Say i have a machine that has the public ip 1.1.1.2, and it is connected to the internet via another machine, 1.1.1.1 . How do routers out on the internet know how to get packets to 1.1.1.2? I imagine on some level it's hierarchical, but looking at a traceroute i can't see any kind of universal h...
Actually I tried to edit my chat post...my real question was in regards to...do we have a meta question that covers things like "how does x work?"/learning questions. Meaning is it cool to ask such questions? Could I ask "I'm confused as to how the FTP protocol works? Can someone explain it?"
"FUCKING SUBNETS - HOW DO THEY WORK?!" is a pretty common question from junior admins -- it makes sense for us to have the canonical subnetting question
"Herp Derp how does HTTP work someone walk me through the protocol!" is a question that is best answered by a link to rfc-editor.org and a smack
Specifically about routing, I think we should have a canonical question about routing similar to the one about subnetting (if we don't already)
Perhaps a routing one will show up on the NE beta site that we can link to...I'm not a BGP expert. Technically you'd need a "How does internal routing work?" and "How does external/internet routing work?"...at least for readability.
yup. If you can find a better routing question (or want to write a good answer about Routing for him) I think it's worth adding to the list of canonical questions
@TheCleaner true - but a high level overview of routing (without getting as deep as we did for subnetting) would be useful
Maybe I'll write something up if I get some downtime today
The root of the issue is he doesn't understand IP addressing
I'll give you an example. Many years ago I was curious about IP addresses so I wanted to know what different folks had for an IP address. i was trying to determine the pattern. The problem was....there wasn't a pattern per se I could recognize
I don't think that's the issue. I think he knows about subnets and default gateways, but the Internet isn't just one giant hierarchy with default gateways. He's really asking about RIP, OSPF, ISIS, and BGP
You end up with a company with 2 switches and 30 users with a /8 subnet internally connected to a cable modem and 1 external IP...just because. No harm no foul I guess...could be worse if they chose 192.168.1.x/24 only to find that their VPN clients were going to be screwed until they created a separate subnet for them.
@ChrisS Posted a youtube video link for him on BGP also
@ChrisS Also, if he understands it why would he pose the question this way, "Say i have a machine that has the public ip 1.1.1.2, and it is connected to the internet via another machine, 1.1.1.1"
I never realised that was allowed for IP v4, just for IP v6, but...
ping 127.1
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Ping statistics for 127.0.0.1:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
Control-C
^C
@Travis I want to murder the narrator of that video who is apparently in love with the sound of his own voice talking about think nobody ever cares about.
@Hennes -it's allowed for any IPv4 (pinging in that weird octet way)...it just differs based on what you put in...for instance...
Z:\>ping 127.9999999
Pinging 127.152.150.127 with 32 bytes of data: Reply from 127.152.150.127: bytes=32 time<1ms TTL=128 Reply from 127.152.150.127: bytes=32 time<1ms TTL=128 Reply from 127.152.150.127: bytes=32 time<1ms TTL=128 Reply from 127.152.150.127: bytes=32 time<1ms TTL=128
Ping statistics for 127.152.150.127: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
Pinging 127.0.0.1 with 32 bytes of data: Reply from 127.0.0.1: bytes=32 time<1ms TTL=128 Reply from 127.0.0.1: bytes=32 time<1ms TTL=128 Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Ping statistics for 127.0.0.1: Packets: Sent = 3, Received = 3, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms Control-C ^C U:\>ping 127001
Pinging 0.1.240.25 with 32 bytes of data: PING: transmit failed. General failure. PING: transmit failed. General failure.
Using the Windows interface
Open Active Directory Domains and Trusts.
In the console tree, right-click the domain that contains the trust that you want to validate, and then click Properties.
On the Trusts tab, under either Domains trusted by this domain (outgoing trusts) or Domains that trust...
I think we need a "like" button on SF. I like some of the posts because they make logical sense but I don't know if they're true so I don't want to upvote
Hi i have 2 virtual cisco apps on 2 seperate servers that are HBA connected to a vnx datastore – when i lose the connections to the datastore my LUN becomes inactive on the corresponding host . Is there a way I can set up an alert so that if the LUN becomes inactive then it will close down the co...
@freiheit I'm just not keen on wearing the StackExchange branding out and about. Were it site specific I would totally wear it as just a shirt. Those things are really comfy, though, and keep their color pretty well.
@freiheit I wasn't all that active when the care packages went out, I think I was on the 4th page at that time. I do have a Sec.SE shirt. Pretty cool design on that one.
@MDMarra Ah...yes...and no (in the near future). Currently homedir is set as Z...but Z will go away in two weeks to be replaced by SkyDrive Pro with Office 365 E3.
I really need to stay out of SU... HP Compaq 610 Battery not charging ...accepted answer was from the guy that posted... So, apparently it was the battery....
So I just emailed the company back who wants me in for an interview for the VMware/MS Engineer consultant position. I'm sort of interested - but I know my tattoos/lobes will most likely be a reason to not get the job. I basically told them up front to see what they say
Using the Windows interface
Open Active Directory Domains and Trusts.
In the console tree, right-click the domain that contains the trust that you want to validate, and then click Properties.
On the Trusts tab, under either Domains trusted by this domain (outgoing trusts) or Domains that trust...
