Hi;
We want to connect a branch to the HQ, in HQ we've DSL connection use Cisco Router 887, in the branch we've not DSL availability, so we bought a 3G Modem (by SIM Card) to get Internet.
the question: Is it available to connect the 3G modem with a new Cisco router in the branch and make a VPN with the HQ?
Cisco Router(Branch)----3G Modem----[[Internet]]---------Cisco Router(HQ)
Please help.
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Answers (2)
0
Votes
What make/model 3G modem?
If the 3G is a USB-only or PC-Card modem it is not going to work with a Cisco router, as there is no place to plug that in, nor will Cisco IOS play with others.
Cisco sells the 819 or 880 which has a 3G interface built in, that would be your best bet
http://www.cisco.com/en/US/products/ps10082/index.html
Cisco sells the 819 or 880 which has a 3G interface built in, that would be your best bet
http://www.cisco.com/en/US/products/ps10082/index.html
29th May
Replies
thanks for reply.
It's a router like speedtouch or linksys, and we've already bought it.
is there away to work with that.
It's a router like speedtouch or linksys, and we've already bought it.
is there away to work with that.
alsolaih
30th May
0
Votes
Overall, for basic connectivity, that would work, but not for VPN
To put a router-behind-a-router, means doing double NAT, and a IPSEC VPN will not work over a double-natted connection. Plus then there are issues with setting up firewall rules, port forwarding and even practical issues like getting onto the correct network to get to the management interface of each router.
Some routers have a VPN-passthru mode, which does allow IPSEC to work by basically bypassing the NAT firewall, however, then you would need to configure both the Speedtouch/Linksys AND the Cisco routers to setup the VPN connection.....wayyyy too complicated.
But overall, if you have a new Cisco router in the branch office, simply buying a proper 3G interface for that router, or getting a Cisco router with a 3G interface already included. Even if that costs a lot more, it will be 100% more reliable, faster, and much simpler to configure and support.
Some routers have a VPN-passthru mode, which does allow IPSEC to work by basically bypassing the NAT firewall, however, then you would need to configure both the Speedtouch/Linksys AND the Cisco routers to setup the VPN connection.....wayyyy too complicated.
But overall, if you have a new Cisco router in the branch office, simply buying a proper 3G interface for that router, or getting a Cisco router with a 3G interface already included. Even if that costs a lot more, it will be 100% more reliable, faster, and much simpler to configure and support.
30th May
Replies
Thanks a lot, I'll inform you with the update.
alsolaih
7th Jun
