snooping device between router and modem

[RRMusashi]

OK, so I've tried a few searches on this topic but come up with nothing. I'm wondering if there are devices available which could act like the ethernet cable between a modem and a router but actually be able to snoop traffic. I'm wondering, if someone has physical access to my home internet hardware (but no router password) if they can hack into my connection physically?

 

[Smoblikat]

OK, so I've tried a few searches on this topic but come up with nothing. I'm wondering if there are devices available which could act like the ethernet cable between a modem and a router but actually be able to snoop traffic. I'm wondering, if someone has physical access to my home internet hardware (but no router password) if they can hack into my connection physically?

Well, small server with two ethernet ports could act as a medium. One plug is your incoming traffic, which is shared to the other port thats outgoing. Then use wireshark to see whats going between the two ports.

 

[RadiclDreamer]

As smoblikat said, a server could do this, but the easier way would be to use something like SPAN on a cisco switch. This would allow all traffic sent and received over one port to be mirrored to another. After that placing ethereal/wireshark on the other device would allow a per packet capture of everything that transpired on that link.

 

[JackMDS]

You should explain better your concern in technical terms rather than in a paranoic one.

I doubt that one is connected between your Modem and your Router because the ISP's Internet will probably disconnect or will not work because of authentication of two WAN IP addresses.

If some one is connecting after the Router there are simple ways to solve such problem.

 

[Jamsan]

If this is something you're looking to do short term, you could connect a hub between your modem and router and put a PC on that using Wireshark in promiscuous mode. It'll slow down your connection a bit if your internet is more than 10Mb, but as I said, should be fine if it's for a short term solution.

 

[RRMusashi]

Thanks all for the responses. I have a much better idea now of what's possible.

Next question is, "how does one deal with and live with overbearing and slightly crazy parents as an adult?"

 

[Fardringle]

Thanks all for the responses. I have a much better idea now of what's possible.

Next question is, "how does one deal with and live with overbearing and slightly crazy parents as an adult?"

Get your own place?

Or, if you choose to continue living in their house, then just live by their rules...

 

[JackMDS]

Next question is, "how does one deal with and live with overbearing and slightly crazy parents as an adult?"

Simple answer, it is called Therapy. --:$-:awe:--:sneaky:--().

 

[Smoblikat]

Thanks all for the responses. I have a much better idea now of what's possible.

Next question is, "how does one deal with and live with overbearing and slightly crazy parents as an adult?"

Lots of drugs..........

 

[RadiclDreamer]

Thanks all for the responses. I have a much better idea now of what's possible.

Next question is, "how does one deal with and live with overbearing and slightly crazy parents as an adult?"

Just take it that unless they are computer techs, they arent tapping you

 

[imagoon]

You are talking about transparent proxies / transparent firewalls / transparent SSL decryption. This stuff exists but is not plug and play. I doubt a non techy would have a clue how to work with it.

This is ignoring things like SPAN various other forms of port monitoring that exists for enterprise gear.

 

[unokitty]

OK, so I've tried a few searches on this topic but come up with nothing. I'm wondering if there are devices available which could act like the ethernet cable between a modem and a router but actually be able to snoop traffic. I'm wondering, if someone has physical access to my home internet hardware (but no router password) if they can hack into my connection physically?

With physical access, you could utilize a network tap. Here are instructions for making your own. You could also buy a commercial tap.

Of course, if I had physical access, I don't know that I would bother with a tap. I probably would just install a key logger on your computer.

Best of luck,
Uno

 

[imagoon]

With physical access, you could utilize a network tap. Here are instructions for making your own. You could also buy a commercial tap.

Of course, if I had physical access, I don't know that I would bother with a tap. I probably would just install a key logger on your computer.

Best of luck,
Uno

Those are so easy to detect. They also don't work on gig and often screwup full duplex dropping the connection to 10/half.

 

[alkemyst]

Thanks all for the responses. I have a much better idea now of what's possible.

Next question is, "how does one deal with and live with overbearing and slightly crazy parents as an adult?"

get your own place.

wireshark will also do what you want.