Cisco Firewall :: Asterisk / FreePBX Phone System Located Behind ASA 5505 Device
Feb 27, 2011
We have an Asterisk/FreePBX phone system located behind an ASA 5505 device where we are having problems with sip inspection.
We connect to three different phone providers, and things works as expected for 2 of the 3 providers,but for the last one (Draytel) we are having problems with sip inspection.
The key difference about the VoIP provider where we are having problems is that they are using differetn servers for the voice (RTP) traffic than the server we are registered with to establish SIP sessions.
sip inspection is configured with the default out of the box options.The problems we see are this:
1. For ingoing calls sip inspection does not open the required pinhole to allow the traffic to flow through. As a result we can not hear the voice of the calling party, but voice from our side is passed through ok.As a workaround we have added and ACE allowing traffic in the used UDP (RTP) range from this VoIP providers ip addresses to pass through the ASA, and with that in place incoming calls work.
2. Outgoing calls doesn't work because sip inspection doesn't kick in, and as a result of this we forward internal ip addresses in the SIP / SDP body to the VoIP provider. I'm not sure whether this is a consequence of sip inspection not kicking in for this provider, or a result of having added the ACE for an ip ragnge that covers the ip address we register with.
As stated above sip inspection does work as expected for two other providers where all traffic goes through a single server.We actually have had this working with ASA firmware 7.2(4), but as that version intermittently had a problem where sip inspection would stop working (fixable by power off/on or a clear command), then we decided to upgrade.
How to build dhcpd pools for nortel phones on an asa 5505. This is the config that I'm trying. The results I'm getting are that the pc and the phone both pull addresses from the data pool. If I switch the vlans on the trunk port, both devices pull from the voice port.
I have a problem with mi telephony server. My network topology is very simple. I have an ASA5505 connected to Internet throught an ISP. Behind ASA5505 I have a ToIP Server that operate well inside LAN network. However, when I try to register two or more extensions (Softphones) from Internet, Softphones some times it registers sucessfully, but some times doesn´t work.
The other hand, when softphones outside from LAN get register sucessfully in Asterisk server, is not possible that one of this calling the other one, and Asterisk server detects them as "UNREACHABLE". I don´t know if the problem are all commands of traffic inspect or if the problem is referenced to a particular UC proxy License.
Just started using our ASA 5505 v8.2 (1) Trying to configure the ASA appliance to allow access into an internal resource (i.e want to be able to RDP into a system behind the ASA from the internet).I have used a static NAT:
When I view the logs it is reporting the following:Inbound TCP connection denied from 206.100.100.1 (external IP) to 100.100.100.2 /3389 flags SYN on interface outside.Been pulling my hair out with this one as I believe I have everything configured correctly.
I was wondering if i can create (a) bookmark(s) of resources which are located behind a particular Site-to-Site VPN?We are using a Cisco ASA 5510 (9.0.2) with SSL VPN configured. The tunnel is up but when i try the bookmark, i get the error "server unavailable".
Within a workgroup environment we have four large drives, statically assigned and all accessbile via VPN. Our FW is a Cisco ASA-5505. Where within the ASA-5505 GUI can one of these drives be made inaccessible via VPN ?
I planning to integrate cisco asa5505 device in runing enviornment for filter ip traffic.Internet ----router----ciscoasa----lan.Ip series is public(25.263.25.0/24) througout of network (no privateIP)now how do I set asa in such case and filter traffic from comming into lan and going out to internet.
A customer got a new VoIP PBX, and now I have to forward port 443 on the ASA to the PBX for remote administration purposes. The LAN-interface of the PBX is in the same subnet as the ASA but has an external VoIP-router as default gateway and not our ASA. Is it even possible to forward the port to the PBX when there is no route of any sort to our ASA on it?
i did a reset on my asa by stopping the boot process because i could not remember what my enable password was, i had no problems with the reset the asa came backup as it should and i started configuring the device again. My problem is when the device is powered off and back on i lose all configuration that were made, i save the changes with "write me" before the restart and they are still being over wrote.
My little ASA 5505 is working great The device appears to be artificially crippled and limited to 10,000 connections. This isn't a "CPU limit" it's just some fake limit in the device as far as I can tell.
The problem we have is that we are only using around 500-600 connections and CPU usage is only like 25%, and yet the connection count is pegged at 10,000 and locks us out of our network.
I am pretty sure this is because there are a lot of "dead" TIME_WAIT connections hanging around not being used. In our application we only have the couple hundred connections but they do move around a bit every now and then.
Is there anyway to get the device to ignore the "dead" connections and not count them towards the artificial limit on the device given that it's pretty clear the CPU / etc., is not utilized sufficiently. These aren't real connections, we only have a couple 100 established, they do just move around a bit however.
We are really only using 500-700 connections according to our servers, the others are just sitting in TIME_WAIT doing nothing.
I know the AP541N can support the 7921 phone but all the documentation I've read assumes the AP541N is registering the phone with a UC500 system. I was curious if there would be any problems using this AP with a 7921 at a remote site (881SRST gateway used). It would be tieing into a CUCM BE system at the central office.
I am developing the system remote control desktop from mobile phone through internet. I want how the connection is established between mobile phone and desktop through internet? What is the exact process of connection and internal structure of connection
How to set up RVS4000 QOS settings to work with a VOIP phone system? I need to get the QOS active on the VPN so that a remote office with VOIP phones can reach the PBX at the main office over the Internet connection.
I'm new to networking and was looking for some assistance. First off im using packet tracer to diagram my senario as I will be receiving my equipment next week to deploy.
Hardware to be used:
1. 2 catalyst 3560 switches 2. all connect to a sonic wall router
I have two companies that work in the same office space. I need to keep these companies seperate on their own vlan. They will however need to share the phone system.(Packet tracer file uploaded to give those who have the time to see what I put together.) [code]
I have upgraded to prime LMS 4.2.2 (from 4.0.1) and can not perform system or device upgrade. Using wireshark I can see why. it looks like LMS is trying to go to this old web [URL] to get software. I believe this was fixed years ago in bug CSCto46927.
Can I reapply bug fix CSCto46927 on 4.2.3 or is there another fix?
A few weeks ago, I bought a Linksys AE2500 wireless adapter, and it's worked fine up until a few days ago. A few days ago, when I turned on my computer, I could not connect to the internet. I've tried uninstalling and reinstalling the drivers, but I am denied every time; the message I get is "A device attached to the system is not functioning".I've tried connecting to the internet with my other wireless box I used prior to getting the AE2500 and I cannot connect with that, either. The only way I can connect on this computer is with an ethernet cable.
I have a router Cisco 2800, but always is in Rommon, the message show is:
device does not contain a valid file system dir: cannot open device "bootflash:" rommon 8 > dir usbflash0: Checksum failed on c1840-usbfslib-m Expected checksum: 91d6, calculated checksum: 4527 open: file "c1840-usbfslib-m" not found open(): Open Error = -1 loadprog: error - on file open cannot load the monitor library "bootflash:%c1840-usbfslib-m" from device: usbflash0dir: cannot open device "usbflash0:"
I've purchased a wmp600n pci adapter january this year and installed it with no problems and did not encoutner a single problem with it until today. I use windows 7 64bit.
I've just came back from a 3 week absence and turned on my computer for the first time since i left. I notice that I have no wireless connection. So i go to network connections and realize that my wireless adapter dosent even show up..only my lan card. So i check my device manager, and under network adapters, i can see my wireless adapter, but with an exclamation mark next to it. I check the properties, and under the status box, it gives me this message.Your computer's system firmware does not include enough information to properly configure and use this device. To use this device, contact your computer manufacturer to obtain a firmware or BIOS update. (Code 35).
So i do what it says, and flash my bios to the latest version. After the update, I check the device manager, and the error message is still there. I check my wireless adapter driver version and it is v3.0.2, which is the latest version according to the linksys driver download webpage. I've tried uninstalling and re-installing the adapter but no luck there. I also checked to see if maybe there was a problem with my pci slot and that was not the problem because I was able to use my older wireless adapter.
I have seen this on 4 ASA devices:At devices running older versions than 8.4(5) it is possible to update to 9.1.1 but after updating to 8.4(5) the devices tells me that "There are no upgrades available, your system is up to date" when I "Check for ASA/ASDM updates". I downgraded one device to 8.4.4 and tried to upgrade to 9.1.1 but the update was unsuccesfull (could not boot).
I am trying to connect two Asterisk Server (with DHCP server enabled on both) on a HP Pro Curve 2626 switch. Server A has IP address 192.168.2.1 and Server B has IP address 192.168.3.1. I created a two new VLAN on switch, VLAN2 for 192.168.2.0 network and VLAN3 for 192.168.3.1 network. I put the command "ip routing" on the switch. My goal is to be able to ping ip address from PC 1(VLAN2) to PC 2(VLAN3) and vice versa... I'm not sure what I am missing... By the way, there is NO ROUTER involved on this set up. I tried to Google and it says HP ProCurve 2626 is a Layer 3 switch so IP routing should be possible.
-Region : Spain -Model : TD-VG3631 -Hardware Version : V1 -Firmware Version : 0.6.0 1.0 v0001.0 Build 130108 Rel.54595n
I have a problem with the VoIP feature of this router:I configure the router as a sip station of a asterisk local PBX (192.168.1.254),To this point everything is fine, I can call with a asterisk sip station to a analog phone (sip station 100) that is conected to the FXE port of the TPLINK,The problem occurs when I want to call with the analog phone to a sip station. I have a dial plan with a 0 prefix to call stations using the sip acount:Profile Name Registrar Address Phone Number Status Remove Edit Prueba192.168.1.254100up.And when I call, I can see in the log the INVITE action.
Region : Spain Model : TD-VG3631 Hardware Version : V1 Firmware Version : 0.6.0 1.0 v0001.0 Build 130108 Rel.54595n ISP :
I have a problem with the VoIP feature of this router:I configure the router as a sip station of a asterisk local PBX (192.168.1.254),To this point everything is fine, I can call with a asterisk sip station to a analog phone (sip station 100) that is conected to the FXE port of the TPLINK,The problem occurs when I want to call with the analog phone to a sip station. I have a dial plan with a 0 prefix to call stations using the sip acount:Profile Name Registrar Address Phone Number Status Remove Edit Prueba192.168.1.254100up And when I call, I can see in the log the INVITE action :
32013-03-19 10:16:33OTHERDebugport 1 cx 0x3, evt/reason 3/0 buf (nil) 42013-03-19 10:16:01OTHERDebugport -1 cx 0x3, evt/reason 1/4 buf 0x4761a8 52013-03-19 10:16:01OTHERDebugthe initial INVITE request for [accIndex(0),callIndex(3) dest(<sip:103@192.168.1.254>)] is sen
But I�am sniffing traffic in the PBX and not received the invitation... Obviously the 103 station never recive the call...I think that maybe the INVITE is going out behind the WAN interface.... bug version?
I want to use the flexconnect in the same network where the wlc is located. Normally we will do it for over WAN and branch office. But I want to use in the same main office to avoid more bandwidth utilization on my distribution layer. Wlc is connected on Distribution switch.I want to do local switching in the access layer switch.
The below is the sample topology. But real topology contains nearly 200 AP's(3600 series) and 20 access switches and so on.....So there is a chance of 200 AP * 350 Mbps can flow on the distribution layer.So ,
1)If I use flexconnect any issues will be occuring?
I have a new 5505 that im trying to upgrade the IOS on. The 5505 and the laptop are connected via a 5 port switch.From the laptop i can ping the inside interface of the 5505, but i cannot ping the laptop from the 5505. As a result, my TFTP is failing.
I am renovation my own house, and I have started to hard wire for the network/s, but I am also trying to incorporate so much more than any previous “wireless” setup I have had, well I am a bit confused to say the least.I would like to set up a home network and media server system which includes:Internet browsing (multiple rooms and wireless) File sharing, printer sharing, scanner etc Music/Video sharing/streaming, TV etc.I have started wiring (we are renovating) with Cat5e, and have just replaced the old POTS (telephone) wiring with Cat5e and taken the individual telephone wires (including the incoming telephone cable) back to one central connection unit in a network patch panel. This has improved the speed of my DSL download connection speed from 1.2mbs to 6.2mbs. unreal!, so that did get me a bit fired up!I am currently wiring data points (Cat5es from each room) back to the same panel, but to be honest I am not really sure where to go from there! Also, I have wired Sat cables back to this point ready to be connected to sat TV (dish) in case if we get it. This patch panel is in a small passageway that goes through to the garage from the house. It is conveniently located next to the mains board which I have just replaced. My original idea was to put any extra needed equipment in the same location, but looking at it, I think that I may have to think again, for there is little room. I have found a small alcove in the upstairs games room which has a shelf, and which could take any hardware, also it will be dust free (unlike the place leading to the garage). I can run as many cables as needed from this location to the patch panel, but obviously I would like to know how many, as I am not familiar with networking on this scale, my only other experience being wireless setups. For example, would the switch need to be located where the patch panel is, or else can it be on the shelf with the other stuff? (away from the panel), and the existing D-link 4 port router?? is this no longer required?Im presuming i will need an old PC or some sort of media storage device here too... no ideas with this either. Have tried asking three different computer stores, got three different answers...?!
Have I dropped a clanger wiring to the passageway, when infact any server/switch or whatever wont be in the same location?Also, I am planning on getting a MAC book, and would like to use this on the system sometimes (might not be relevant), just thought to mention. And, I was thinking of trying Linux, as I am fed up with all the windows problems. But not sure if that is a good idea either.We have TVs in the (when its finished) media room, also three other areas, which I would like to get connected so that they will be able to get either TV or watch a film from storage wow this is getting complicated and if it matters I do have a PS3, which we only really bought to use as a TV storage system/recorder.
I have tried numerous times to install the disk and the adapter, but it always says it cannot locate the adapter. I know that the ports (I have tried them all) are working properly because they have been in use. I tried the chat. He suggested I call the 1-800 number. I don't have time to wait on hold forever, which I did anyway until I finally hung up.
why my router will not synchronize with an NTP server located an off-site facility; the NTP server is located at the Naval Observatory. I have a Cisco 7200 VXR IOS 12.4 The clock and calendar both are set correctly.
I'm new to this cisco 5505 and I want to carry out a task as simple as a remote access VPN, in my case I did the wizard, with time on my test, I could connect to the VPN, but I can not ping any device internal network. [code]
We have 2003 Domain With Active desktop enable for client.Problem Is who ever loging in to my domain they are getting desktop icons in blue color.i have check these but no result
1}My computer properties-advance- performance 2} desktop right click -arrange icons -lock web items on desktop 3} i have checked with display properties.
