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| Thread ID: 61185 | 2005-08-27 08:02:00 | Blocking IP form a website | noone (22) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 384115 | 2005-08-28 17:22:00 | Thats your internal IP - not the outside one your ISP assigns you. They tell you that in case its gotten itself in a tangle and is not finding your router. Thanks...now that is something new I learned today...again, TY! ;) |
SurferJoe46 (51) | ||
| 384116 | 2005-08-28 22:19:00 | It might your MAC address they use to block you (which cant be changed.............. Easily ;) )Time to stop nodding my head knowingly when i don't know.... What actually is a MAC address? | personthingy (1670) | ||
| 384117 | 2005-08-29 02:31:00 | What actually is a MAC address?Basically it is a number your ethernet port has, every one in the world has a different one. They are allocated by a governing body IEEE to the manafactures of these network ports. They will eventually run out of numbers to asign and will have to come up with something else. info here (http://standards.ieee.org/) |
Rob99 (151) | ||
| 384118 | 2005-08-29 03:00:00 | Can a webserver actually see your MAC address? I thought that data was used a couple of layers on the OSI model below the layer webservers use. Therefore becoming transparent to a webserver. What usually happens with DHCP is that the server has a list of IP addresses it can give out. say 111.222.333.1->50. Most DHCP servers just give these out in order, so the first client gets 111.222.333.1, the second 111.222.333.2, etc. However some DHCP clients (PCs/routers/whatever) ask for their old IP address back when they connect to the DHCP server again. Most servers will give it to them unless it has already been given out. Although some DHCP servers told the clients *must* rotate IP addresses. So a router->dhcp server conversation would go something like this Router:I had 111.222.333.27 last time, can I have it again? Server:Hmm.. lets see, no noone else has it, it's all yours. or Server:Hmm.. lets see, dave already has it now.. have 111.222.333.41 instead or Server:Hmm.. lets see, no, the admins say I have to change your IP address every 2 hours, so here is 111.222.333.41 instead. So in summary, *IF* you are on DHCP, not a static IP, leaving your router off for a while will most likely let someone else get your IP address to force a change. -Qyiet |
qyiet (6730) | ||
| 384119 | 2005-08-29 03:02:00 | Hmmmmmmmm.....did everybody say this was a dead topic and not interesting?... Hmmmmmmmmmmm..again. |
SurferJoe46 (51) | ||
| 384120 | 2005-08-29 04:26:00 | MAC addressing is not assigned by a server but rather hard coded into a chip. There are ways of whats known as spoofing an MAC Address but Jen may get upset if I said any more on the that particular topic | beama (111) | ||
| 384121 | 2005-08-29 05:03:00 | MAC addressing is not assigned by a server but rather hard coded into a chip. There are ways of whats known as spoofing an MAC Address but Jen may get upset if I said any more on the that particular topicThere are also valid (legal) reasons why someone would want to hack the ARP table ... I attended a very interesting presentation on this topic, and it was demonstrated just how easy it was to spoof a MAC address and what the consequences of this was. Unless your computer is a standalone sysem (not ever networked) and never accesses the internet, nothing is secure. :) |
Jen (38) | ||
| 384122 | 2005-08-29 06:02:00 | But a web site can't know the MAC address of a client, unless the client is on the same network. There is only room for one destination MAC address in a TCP packet. The destination is changed at each router to point to the next host in the route. The MAC address of the client is inserted in the packet by the last router to handle the packet, on the basis of its ARP table. That's how packets are routed. | Graham L (2) | ||
| 384123 | 2005-08-30 05:58:00 | Graham is correct about the MAC (Media/Medium Access Control) Address, it's only seen within your own LAN. Most networking devices have one. A lot can be told from the first 3 bytes of the MAC address, which identifies the manufacturer of your network device. As with blocking IP from a website, definitely a bad idea. Being able to find a unique identifier would be the best way of blocking in my opinion, but usually blocking the email address is viable too, since it requires the user to sign up for a new email address just to get back in, eventually they will tire (well hopefully). Cheers, KK |
Kame (312) | ||
| 384124 | 2005-08-30 10:23:00 | Graham is correct about the MAC (Media/Medium Access Control) Address, it's only seen within your own LAN.So just what is sent is a standard transaction between server and client apart from the obvous things such as requests for a page etc? I've allways wondered exactly how a data manages to arrive at the correct client int a LAN. Is the local machines private IP address somehow added to the data sent out? |
personthingy (1670) | ||
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