So I have run into a bit of a conundrum and figured I would see if anyone on here has a suggestion or has run into a similar issues.
Here is the situation, I have a company that works in places like theaters and sports arena. We move around A LOT!! Sometime in different cities each day for weeks at a time. At each location we want to setup an office and one of the things we want to use are our VOIP phones. We use only Aastra phones, 6739i, 6757i, and 600 series DECT. Our server are running PIAF Green (Asterisk 11.3/FPBX 2.11) and hosted by RentPBX. I should note that we have Travelman3 installed and also use/rely on iSymphony as our FOP.
Now at our main office we have a static IP which has been whitelist in IPtables and everything is hunky-dory for the most part. Now when we move around to different cities (i.e. different networks) there is no telling in advance what IP will be or if it will even be static. Now I know what you are probably thinking, "why don't they just use their smartphones with travelman". Well I'll tell you why, we like good (kinda) ol' fashion hardwire phones – and personally if you knew some of the people we had to deal with you wouldn't want to give out your cellphone number either.
That being said, I need suggestion for how to deal with traveling with our SIP phones to different cities, allowing them to connect to our PBX without fully exposing port 5060 to every SIP hacker, and without having to jump threw a million hoops (or would that be hops). One thought I had was bring a VPN with us and doing a PPTP back to the PBX. We've had wonderful success with Peplink Balanced 20 routers. The only issues there is we could get caught up in some very nasty double-NAT scenarios as we aren't always able to connect to the network at the WAN head and end up somewhere down the line on a managed switch.
So, anyone have any thoughts....
Here is the situation, I have a company that works in places like theaters and sports arena. We move around A LOT!! Sometime in different cities each day for weeks at a time. At each location we want to setup an office and one of the things we want to use are our VOIP phones. We use only Aastra phones, 6739i, 6757i, and 600 series DECT. Our server are running PIAF Green (Asterisk 11.3/FPBX 2.11) and hosted by RentPBX. I should note that we have Travelman3 installed and also use/rely on iSymphony as our FOP.
Now at our main office we have a static IP which has been whitelist in IPtables and everything is hunky-dory for the most part. Now when we move around to different cities (i.e. different networks) there is no telling in advance what IP will be or if it will even be static. Now I know what you are probably thinking, "why don't they just use their smartphones with travelman". Well I'll tell you why, we like good (kinda) ol' fashion hardwire phones – and personally if you knew some of the people we had to deal with you wouldn't want to give out your cellphone number either.
That being said, I need suggestion for how to deal with traveling with our SIP phones to different cities, allowing them to connect to our PBX without fully exposing port 5060 to every SIP hacker, and without having to jump threw a million hoops (or would that be hops). One thought I had was bring a VPN with us and doing a PPTP back to the PBX. We've had wonderful success with Peplink Balanced 20 routers. The only issues there is we could get caught up in some very nasty double-NAT scenarios as we aren't always able to connect to the network at the WAN head and end up somewhere down the line on a managed switch.
So, anyone have any thoughts....