Is it possible to hide your LAN from your ISP?
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How can I be sure about that? :) Can somebody advise me to a link, where I can check how my PC appear to the outside world. I have seen many in the past but I cannot find any right now :_) (as usual)
Go to http://www.grc.com/default.htm[^] and select "Shields-Up" and notice the IP Address (or DSN name) shown. Try going to that page from different machines connected to the router and you will see the same address, which is the one assigned to you by your ISP, which your router is using. Peace! -=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
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I know that the ISP can see that you have a router. I lost connection once and tech support was giving me a hard time becuase they do not support customers who have routers. They insisted that the problem was with the router and I had to disconnect the router and call them back. So I know that they can see that you have a router or hub hooked up.
There are 10 kinds of people in this world. Those who understand binary and those who don't. We shouldn't assume something's debugged just because everyone in the whole world has access to the source code.
I had that same problem once while talking to TimeWarner. I started looking around and found that my router was set to not respond to ping requests. So I set the router to respond to pings, then called TimeWarner back. This time, the tech support guy said nothing of the router. :cool: Now whether or not this other tech support guy knew that I had a router and didn't care is a different question. :~ -J
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Cristoff wrote: I don't know if he has the right to spy on any information how many PC do I have connected but anyway I don't want that he checks how I use my PCs without asking me or warning me. Why do you think that he can or cares to do so? If you've set up your router to deny unwanted incoming traffic as a firewall this should keep the ISP out as well as everyone else. Am I wrong? Dan Morris
Dan Morris wrote: Why do you think that he can or cares to do so? If you've set up your router to deny unwanted incoming traffic as a firewall this should keep the ISP out as well as everyone else. Am I wrong? I know he's doing that, because one of the admins has acknowledged it.
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OK, first, IANANE (I Am Not A Network Engineer), but if I recall correctly, using NAT (Network Address Translation), which is what your router is likely doing to provide multiple access via one single WAN IP address, completely hides the internal IPs thus all of the internal machines, using it. That is why the addresses used internally can be just about any IP address, including the reserved private network range of 192.168.*.* which is normally unroutable. Now, while you can hide the obvious presence of multiple machines, you cannot hide the activity of them. For example, if you had three machines using it (you, your spouse, and your kid), if someone looked closely enough at the traffic they might be able to figure out that you appear to be using CodeProject, Amazon and Noggin all at the same time! Besides, the days when ISPs would restrict your connection to a single machine are mostly over (a single IP addres, yes, but not a single machine). I remember when Mediaone/ATTBroadband/Comcast used to do that a few years ago, but no longer.
OT: Ever notice that when people talk about roads, they can say either "root" or "r-out" for the word "route", but I have never heard a network router called a "root-er", always a "r-out-er"...! Peace! -=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavoritesJames R. Twine wrote: you appear to be using CodeProject, Amazon and Noggin all at the same time! I can browse using multiple screens, use P2P apps, etc at the same time on one machine. Top 10 Geek Resulutions: 5. To decipher what that big room is, which has the blue ceiling and poor climate control.
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Hi, Is it possible to hide my LAN from my broadband Cable ISP? I don't know if he has the right to spy on any information how many PC do I have connected but anyway I don't want that he checks how I use my PCs without asking me or warning me. Thank you!
Buy a hardware firewall and implement basic security on all systems. There are a million sites devoted to it. They can't see any info on your pc's if you have proper security implemented. If you don't and are on Cable internet (for example) it's very likely everyone else on the same cable loup as you can see all the files on your computer. We found a bunch of people on our cable loop that had business networks and no security, we could see all their computers, files, printers etc. We told the cable company but nothing changed so we finally ended up printing warning messages on all their printers explaining the situation and within a week they had all disappeared.
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Hi, Is it possible to hide my LAN from my broadband Cable ISP? I don't know if he has the right to spy on any information how many PC do I have connected but anyway I don't want that he checks how I use my PCs without asking me or warning me. Thank you!
why hide it? I haven't heard of an ISP caring about multiple computers hooked through a router in like 4 years. Almost everyone has a LAN these days. Last time I signed up with comcast (cable modem) they even offered to help setup your LAN.
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Hi, Is it possible to hide my LAN from my broadband Cable ISP? I don't know if he has the right to spy on any information how many PC do I have connected but anyway I don't want that he checks how I use my PCs without asking me or warning me. Thank you!
As a general security rule, assume that anybody from the outside world could get to your cable modem in the first place. You would do best by setting up a hardware firewall inside that does NAT. I use a linux box attached to a wireless access point. Many routers will do this for you automatically. Check your docs or google for your router's model number. Or if you're lucky enought to have a linksys WRT54g, you can get all sorts of third party tools and utilities for it from sveasoft. If you're doing NAT (Network address translation) yourself on your side of the cable modem, the modem will be passing everything both ways to a single IP address, the one your provider issued you, and nobody should have any problems. It's possible that there are algorithms available to analyze the actual packets and try to figure out whether they're coming from more than one machine, but it would be fairly complex, not 100% accurate, and require more processing than it's worth on the ISP side. (My own analysis, perhaps some retarded ISP would think it's worth it to spend money there, I wouldn't) I'd love to draw a picture with a bunch of private IP addresses being translated through the NAT machine, but if you just google for NAT or IP translation, you will get hundreds of hits explaining it much more clearly than I can. -mike -www.channelmike.com
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why hide it? I haven't heard of an ISP caring about multiple computers hooked through a router in like 4 years. Almost everyone has a LAN these days. Last time I signed up with comcast (cable modem) they even offered to help setup your LAN.
That's not the case here. It is stupid but we have just 2 broadband internet providers and the service is not very good but prices are high. Hopefully there will be more DSL providers in the future but currently it's not the case. Allen Anderson wrote: why hide it? I haven't heard of an ISP caring about multiple computers hooked through a router in like 4 years. Almost everyone has a LAN these days. Last time I signed up with comcast (cable modem) they even offered to help setup your LAN.
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That's not the case here. It is stupid but we have just 2 broadband internet providers and the service is not very good but prices are high. Hopefully there will be more DSL providers in the future but currently it's not the case. Allen Anderson wrote: why hide it? I haven't heard of an ISP caring about multiple computers hooked through a router in like 4 years. Almost everyone has a LAN these days. Last time I signed up with comcast (cable modem) they even offered to help setup your LAN.
ouch, that sucks then. We have so much competition from multiple broadband providers here that prices are low and they keep offering more. One of the reasons I like living in a larger city with good internet options.
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James R. Twine wrote: you appear to be using CodeProject, Amazon and Noggin all at the same time! I can browse using multiple screens, use P2P apps, etc at the same time on one machine. Top 10 Geek Resulutions: 5. To decipher what that big room is, which has the blue ceiling and poor climate control.
Uh, obviously, but it would be the combination of traffic from different sources like that might make it look like something is up. Granted, it would be a little difficult to be certain using that information, but the OP asked about what is possible, not what is easy. Peace! -=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
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