3G or 3rd generation mobile telecommunications is a generation of standards for mobile phones and mobile telecommunication services fulfilling the International Mobile Telecommunications-2000 (IMT-2000) specifications by the International Telecommunication Union.

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2answers
38 views

Does the DNS resolver know about the application layer protocol in use? [closed]

My iPad's 3G connection usually gets hijacked and shows me my provider's welcome page every time I first browse the internet. I have noticed that this only happens when using HTTP, and pages that use ...
0
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1answer
117 views

Domain name works with 3G connection but not on WiFi

I'm an administrator on two different SBS 2011 servers. Both servers are running MS Exchange. They are on different physical location, different hardware, different domains both internally and ...
1
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0answers
41 views

Remote desktop and 3G mobile broadband, timeouts

I work as a developer / tech-supporter at my current company. The company has 100-120 employees each of which have a company supplied laptop with a built-in 3G modem. Employees are scattered ...
1
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2answers
442 views

Poor Bonding performance over 2 bonded vpn channels

I have two Linux machines that I wish to connect via a bonded link. One machine has two UMTS modems (DN:5mbit UL:1.2mbit) as its gateways, and the other machine has optical fiber (DL:100Mbit UL: ...
1
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2answers
46 views

Remotely manage mobile-broadband-connected linux host [closed]

I have a remote Linux host that is connected to the internet via mobile broadband, and hence does not allow incoming connections. Does anyone know if there is a service that could allow me to remotely ...
0
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0answers
80 views

Connecting Sierra Wireless router to VPN on Cisco router

I'm not really a network professional, but as an analyst-programmer in a small start-up, I have a lot of network-related work to do. I currently have to set up a VPN between our Sierra Wireless ...
0
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3answers
63 views

Broadband router with builtin cellular backup [closed]

At my dad's workplace they often have internet outages that cause them to lose business. My dad wants to have a 3G internet connection as backup to their primary connection. They want to have it ...
1
vote
1answer
115 views

iPhone loads Wi-Fi captive portal page over 3G (iOS 6)

I've made a captive portal using iptables NAT redirection and white-listed MACs. This works nicely, and iDevices pop up my login/terms page after association. However, I've noticed that when 3G is ...
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votes
2answers
309 views

Antenna connection 3G modems [closed]

something less software related. :) I need to identify the antenna connector for two of 3g modems. the connector looks like this: I do have a crc9 antenna i would like to use, so i just have to ...
0
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3answers
159 views

What's the best fail-safe backup option to access the firewall in case the network becomes unreachable?

We're hosting 12 servers on a rack in a datacenter with minimally sufficient administrative skills to do the job right now. We have VPN to a firewall and a DMZ and internal network configured. But ...
10
votes
1answer
376 views

What are the data link protocols for cellular networks? [closed]

What are the link layer protocols for cellular networks? There are several platforms for high speed cellular networks. From GSM, to GPRS, W-CDMA, HSPA, LTE, etc. I (mostly) know about the physical ...
0
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1answer
116 views

How to prevent particular program from using particular network connection under Windows?

In my company almost every user has 3G mobile connection and many of them travel a lot. To prevent expensive mobile charges I'm looking for a solution that would prevent particular program (Windows ...
1
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0answers
426 views

Share 3G connection over WiFi-LAN network [closed]

This is how I have established network between my PC and my laptop at home (being novice in networking, it took me few days to achieve the feat). And it is working perfectly. I can easily share files ...
3
votes
1answer
292 views

UDP Packet Size.. max, ping failing to 3G.. Recalcitrant software vendor

We have a network of 330 clients (Service Vans) connected via 3G to our central office. Currently these clients are connected via a small ruggedized 3G router that establishes the 3G connection and ...
-2
votes
2answers
257 views

Recomend a 2G/3G/4G router with two or more SIM cards [closed]

I'm looking for a device that takes two or more GSM SIM cards, connects over 2G/3G/4G, depending on what is available in that area, and aggregates those links for higher bandwidth and/or redundancy in ...
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votes
3answers
199 views

Cell Tower IP Address Blocks [closed]

I am thinking of creating an app that only allows users connected via a cell tower. Are there IP ranges that are only used by cell towers? I realize that it may be a 'moving target', but does anyone ...
1
vote
0answers
151 views

Cisco 2900 series router - 3x 3g HWIC - Can you use the same subnet for each HWIC?

We host a site with a 2900 series router with 3x 3G-HWIC cards installed. It is hosted with telstra and plugs into our corporate WAN. The card authenticates against radius and advertises a route ...
1
vote
1answer
692 views

Trying to configure HWIC-3G-HSPA

I'm trying to configure a couple of Cisco 1941 routes. The are both identical routers. Each as a HWIC-1T (Smart Serial interface) and a HWIC-3G-HSPA 3G interface. These routers are to be sent to ...
1
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0answers
89 views

Cisco 1841 w/ 3x 3g HWIC - Can high utilisation cause disconnect?

It is my experience that when an interface is being overutilised that the queues start to overflow and the device will start dropping packets. I am currently experiencing difficulties with a cisco ...
1
vote
1answer
475 views

Can I limit how much bandwidth is consumed by active directory stuff on windows 7 clients running over 3G

We have a number of windows 7 clients on mobile devices. These are connected over 3G (sometimes wifi) to a LAN. Authentication is through active directory. This is consuming bandwidth by constantly ...
5
votes
6answers
3k views

Ubuntu failover from Ethernet-to-ADSL-modem to USB 3G dongle

I have an internet connected Ubuntu server, connected by Ethernet to a residential ADSL line. This is adequate, most of the time, but I can't rely upon the ADSL link to be as reliable as I'd like. ...
1
vote
1answer
4k views

network is not available even when cisco vpn client is connected. wrong route?

I'm using Vodafone 3G modem. I've disabled other network devices in the system (ethernet, wifi, wimax) turned off firewall and antivirus. cisco vpn client connects successfully but I still can not ...
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votes
3answers
704 views

Mapping a private server (running in 3G mobile network) to a public subdomain

Networking newbie question: I am trying to understand what would be the best way to expose several mobile web servers, all of them are behind a router which is a typical 3G network configuration, ...
0
votes
1answer
81 views

Internet Backup if DSL & Cable Fail [closed]

We have a T1, a DSL Line and a cable modem in each building to assure that we can connect to the internet in case one fails. However during the latest power outage we also lost all of them and were ...
4
votes
2answers
5k views

Can 3G networks be packet sniffed / analyzed?

Just wondering if 3G networks can be sniffed like public wifi networks, via wireshark for example (I'm almost sure this is not possible due to encryption, but I just want to make sure?)
1
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2answers
347 views

High Transaction System Recommendations [closed]

I am a SQL Server database administrator and developer and I also have many years experience as an application developer. I currently have a customer with a very big project who is looking to me for ...
1
vote
2answers
640 views

Site not resolving on Att 3g network through Iphone

I have a website www.example.com and it works fine everywhere except when using 3g on my iphone, even works on Edge network. I have installed ping on my iphone and when on 3g it is says unable to DNS ...
0
votes
1answer
125 views

Securing a server by using an allow list based on UDID of 3G mobile devices

How can I create a white list of a server that distinguishes between Mobile devices based on their UDID.
1
vote
1answer
181 views

Ubuntu - 3G Wireless Internet Security

I have a standalone Ubuntu 10.04 server (+ gnome) with a wireless 3G internet connection that is used to download data from an ftp server, process it, and then upload it again. Remote administration ...
2
votes
2answers
1k views

Keeping a persistent 3G connection on Windows

I'm in charge of managing an array of Windows Embedded 7 Standard based PCs (they act just like plain old Windows 7). The computers have 3G cards as their only means of communication, and are on ...
0
votes
1answer
3k views

Error 619 PPTP VPN on Windows 7

I have spent 3 hours trying to work this out but I'm all out of ideas. I have a 3G internet connection via a USB dongle and a Windows 7 laptop, I cannot connect to a PPTP VPN while connected to the ...
0
votes
1answer
511 views

How to create routes for LAN IPs in Windows XP

Hello i'm trying to use lan and 3g network at the same time on XP, as per previous questions i need to create routes for lan ip ranges. How can i do this
0
votes
2answers
547 views

3G/Edge/GPRS IP addresses and geocoding [closed]

So, we're looking to develop a mobile website. On this mobile website, we'd like to automatically populate a user's location (with proper fallback) based on their IP address. I'm aware of geocoding a ...
0
votes
3answers
616 views

Cheapest way to get a Cisco firewall with a Sprint data connection?

I work for a Sprint dealer. A customer of ours has sites where the only available internet connectivity is a Sprint cellular signal. They've been using a Cisco ASA5505 firewall. To give it WAN ...
1
vote
2answers
408 views

Lan on Wifi, internet on 3g Windows 7

I'm using Windows 7 and I'm currently without DSL because we've just moved. I'm using my iphone tethered as a 3G modem but whenever I turn on the wifi I'm unable to browse the internet. How do I ...
4
votes
2answers
20k views

How does 3G/Mobile phones get allocated an IP address? Does this mess with Google Analytics?

This question is in two parts. Q1. How does a mobile phone get an IP address over 3G? Like, would it get the same IP for a shortish period of time (Eg. 1 day, etc)? Because my phone is constantly ...
2
votes
4answers
12k views

How to hack airport extreme to support USB 3G modem?

Has anyone out there ever tried to hack the Airport Extreme, specifically with regard to the USB port? There are many cellular routers available that provide WiFi sharing of a USB modem link. However, ...