HRWiki talk:ProxyBlocks

From Homestar Runner Wiki

Revision as of 04:37, 16 November 2005

FAQ

• Some of the Whois pages contain more info than others. Look for inetnum or NetRange or something similar.
• Some of the Whois pages already have listed the netmask. Look for CIDR.
  • These two instances are generally only found on the longer pages. Most pages, however, only supply the low and the high, and are therefore very short in length.
• If you get stuck, perhaps someone on the IRC channel is around to help.

Proxy Listing

Hi Dot com, I have a question: I was doing the very first node and the netmask returned:

netmask 12.173.164.0-12.173.164.255
12.173.164.0/255.255.255.0	12.173.164.0/0.0.0.255	12.173.164.0/ 24

I had to double check, but I indeed typed in the correct range. When following the example, the IP range without the netmask makes no sense. With the netmask it makes a little bit more sense but it still makes no sense. So... a) is this correct? b) do you guys need the netmask? c) if this affects other wiki's are there other groups doing the same thing? Are they "inter-collaborating"? --Stux 03:58, 16 November 2005 (UTC)

What doesn't make sense about it? Looks fine to me. The netmask is unnecessary, as it's implied by the /24. --Jay (Gobble) 04:00, 16 November 2005 (UTC)

Maybe my terminology was incorrect, but the part we need is 12.173.164.0/ 24, with the slash and the two-digit number. — It's dot com 04:04, 16 November 2005 (UTC)

Edit Conflict Yeah but the range is from 12.173.164.0-12.173.164.0 implying one IP address? I am not too familiar with the last two notations: 12.173.164.0/0.0.0.255 and 12.173.164.0/ 24 and I wanna make sure i'm not missing anything. --Stux 04:05, 16 November 2005 (UTC)

I'm not totally sure what the first two numbers and masks mean, but what we're looking for is the last one, the one bolded above. — It's dot com 04:07, 16 November 2005 (UTC)

The mask is supposed to be a logical AND of the binary representation of the numbers, the first will return only the first 3 numbers, and the second only the 4th number. --Stux 04:09, 16 November 2005 (UTC)

Edit Conflict See Lapper seems to be getting different numbers: 12.173.164.0 || 12.173.164.255 is what he's (what seems to me correctly) reporting. --Stux 04:08, 16 November 2005 (UTC)

Also edit conflict'd The mask stuff (255.255.255.0, etc.) isn't important here. The actual range is the part where it says "12.173.164.0-12.173.164.255". What the /24 terminology means is that 24 bits remain the same in all addresses in the range. Each part of an IP address has eight bits, so this means that the first three parts will be the same for all addresses. The last eight bits (the entire fourth part) can be anything - but no part in an IP address can be larger than 255 (the largest number possible with eight bits.) If it was, say, /25 (and the fourth part was still zero) then only 7 bits could change, so the range would be 12.173.164.0-12.173.164.127, for instance. (This makes a lot more sense if you've taken several years of computer science, lemme tell ya.) --Jay (Gobble) 04:11, 16 November 2005 (UTC)

Makes perfect sense, but again if you notice, the netmask calculator isn't giving me a 0-255 range it's giving me a 0-0 range. That's what I want to clarify. --Stux 04:14, 16 November 2005 (UTC)

What? It sure looks like it did from what you posted above. First line: "netmask 12.173.164.0-12.173.164.255" --Jay (Gobble) 04:20, 16 November 2005 (UTC)

No no, "netmask 12.173.164.0-12.173.164.255" was the input shown on the top of the page, the output produced was the line just below it. With the 0-0 range. --Stux 04:24, 16 November 2005 (UTC)

Must be a different site. Anyway, the other terminology has a meaning, but it's not really all that important here (the 255.255.255.0 represents the bits that remain constant, and the 0.0.0.255 represents the variable bits.) --Jay (Gobble)

No actually i got it from the same site that was provided in the link, it does that for all class C 0-255 thingy's. --Stux 04:35, 16 November 2005 (UTC)

Different format

Hey what about these... which number do you want? I am assuming that the range you want is 61.197.218.176 - 61.197.218.183.--Stux 04:12, 16 November 2005 (UTC)

Yes, that's right. — It's dot com 04:14, 16 November 2005 (UTC)

Cool thanks! --Stux 04:16, 16 November 2005 (UTC)

And, BTW, the proper notation for the range would be 61.197.218.176/29, if I did my math correctly (I seem to have misplaced my calculator...) --Jay (Gobble) 04:18, 16 November 2005 (UTC)

That's what I got! BTW thank you for the explanation above, it made things a lot clearer Jay. --Stux 04:20, 16 November 2005 (UTC)

What about this one? It has a 24-bit range at the top (62.2.202.0 - 62.2.202.255) and lists 62.2.0.0/16 way at the bottom and nothing more. --Stux 04:23, 16 November 2005 (UTC)

The first part (62.2.202.0/24) is the one we need, I think. It's a subdomain of 62.2.0.0/16, but I don't think we need to block the parent domain. --Jay (Gobble) 04:24, 16 November 2005 (UTC)

Noted! Sorry I keep pestering you like a little child... this one only seems to list its parent domain 61.232.0.0-61.237.255.255. --Stux 04:27, 16 November 2005 (UTC)

Not all domains are broken up - I think the #1 problem there is that we can't block entire domains with fewer than 16 constant bits in one go IIRC (that is, we can't block 61.232.0.0/13, but we could block each of the 16-bit domains individually... there would only be a few of them. Also, the second one looks like it should be 61.239.255.255, but that's not your fault.) --Jay (Gobble) 04:30, 16 November 2005 (UTC)

And we probably won't be blocking anything bigger than /24 (by that I mean not /23 or below). But this is a good starting point. — It's dot com 04:37, 16 November 2005 (UTC)