CircleNet would like to introduce ourselves to the Obi world
Sam_from_CircleNet:
Sorry we can't port in numbers we are an outbound only service.
I don't have any affiliation or agreement with them at all but I personally recommend future-nine for your inbound service. I've heard good things from some of my customers that are also there customers and they seem very honest and straight forward with their pricing.
Sam
rawsis:
I'm finally registered. Need to write out all the needed info so I don't forget how it did it. ;)
I just registered with Callcentric for incoming calls. If this doesn't work out, I'll check futurenine.
ToddAllen:
After 1st setting up my Obi100 to use CircleNet and CallCentric, I wanted more flexibility and installed FreeSWITCH on a Linux box I leave on as a home file server. I switched the Obi to register via SIP with the new FreeSWITCH PBX which handles the connections to CircleNet and CallCentric.
Each time I place an outbound call via CircleNet I start receiving a lot of suspicious looking traffic to a great variety of ports: 22, 23, 1900, 5000, ... and on and on from a great variety of IP addresses from all over the world although a good percentage are from China Telecom, Guangdong. It starts as a flood and subsides to a trickle but continues on for many hours. My router is configure to drop all this traffic and log it. I use port forwards with remapping and only have two ports open for sip 5060 & 5080 internal both remapped to much higher external port numbers. I have a cable modem with a dynamic IP and if I change my router's WAN MAC address and reboot I get a new IP address and the crazy inbound traffic stops. Until I place another phone call.
In addition to this suspicious traffic it also looks like I'm dropping what might be desirable traffic from IPs that are registered to CircleNet because it is on a different port number from the one I've sent on. Most of the time my outbound calls are handled correctly, though there have been times when audio only works in one direction and sometimes my calls are dropped usually around 90 seconds. I don't know what is causing all of the undesirable inbound traffic and I'm wary to open up any additional ports until I have a clearer understanding of what is going on. I've tried monitoring all traffic in/out of my router, both successful and dropped and I don't think my router or server has been compromised/virused and am guessing the problem is my unencrypted communications to/from CircleNet are somehow being snooped on by hackers and it triggers some sort of automated probing looking for ways to gain access to the computer running my PBX.
The FreeSWITCH documentation covers a variety of encryption option such as TLS, ZRTP, SSL, SRTP, etc. and I'm guessing I should enable one or more of these and that might stop the deluge of unwanted inbound traffic after each phone call. However, I don't see any documentation on the CircleNet website regarding encryption so I'm not sure what if any of these encryption options they will support. I'm fairly new to all of this, so any suggestions of how I should configure FreeSWITCH and my router to minimize trouble would be much appreciated.
voiper1:
Quote from: ToddAllen on May 17, 2014, 10:04:06 pm
After 1st setting up my Obi100 to use CircleNet and CallCentric, I wanted more flexibility and installed FreeSWITCH on a Linux box I leave on as a home file server. I switched the Obi to register via SIP with the new FreeSWITCH PBX which handles the connections to CircleNet and CallCentric.
Each time I place an outbound call via CircleNet I start receiving a lot of suspicious looking traffic to a great variety of ports: 22, 23, 1900, 5000, ... and on and on from a great variety of IP addresses from all over the world although a good percentage are from China Telecom, Guangdong. It starts as a flood and subsides to a trickle but continues on for many hours. My router is configure to drop all this traffic and log it. I use port forwards with remapping and only have two ports open for sip 5060 & 5080 internal both remapped to much higher external port numbers. I have a cable modem with a dynamic IP and if I change my router's WAN MAC address and reboot I get a new IP address and the crazy inbound traffic stops. Until I place another phone call.
In addition to this suspicious traffic it also looks like I'm dropping what might be desirable traffic from IPs that are registered to CircleNet because it is on a different port number from the one I've sent on. Most of the time my outbound calls are handled correctly, though there have been times when audio only works in one direction and sometimes my calls are dropped usually around 90 seconds. I don't know what is causing all of the undesirable inbound traffic and I'm wary to open up any additional ports until I have a clearer understanding of what is going on. I've tried monitoring all traffic in/out of my router, both successful and dropped and I don't think my router or server has been compromised/virused and am guessing the problem is my unencrypted communications to/from CircleNet are somehow being snooped on by hackers and it triggers some sort of automated probing looking for ways to gain access to the computer running my PBX.
The FreeSWITCH documentation covers a variety of encryption option such as TLS, ZRTP, SSL, SRTP, etc. and I'm guessing I should enable one or more of these and that might stop the deluge of unwanted inbound traffic after each phone call. However, I don't see any documentation on the CircleNet website regarding encryption so I'm not sure what if any of these encryption options they will support. I'm fairly new to all of this, so any suggestions of how I should configure FreeSWITCH and my router to minimize trouble would be much appreciated.
Hi, you may want to try emailing CircleNet directly. Your post looks more like a FreeSwitch ad. I am sure if Sam can help he will, but really this looks out of place in this thread. So far CircleNet works fine for most people.
Cheers... :)
swg0101:
Quote from: ToddAllen on May 17, 2014, 10:04:06 pm
After 1st setting up my Obi100 to use CircleNet and CallCentric, I wanted more flexibility and installed FreeSWITCH on a Linux box I leave on as a home file server. I switched the Obi to register via SIP with the new FreeSWITCH PBX which handles the connections to CircleNet and CallCentric.
Each time I place an outbound call via CircleNet I start receiving a lot of suspicious looking traffic to a great variety of ports: 22, 23, 1900, 5000, ... and on and on from a great variety of IP addresses from all over the world although a good percentage are from China Telecom, Guangdong. It starts as a flood and subsides to a trickle but continues on for many hours. My router is configure to drop all this traffic and log it. I use port forwards with remapping and only have two ports open for sip 5060 & 5080 internal both remapped to much higher external port numbers. I have a cable modem with a dynamic IP and if I change my router's WAN MAC address and reboot I get a new IP address and the crazy inbound traffic stops. Until I place another phone call.
In addition to this suspicious traffic it also looks like I'm dropping what might be desirable traffic from IPs that are registered to CircleNet because it is on a different port number from the one I've sent on. Most of the time my outbound calls are handled correctly, though there have been times when audio only works in one direction and sometimes my calls are dropped usually around 90 seconds. I don't know what is causing all of the undesirable inbound traffic and I'm wary to open up any additional ports until I have a clearer understanding of what is going on. I've tried monitoring all traffic in/out of my router, both successful and dropped and I don't think my router or server has been compromised/virused and am guessing the problem is my unencrypted communications to/from CircleNet are somehow being snooped on by hackers and it triggers some sort of automated probing looking for ways to gain access to the computer running my PBX.
The FreeSWITCH documentation covers a variety of encryption option such as TLS, ZRTP, SSL, SRTP, etc. and I'm guessing I should enable one or more of these and that might stop the deluge of unwanted inbound traffic after each phone call. However, I don't see any documentation on the CircleNet website regarding encryption so I'm not sure what if any of these encryption options they will support. I'm fairly new to all of this, so any suggestions of how I should configure FreeSWITCH and my router to minimize trouble would be much appreciated.
Calls dropped after 90 seconds usually means that pings going back to your device has timed out, and therefore your calls are terminated for non-response. You should make sure that your external SIP and RTP IPs are set correctly, and since you are using NAT for your Freeswitch, I suggest you look here:
https://wiki.freeswitch.org/wiki/NAT_Traversal
and under the "FreeSWITCH behind NAT" section for instructions on how to setup STUN.
Traffic to ports you mentioned are quite common, and I would consider them "background noise." Anytime you are on the Internet directly connected to the modem, you should expect to see some of these "scanner type traffic" to your device. These are harmless and I wouldn't consider them an attack unless you are not adequately protected (or if they saturate your link).
As far as encryption goes, I don't really see many providers actually supporting these. Some providers would allow you to tunnel into their network(s) via OpenVPN, although I don't think CircleNet offers this at the moment.
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