was helpful
- Jouni

ASA5505 SOHO public ip range and nat head ache

Hello
Can anyone shed some ligh on a problem im having. We have setup a ASA 5505 with an ISP called Zen that allocates you a subnet of public ip addresses. i have sucessfully setup the asa to access the internet using nat on the outside interface. we would like to use the other ip addresses in the range for other services but i cannot think how i can do this/configure this.
LAN > ASA5505 > VDSL Modem > ISP
the range they have given us is
Number of IP addresses: 8
IP addresses: XX.XX.XXX.40 - XX.XX.XXX.47
Subnet mask: 255.255.255.248
Subnet in slash notation: XX.XX.XXX.40 /29
Network address: XX.XX.XXX.40
XX.XX.XXX.41
XX.XX.XXX.42
XX.XX.XXX.43
XX.XX.XXX.44
XX.XX.XXX.45
XX.XX.XXX.46 Router
Broadcast address: XX.XX.XXX.47
Router address: XX.XX.XXX.46
i have setup XX.XX.XXX.46 on the otside interface and hosts inside can access the net and nat from the internet to internal devices all work.
we have a vdsl modem connected to the outside interface and using PPPoE we dynamically get the XX.XX.XXX.46/32 address.
Is there any way i can use the other spare addresses? i do see how i can use them. i have done a lot of browsing and the only way i see that other people have been able to do this is using a layer3 device and using ip unnumber of the external int point to a loopback,
any info or advice would be gratefully received.
regards
C.

Hello
the version is Cisco Adaptive Security Appliance Software Version 9.2(2)4
debugging icmp i see pings to the .46 address however i see no pings/traffic received on the asa for the other addresses. how does zen know to route the xx.xx.xx.41 to .45 ip addresses to the firewall using the .46 address?
the nat rules i have are
nat (Vlan200_Int,Outside_Dirty_Int) dynamic interface < this works for lan access to the internet
nat (Vlan200_Int,Outside_Dirty_Int) static xx.xx.xx.45 no-proxy-arp service tcp www 65100
nat (Vlan200_Int,Outside_Dirty_Int) static xx.xx.xx.45 no-proxy-arp service tcp https 65101
access-list Outside_Dirty_Network_access_in extended permit tcp object Click_PC object ESXi object-group DM_INLINE_TCP_7
object-group service DM_INLINE_TCP_7 tcp
port-object eq 902
port-object eq www
port-object eq https
thanks for the help

Internal DNS server and NAT routing issue.

Hi -- I am not terribly experienced with DNS and I am running into an issue that I can't seem to resolve. My company.com DNS information is hosted by an outside ISP for email, web, etc... but I have configured an A record there to point to the public IP to my mac os x server (server.company.com).
We have a cisco router configured with one to one NAT from the public IP to the internal IP for our server in a 192.168.15.x subnet. The same router is running DHCP and and NAT on that subnet under a different public IP provided by our ISP.
Our server is running DNS with recursion and has a "company.private" zone set up for internal services and machine names. Thus, the server is accessible via "server.company.com" from the outside and "server.company.private" from the private LAN.
The problem is that I would like to be able to access some services simply via "server.company.com" both inside and outside the private network. Now, accessing the "server.company.com" services from the private lan does not work because the name resolves to the external IP and the external IP cannot be used internally due to NAT.
Is there a way to configure my internal DNS server to respond with the appropriate private address when receiving a query only to "server.company.com" and forward requests on for anything else on "company.com"?
I know that I could manually duplicate all entries for our domain from my ISP and host the same entries for internal clients, but it would be much easier to only have our server handle requests for itself. The server is running OS X Server 10.4.11.
Thanks

Is there a way to configure my internal DNS server to respond with the appropriate private address when receiving a query only to "server.company.com" and forward requests on for anything else on "company.com"?
Ordinarily, no. Once your server thinks it is responsible for a zone (e.g. company.com) then it will answer all queries for that domain and never pass them upstream. Therefore you'd have to replicate all the zone data, including all the public records, and maintain them both.
The one possible exception to this (I haven't tried) is to create a zone for server.company.com that has your internal address. In theory (like I said, I haven't tried this), the server should respond to 'server.company.com' lookups with its own zone data and defer all other lookups (including other company.com names since they're not in a zone it controls). Might be worth trying.

How to configure one dsl connection and one public ip in cisco router and map to one interface for using exchange server

how to configure one dsl connection and one public ip in cisco router and map to one interface for using exchange server

Hi ,
Have you got any additional public IP Address from your service provider , If yes on router you can have static route for those additional IP Address pointing to your ASA outside interface .
Accordingly you can configure NAT
HTH
Sandy .

Urgent!!! Cisco ACE and asymetric routing assistance needed

I am wondering if someone can give me pointers on the cisco ACE
and asymetric routes. I've attached the diagram:
-Cisco IOS IP address is 192.168.15.4/24 and 4.1.1.4/24
-Firewall External interface is 192.168.15.1/24,
-Firewall Internal interface is 192.168.192.1/24,
-F5_BigIP External interface is 192.168.192.4/24,
-F5_BigIP Internal interface is 192.168.196.1/24 and 192.168.197.1/24,
-host_y has IP addresses of 192.168.196.10/24 and 192.168.197.10/24,
-Checkpoint has static route for 192.168.196.0/24 and 192.168.197.0/24
pointing to the F5_BigIP,
-host_y is dual-home to both VLAN_A and VLAN_B with the default
gateway on host_y pointing to VLAN_A which is 192.168.196.1,
-host_x CAN ssh/telnet/http/https to both of host_y IP addresses
of 192.168.196.10 and 192.168.197.10.
In other words, from host_x, when I try to connect to host_y
via IP address of 192.168.197.10, the traffics will go through VLAN_B
but the return traffics will go through VLAN_A. Everything
is working perfectly for me so far.
Now customer just replaces the F5_BigIP with Cisco ACE. Now,
I could not get it to work with Asymetric route with Cisco ACE. In
other words, from host_x, I can no longer ssh or telnet to host_y
via IP address of 192.168.197.10.
Anyone knows how to get asymetric route to work on Cisco ACE?
Thanks in advance.

That won't work because ACE uses the vlan id to distinguish between flows.
So when the response comes back on a different vlan, ACE can't find the flow it belongs to and it drops it.
Even if we could force it to accept the packet, ACE would then try to create a new flow for this packet and it will collide with the flow already existing on the frontend.
You would need to force your host to respond on the same vlan the traffic came in.
This could be done with client nat on ACE using different nat pool.
Gilles.

Cisco 871w and LAN (What did I get myself Into!)

Hey all,
Little background info:
- Took the CCNA1-4 via college course about 3 years ago, haven't used the knowlege since
- most of my experience in the real world has been non-managed networks, but taking care of Windows Terminal Servers.
- basically I think I need to re-educate myself
Current Network:
Windows Domain
45 workstations
4 buildings
Breakdown
Head Office:
- Main Distribution point
- WAN: Cisco Router and DSL modem owned by provider
- Firewall: WatchGuard Firewall (/w 5 VPN connections)
- 1 x 48 port Managed Switch (acting as simple switch)
- Windows SBS 2003 server with Exchange, SQL, and using VPN here as well
- We have about 6 other switches that are not managed in the build
- 1 cable run through building. At the end of this building is a fiber connection to the next building
- 15 workstations
BUilding 2:
- Fiber connection from Head Office
- 1 single CAT 5e from Fiber switch to Unmanaged Switch (Switch 1)
- 1 single CAT 5e from unamanaged switch to half-way point of building where we have another unmanaged switch (Switch 2)
- 1 single CAT 5e from from Switch 1 to another small building (building 4) with a small unmanaged switch and 2 workstations
- 1 single CAT 5e from Switch 2 - to end of building, underground to building 3
- 1 Workstation attached to Switch 2
Building 3:
1 x 24 port Managed Switch with connection from Building 2 (this switch being used as a normal switch)
25 workstations in here, various distances with small workstation switches throughout.
Working with new equipment:
- we upgraded DSL (cheaper) to a 5 Static IP package, this is a seperate circuit for now - so I can configure everything and
not disrupt current services.
- using test PC and connection on this DSL to make sure most everything is working.
- Purchased 871w to replace their router and to replace our Firewall which has a faulty nic and is limited in functionality.
- 6 months from now, adding Fortigate 100A Appliance
- over next 2 years - all switches will be managed
First question: Anyone have a real good resource on how inside local, inside global, outside local, outside global works for ACL's? Isn't there something similar for NAT/PAT?
Second Question: Just looking for some best practice solutions. Should I bother with VLAN's at this time, just leave everything on VLAN since
there can be no real seperation throughout the company. Suggestions?
Outside Services required:
- Webmail - using OWA:
- host header: webmail.companyname.com
- can the router block all requests to this that are made via port 80 and allow the HTTPS ones through?
- since i have 5 statics, using NAT can I have one of the external IP's used for webmail... this can be done using static NAT and firewall rules?
- Exchange Server forwards all SMTP requests to ISP mail server.
- No RDP directly to network resources without vpn activity - taken care of implicet deny.
- Will it be possible to use my other 4 static IP's, say I create a DNS entry for ftp.companyname.com. I assume a static entry in NAT will take care of sending all requests to another network box.
VPN:
Will require VPN connections, there seems to be a ton of different ones. What is the easiest to create for a few home systems
that the VPN client can be installed and configured? Can this be managed with a push policy, can different user accounts be
created with different policies:
i.e: * Steve logs in via VPN, can RDP to a desktop to access server resources but I don't want him to be able to connect to \\serverip\share
* Bob is a user, bob currently vpn's and obtains an IP 10.0.0.249, bob shares a printer that we use to print to. I don't want bob to be able to access any other resources on our network, but users can print to Bob's remote printer.
I'm over thinking all this, and getting confused - a nice simple step approach required - I feel like I'm drowning -lol

try the following links
inter vlan
http://www.cisco.com/en/US/products/hw/switches/ps672/products_configuration_example09186a00800941b4.shtml
NAT
http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a0080881718.shtml
how NAT works
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094831.shtml
VPN
http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a0080235197.shtml
useful vpn links
http://www.cisco.com/en/US/products/sw/secursw/ps2308/prod_configuration_examples_list.html
good luck
Please, if helpful Rate

Cisco 831 and "Can't get video from the camera."

I'm running a Cisco 831 router with ios 12.4(5a) installed. Every time I try to initiate a video chat with a computer going through the router, I get the "Can't get video..." error. It works fine with computers on my internal network and if I bypass the Cisco router and plug straight into my Cable modem.
I've covered every conceivable TCP/UDP port being open (per numerous pages re: port 5060, 5190, etc.) and have even gone as far as testing with "permit UDP any any" and "permit TCP any any" at the top of the rules. No luck.
I've been reading about the possibly needing to "unbind" SIP (port 5060). Is this something that a Cisco 831 router would require? The router doesn't seem to respond to any of the documented Cisco command re: VoIP and does not have any phone support that I'm aware of.
If anyone has any info that can help me get his up-and-running, I'd be much obliged.
Thanks,
Matheau

Hi Kcritchie,
It will most likely look like that. But in this case it should be on the UDP protocol.
The link looks useful (it takes a scroll down to see it for others looking)
If I do nat bindlist in my Alcatel I get this
Last login: Thu Jun 29 12:36:20 on console
Welcome to Darwin!
Ralph-G4:~ Ralph$ telnet 10.0.0.138
Trying 10.0.0.138...
Connected to speedtouch.johnshome.
Escape character is '^]'.
Username :
(Pic line drawing edited out here )
=>nat bindlist
Application Proto Port
ESP esp 1
FTP tcp 21
GRE gre 1
H323 tcp 1720
IKE udp 500
ILS tcp 389
ILS tcp 1002
IP6TO4 6to4 1
IRC tcp 6660-6670
JABBER tcp 5222
JABBER tcp 15222
PPTP tcp 1723
RAUDIO(PNA) tcp 7070
RTSP tcp 554
=>
On my device this is because the SIP binding on UDP port 5060 is unbound.
2:30 PM Thursday; June 29, 2006

Cisco 851W Problems

I am having problems connecting some HTC smartphone devices to a CISCO 851W router. The devices receive the SSID but when we try to connect to the router they can't. The router works well for other devices (latops, PDAs) and the smartphones have worked well with a Linksys router, so the problem is specific to this the conncetion between this router and this devices.
Any help about this is welcomed.

What parameters are you using? (WEP / WPA {TKIP | AES}) etc ...
My 8525 didn't work well using AES. TKIP was OK.
It hardly worked at all with the factory / MS mobile drivers. I added Odyssey (now from Juniper ~US$35.00)and it connected nearly every time, and even worked with EAP-FAST.
Good Luck
Scott

CSS 11500 url path rewrite and NAT

Hi,
We are evaluating a CSS 11500 and try to configure url path rewrite and NAT, but we have some problems.
What we would like to do is the following:
http://www.example.com/path1 -> http://host1:80
http://www.example.com/path2 -> http://host1:8080
http://www.example.com/path3 -> http://host2:80
The address www.example.com is resolving to a valid internet address, whereas host1 and host2 resolves to private IP addresses.
The client should always see the external url (e.g. http://www.example.com/path1/...) and the CSS should do the necessary translation.
Any help would be very much appreciated!
Regards,
Harald

Hello Experts, I'm new with this cisco stuff too(just got it 3 weeks ago), but here is some of my experience with cisco css 11501.
First : Service ServerName, there is a port setting here, but from my experience, I think it is related with KeepAlive option, so, port is alternate way to know if the server alive or not.
Second : When you send request to cisco css, the port option in content port will be the cisco css port to accept request, so, if you send a request to http://vip:8080/, all service must be in the same port too to balance the request, in this case, port 8080, if one service port 80, i'm sure the css will not hit the server.
Third : To solve your problem...
http://www.example.com/path1 -> http://host1:80 (ipA)
http://www.example.com/path2 -> http://host1:80 (ipB)
http://www.example.com/path3 -> http://host2:80
if you are lazy to buy new nic, just set subinterface/ip alias on the host1, and make the webserver only bind to specific address, not to all interface...
O yea, about your path1/path2/path3 -> /, hmm, i'm still asking in this forum about path changing cause until now, i haven't know how to do this, i know about apache rewrite module, and success do this, if only i know about this in cisco css too :-(
I'm sorry if I make mistake, I'm just telling my experience...

Cisco ISA 550 NAT problem

Hi all,
I have bought a Cisco ISA 550 small business firewall and I had to face to a problem when I configure the NAT.
My scenario is,
I have a mail server in my LAN which is need to be access from both inside and outside
My lan network is 192.168.0.0/24
I have a PPPoE WAN connection with a static IP
Mail server IP 192.168.0.15/ 24
There is not a DMZ zone. I need to NAT this server to my WAN IP and that WAN IP is also used
to provide internet connection to other LAN users. I could do this with my previous ADSL
router and i tried to do this with firewall but couldn't acheive the task.
Hope a help from some expert.
Thanks,
Charith

Do you want that your internal clients connect to the WAN IP and get natted to the local LAN IP?
Then open the Maintain and Operate Guide at cisco.com and search for "hairpinning".
Michael
Please rate all helpful posts

Need help with troubleshooting VPN betwen Cisco 2911 and Dell Sonicwall 4060

Hello all,
I am trying to set up a VPN Tunnel between the devices mentioned above. The tunnel appears to be established, but I've encountered some issues along the way. I can ping from the Cisco 2911 to a server behind the Sonicwall, but I cannot ping from that server to the Cisco router unless the router is pinging the server at the same time. What should I do to fix this problem?
UPDATE: The tunnel is no longer working between the two devices. The end result I am looking for is to have a VPN tunnel between these two devices which does NAT and allows me to ping across without having to constantly ping to keep the session open. Before the tunnel went down, I was able to ping that server behind the sonicwall using a port on the inside of the firewall as a source port for the ping, and at one point I was able to ping back to the router from the server, but was unable to ping beyond that interface. I think the problem that I am running into has to do with the zone-based firewall configurations that are already on the router. I don't want to mess with those configurations already in place, but I am not sure how to get this tunnel working. I'm fairly certain I need to start from the beginning in regards to this tunnel, but I cannot figure out how to configure this the right way.
Thanks in advance for any help
Michael
Message was edited by: Michael Sotalin

Finally the testing is successful on Sonicwall NSA 240 as well with Cisco ASA. Actually somehow Sonicwall firewall was discovering my VPN Box's Public leg (Private IP (10.10.50.10)) as well, which was behind a Live Peer IP (203.124.x.x). As per security policies it shouldnt have been discovered on the remote end. i will bring this in Cisco TAC notice.
Logs of Sonicwall were showing ASA local ike id as "203.124.x.x" & ASA Remote ike id "10.10.50.10".
Sonicwall sets these two parameters with PSK (local ike id & remote ike id). This is other than setting the Peer IP. i asked my client to add my ASA actual and NAT IP in these two parameters and the VPN got UP.

Newbie: Cisco 851w and nat

Similar Messages

Maybe you are looking for