SCCP over NAT Question

I'm looking at this as a possibility... Ideas?
CallManager---> 2600GW W ADSL WIC ---> Internet ---> netgear router ----> IP Phone
The Callmanager is 10.0.0.1, iphone 192.168.10.1 both NAT.
Even possible? Thoughts?

Not all the firewalls allow skinny. Some like Linksys allows. Not sure about NAT, but IOS 12.3(15)T could have support for such configuration.

Similar Messages

I updated to Yosemite and now I can't open my YNAB finance app. There is a question mark in the Dock where the App should be and when I hover over the question mark it does say YNAB but I can't open it.

I updated to Yosemite and now I can't open my YNAB finance app. There is a question mark in the Dock where the App should be and when I hover over the question mark it does say YNAB but I can't open it. When I double click on the question mark nothing happens. Has the link to YNAB been broken with the update? Has this happened to anyone else?

Check the Application folder.
If it is not there, contact YNAB Finance for a OS X Yosemite compatible version of the application.
Best.

NATTing Question version 9.x

Hello,
I have two external ISP interfaces and need help with some nat questions.
I have a webserver that I wish to advertise out both interfaces.
The issue I'm having is exactly how to do it on the ASA with version 9.x code
ISP 1: 9.9.9.0
ISP 2: 8.8.8.0
object network webserver
host 7.7.7.7
nat (dmz,isp1) static 9.9.9.9
nat (dmz,isp2) static 8.8.8.8
I can't seem to get this working. I'm new to this code but the old code was so much easier with this....

Hi,
You wont be able to configure the Static NAT towards both ISP with a single NAT configuration. More specifically, you wont be able to configure 2 NAT statements under the same "object network"
You should configure it like this
object network WEBSERVER-ISP1
host 7.7.7.7
nat (dmz,isp1) static 9.9.9.9
object network WEBSERVER-ISP2
host 7.7.7.7
nat (dmz,isp2) static 8.8.8.8
If you want to read a bit about the new NAT format that was introduced from 8.3 onwards then you could have a look at a document I wrote here on the CSC
https://supportforums.cisco.com/docs/DOC-31116
Here is also another great document for someone that knows the old format but wants to know the corresponding new format
https://supportforums.cisco.com/docs/DOC-9129
I agree that the old NAT configuration format in some situations was a lot simpler and you potentially created a lot simpler configuration. In larger environments and more special setups I do think that the new NAT configuration format is far more simpler/safer to configure and provides more flexibility. There are some issues with it that I still dont have clear answer to but for the most part it seems to work just fine.
Hope this helps
- Jouni

JMS Issues over NAT IP in weblogc 10.3

Dear Tom B,
We have an issue in connecting to the JMS TOPIC's over NAT IP. Pls note the application has Applets/Swing and hence use Thin Client jars for communicating it with weblogic server. We are getting the following exception when we try to look up using the Natted IP.
Exception at MessagingServiceFactory :::weblogic.jms.common.JMSException: [JMSClientExceptions:055054]Error finding dispatcher: weblogic.messaging.dispatcher.DispatcherException: Could not register a DisconnectListener for [IOR: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] for treasury-1
weblogic.jms.common.JMSException: [JMSClientExceptions:055054]Error finding dispatcher: weblogic.messaging.dispatcher.DispatcherException: Could not register a DisconnectListener for [IOR: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] for treasury-1
at weblogic.jms.client.JMSConnectionFactory.setupJMSConnection(JMSConnectionFactory.java:266)
at weblogic.jms.client.JMSConnectionFactory.createConnectionInternal(JMSConnectionFactory.java:285)
at weblogic.jms.client.JMSConnectionFactory.createTopicConnection(JMSConnectionFactory.java:184)
I read your other thread Weblogic JMS port usage! where you have said a special -D property might be required, but I could not get the exact property for us to try it out.
Request your advise.
Regards
Suresh.

Hi ,
Would you be able to explain what are you trying to do , what is failing along with tha stack trace please?
Presumably, you have got JMS modules -> JMS Topic created and all assigned/targetted to the Managed server instances? Are you having trouble connecting/subscribing to that topic from your client code? if so, where does your client code execute from .. I mean is that on the same host as weblogic server ?
from the host that has your client code - try ping / nslookup /tracert to weblogic host and see if thats resolved in the first place.
HTH
Sri

ISCSI over NAT

Hi
I see that is is not possible with a standard config to connect to a MS ISCSI target over NAT , are there any special tricks to getting the external IP and not the internal.
Dave

Hi
I see that is is not possible with a standard config to connect to a MS ISCSI target over NAT , are there any special tricks to getting the external IP and not the internal.
Dave
Connecting from inside a VM should do the trick.
StarWind Virtual SAN clusters Hyper-V without SAS, Fibre Channel, SMB 3.0 or iSCSI, uses Ethernet to mirror internally mounted SATA disks between hosts.

Tunnel over NAT

Hi All
In our network we have configured tunnel over NAT setup
this tunnel is flapping continuously
with log meesage CRYPTOSESSION UP & DOWN
Attaching the configuration detail on the remote Side router
there is Crypto Seesion Up & Down log in the Hub Side router

Hi, Yes i have removed the crypto map from the tunnel & applied only in Fastethernet but the tunnel is still flapping
with the same log messages:
Aug 14 17:28:55: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 165.204.14.205 (Tunn
el160) is down: interface down
Aug 14 17:29:33: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is UP . Peer 195.75.9
7.209:4500 Id: 195.75.97.209
Aug 14 17:29:33: %CRYPTO-5-SESSION_STATUS: Crypto tunnel is DOWN. Peer 195.75.9
7.209:4500 Id: 195.75.97.209
Aug 14 17:29:55: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel160, chan
ged state to up
Aug 14 17:30:21: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 165.204.14.205 (Tunn
el160) is up: new adjacency
Configuration Detail
dubai-vpn1#sh running-config interface tunnel 160
Building configuration...
Current configuration : 388 bytes
interface Tunnel160
description Primary GRE to drsfso-vpn1
bandwidth 512
ip address 165.204.14.206 255.255.255.252
ip mtu 1400
ip hello-interval eigrp 1 40
ip hold-time eigrp 1 220
ip route-cache flow
ip tcp adjust-mss 1360
no ip mroute-cache
load-interval 30
delay 1000
qos pre-classify
keepalive 20 5
tunnel source FastEthernet0/1
tunnel destination 195.75.97.209
end
Regards
Gopinath.V

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

Services over NAT

Hi,
I am trying to conect two overlaping IP address sites ( see attached diagram). Site A LAN address will dynamic NAT to 10.1.1.0/24 at ASA5520.All the users from site A need to get services from site B ( DHCP, DNS, Mailbox,Print Servers, AD loggin etc). All the connections will be initiating from site A to B.
My question is
1-will all these services will run over NATed address.( dynamic) or I have to change to static NAT?
2- Has anyone running this kind of network and provide sample config for ASA 5520?
Regsrds,

Hi,
I suggest doing NAT on both sites.
For Site A with ASA running 8.4 software the NAT configuration might look something like this
Base Information
Site A LAN: 192.168.1.0/24
Site A LAN NAT: 10.1.1.0/24
Site B LAN (NAT): x.x.x.x/24
Site A LAN interface = inside
Site A WAN interface = outside
Configuration
object network LAN-LOCAL
subnet 192.168.1.0 255.255.255.0
object network LAN-NAT
subnet 10.1.1.0 255.255.255.0
object network REMOTE-LAN
subnet x.x.x.x 255.255.255.0
nat (inside,outside) source static LAN-LOCAL LAN-NAT destination static REMOTE-LAN REMOTE-LAN
What the above configuration will do is
Do NAT between interfaces "inside" and "outside"
When Site A users connect from their LAN-LOCAL to REMOTE-LAN their NAT IP address will be LAN-NAT This works both ways. When Site B REMOTE-LAN connect to LAN-NAT they will reach LAN-LOCAL of Site A
Also notice that since you are using this type of NAT that every LOCAL and NAT address will match eachother regarding the last portion of the IP address
192.168.1.1 = 10.1.1.1
192.168.1.2 = 10.1.1.2
192.168.1.3 = 10.1.1.3
etc
As I said before I would suggest you ask the Site B admin to also NAT their local LAN 192.168.1.0/24 to something and then you can use that network range and insert to the above configuration to the place of x.x.x.x.
Please rate if you found the information helpfull
Also ask more if needed
- Jouni

ASA IPsec Remote Access VPN | NAT Question

We have a situation where a company that needs remote VPN access to our network is having an IP conflict with our subnet. I know this is a common issue and can often be resolved on the client side by changing the metirc on the network interface, but I am looking for a better solution on our end so I do not have to suggest workarounds.
Part of the problem is likely that our subnet is "too big", but I'm not going to be changing that now.
We are using 10.0.0.0/24 and the remote is using 10.0.11.0/24 and 10.1.0.0./16
I played around with some NAT rules and feel that I am missing something I am looking for suggestions, please.
Thank you.

Hi,
This depends on your ASA firewalls software version and partly on its current NAT configurations.
I presume the following
Interfaces "inside" and "outside"
VPN Pool network of 10.10.100.0/24 (or some 192/172 network)
Software 8.2 and below
access-list VPN-POLICYNAT remark Static Policy NAT for VPN Client
access-list VPN-POLICYNAT permit ip 10.0.0.0 255.255.255.0 10.10.100.0 255.255.255.0
static (inside,outside) 192.168.10.0 access-list VPN-POLICYNAT
Key things to keep in mind with this software level is that if any of our internal hosts on the network 10.0.0.0/24 also have a "static" configuration that binds their local IP address to a public IP address then you might have to insert the above configuration and then remove the original "static" command and enter it back again.
This will change the order or the "static" commands so that the original "static" command wont override this new configuration as they are processed in order they are inserted to the configuration. The remove/add part is just to change their order in the configuration
Software 8.3 and above
object network LAN
subnet 10.0.0.0 255.255.255.0
object network LAN-VPN
subnet 192.168.10.0 255.255.255.0
object-group network VPN-POOL
subnet 10.10.100.0 255.255.255.0
nat (inside,outside) 1 source static LAN LAN-VPN destination static VPN-POOL VPN-POOL
In the above configuration we do the same as in the older software versions configuration but we have the number "1" in the "nat" configuration which places it at the very top of your NAT configurations and therefore it applies. No need to remove any existing configuration and enter them again like in the old software
In addition to the above NAT configuration you naturally have to make sure that the traffic to the NATed LAN network goes to the VPN. So if using Split Tunnel the NAT network needs to be added to the VPN ACL. If using Full Tunnel then naturally everything should already be coming through the VPN. I imagine though that you are using Split Tunnel, or?
Hope this helps
Please do remember to mark a reply as the correct answer if it answered your question.
Feel free to ask more if needed
- Jouni

Cisco Unity with Microsoft Exchange over WAN Question

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A customer has several offices. Each office has a separate Exchange Server. The partner was considering a single Unity deployment connected to all of the exchange servers over the WAN, but has decided against that because the latency of the WAN is too high to do this. They are looking for a best practice way of deploying Unity for these multiple Exchange servers at multiple sites. This might mean a separate Unity server for each exchange server at each site .
However, we’re wondering if there is a better way to do this. With multiple unity servers we’ll likely have different prefixes for each unity server at each location . This is something that the customer would like to avoid. We’re wondering if there any best practices for a deployment like this that we can offer as options for the customer.
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I have found some related information but really customer is altogether looking for an option away from Exchange networking over WAN.
I found:
“Multi-Site WAN with Distributed Messaging”
http://www.cisco.com/en/US/docs/voice_ip_comm/unity/5x/design/guide/5xcudg040.html#wp1077309
“Networking Options Requirements for Cisco Unity”
http://www.cisco.com/en/US/products/sw/voicesw/ps2237/prod_installation_guides_list.html
Design Guide for Cisco Unity also talk as much is there in the first URL.
Please Help!

This may be counter to your customer's desire or requirements but I must ask the question. Has the customer considered Unity Connection vs. Unity? Granted, Unity Connection provides integrated messaging whereas Unity is the unified messaging application; however, CUC has become Cisco's flagship messaging product over the last couple of years and I only see this expanding to be honest. So, for new installs - I push hard on Unity Connection. Sometimes, it's a sell but sometimes the customer has a hard requirement for UM and thus you have to go with UM. In your scenario, your customer could potentially save a LARGE amount of money as CUC is not dependent upon Exchange at all; however, you still have the option to tie into Exchange 2003/2007 as an external service where users can access messages in a 3rd-party message store and also access calendar data and so forth. The platform is very feature rich. Many of my current Unity customers are migrating off of the platform to the more "agnostic" CUC platform to avoid issues caused by such dependence on AD/Exchange. In addition, as Microsoft continues to develop and push it's own UM solution - integration for Unity is being forced to change (ex: changes to MAPI in 2010 caused problems for Cisco and required them to rework a bit of the underpinning integration points between Unity and Exchange). With CUC, you also have the flexibility to implment a dial plan within voicemail system itself...not to mention it is extremely scalable.
Hailey
Please rate helpful posts!

Accessing File Shares Over NAT

Hello,
I am working with a client that set up a new sub net that uses hide NAT. When I try to access a file share on a server in a different sub net, I can only browse for a few seconds and then an error such as "Server service not started" or "network
name no longer available" appears, and I can't browse folders on that server anymore (it has Server 2003 SP2). Netmon found that the connection was constantly being reset. If I reconfigure the same client (XP SP3) with it's original unNATed IP address,
everything works fine, and the Windows firewall is disabled on both the server and client. Is there a trick to get CIFS or SMB or whatever to work over hide NAT?
Thanks!

Hi,
SMB uses a single session for a pair of IPs and all file transfer between these 2 IPs are made over this session. This makes the file transfer more efficient over the network. On the flip side, since only one SMB session is maintained, clients coming through
NAT will have problems since all these clients are presented as a single IP to the server. With SMB, only a single session will be maintained and thus there is nothing unique for each client. This breaks the communication.
We will need to use NetBIOS over TCPIP in place of SMB. This can be achieved by:
1. Disabling SMB on the server or on all the client machines by setting the registry:
Name: SMBDeviceEnabled
Type: REG_DWORD
Value: 0
The location of the registry key is:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT\Parameters. You may have to create this if not already existing.
2. Block TCP port 445 for the segment accessing shares through NAT
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Ethernet over coax question

I have a coax cable running from the front house to the back house and want to connect my router to the iMac back there that serves up music and movies etc to the rest of the house. It's currently connected via wifi, but there are dropouts etc.
I've been pointed to a few different devices that can run ethernet over coax, such as this one:
http://www.netsys-direct.com/proddet...NH-310C&cat=27
there are a variety of them, and they all seem to say they have speeds in the 100mps to at the most 500 mps. My questions is this. How fast are current Airport and Ethernet speeds? I know they speak of Gigabit wireless, so does that mean 1000mps and up?
If I'm currently using wireless in this case, do you think switching to coax would slow things down a lot, or would it work ok?
thanks!

802.11g aka "wireless-g" has a maximum theoretical speed of 54 megabits/second.
802.11n "wireless-n", has a maximum theoretical speed of 300 megabits/second, but to attain that it requires near-perfect conditions. It's normal to observe less than half that in actual use.
These vary according to many environmental phenomena that influence radio propagation. Observed speeds tend to be considerably less. "Gigabit Ethernet" isn't so influenced, but may also be less than 1000 Mb/s due to other network factors.

NAT QUESTION - PLEASE HELP

Dear All,
I HAVE cisco 1841.
it has 2 interfaces.
the first one which is f 0/0 is have public ip from my ISP.
the other one is normal, and i am going to give it 192.168.1.100 / 24.
now i have 3 subnets totally diffrent .
i want to create 3 subinterfaces from f0/1.
my question is , how many subinterfaces can i add under the f 0/1 ?
and can i make this Router work as NAT ( overloading ) but all the 4 subnet will use the same public IP Address ?
can it be done as per this diagram ?
please update me.

THanks for your reply.
i have the followig results.
=============================================
HO-RO-Internet#sh idb
Maximum number of Software IDBs 1200. In use 12.
HWIDBs SWIDBs
Active 6 6
Inactive 6 6
Total IDBs 12 12
Size each (bytes) 2904 1280
Total bytes 34848 15360
Type SIdx Idx St,O,Sh Interface Name (subblocks)
H 1 1 U,D,R FastEthernet0/0 (HW SB CDP(4), MAC ADDR(2), Ether(1))
H 2 2 U,D,R FastEthernet0/1 (HW SB CDP(4), MAC ADDR(2), Ether(1))
H 3 3 A,D,R Serial0/0/0 (HW SB CDP(4), Serial(3))
H 4 6 U,D,R Loopback0
H 5 7 U,D,R Loopback1
H 6 8 U,D,R Loopback3
S 1 3 U FastEthernet0/0 (SW CDP(5), DSS(4), Dynamic DNS Updates(3
), NetBIOS(2), KEEPALIVE(1))
S 2 4 U FastEthernet0/1 (SW CDP(5), DSS(4), Dynamic DNS Updates(3
), NetBIOS(2), KEEPALIVE(1))
S 3 5 U Serial0/0/0 (SW CDP(5), NetBIOS(2), KEEPALIVE(1))
S 4 9 U Loopback0 (KEEPALIVE(1))
S 5 10 U Loopback1 (KEEPALIVE(1))
S 6 11 U Loopback3 (KEEPALIVE(1))
Key: SIdx=Sort Index, Idx=hw_if_index or if_number
St=Current State, O=Old State, Sh=Shadow State
A=Admindown, D=Down, G=Going Down, I=Init
R=Reset, T=Testing, U=Up, X=Deleted
HO-RO-Internet#
===========================================
so, from where can i know how many sub-interfaces i have ?
please update me .

Extra long lag with voice-over test questions

Hello,
I have recently been using voice over on my courses and the test for learners who may not be able to read. I have noticed when I use audio on a test question and choose the correct answer and click "submit" there is a long lag on the slide after clicking. It could be anywhere from 5-25 seconds of a lag between questions. I am at a loss on this and it only happens when I use audio.

Hi Ryan,
Maybe you are not aware of the fact that a question slide has a pausing point that is set by default at 1.5 secs. Look at the timeline: you'll see the pausing point as a vertical bar (not very visible on the blue timeline).
The two-step process for submitting is happening at that pausing point. After the second step (Press Y or...) the playhead will Continue if you keep the default actions for Success and After Last Attempt, which will mean that you'll have to wait till it reaches the end of the slide. Due to your VO the slide will have increased much in duration, original duration was 3 secs, which meant a waiting time of 1.5 secs after the pause. Now you'll have a much longer waiting time.
Two possible solutions:
Drag the pausing point more towards the end of the question slide (there is no other way than dragging)
Change the actions for Success and After Last Attempt to 'Go to Next Slide'. However sometimes this can cause an issue... depending on the deployment
More info: http://blog.lilybiri.com/question-question-slides-in-captivate
Lilybiri

Over Clocking Question

Hello this is just more of a question since I have never tried to overclock but have grown more curious about squeezing a few extra MHZ out of my processor, memory and video. I have all the latest drivers and software for my Nvidia 9600GT which are in SLI mode at normal settings but I also have MSI Core Center which is installed but never adjusted. The Bios settings are set to automatic I was not sure it to set to manual for Core Center or not. My question is more over if using the settings in Nvida control panel will be better or use the Core Center or if one will mess with the other? Im not looking for hardcore overclocking just enough to gain a bit of a performance boost is all

I would advise you to remove Core Center and do whatever OC'ing you do in BIOS. With the unlocked multiplier (which is the reason for the BE's existence) in the BE CPU's you can get easy OC by just upping the multiplier some. Your biggest performance gain would be the CPU OC, the smallest gain and probably not noticeable would be memory OC. As for any OC on VGA's I've never done any so I know very little about that and don't have anything to say on that subject.
Google and do some reading on overclocking the Black Edition CPU you have. There are a lot of OC forums on the web. A little bit of typing and a few mouse clicks opens up a world of information.

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