TCP/IP thread
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TCP/IP thread
>>55192439
K. What about it?
>>55192480
sitches don't work with packets
>>55192480
Frames bru
>>55192439
This is now a MILNET thread the rest of Arpanet get out.
>>55192563
This is now a SIPRnet thread. Everyone else get out.
>>55192578
"What did you do in the army dad"
"Shitposting with S6"
>>55192559
you use oak or pine for them frames senpai?
>>55192439
Anyone here familiar with using Quagga for Loonix OSPF?
>>55192439
Would you like a TCP/IP thread?
>>55192439
Is it useful to learn about this if interested in network security?
>>55192741
oh wait... youre serious?
>>55192741
To learn tcp/IP.... there's nothing to learn it's literally that.
>>55192439
What is the best source to learn about TCP/IP?
>>55193195
RFC's.
>>55193278
Thank you.
I had no idea this was a thing.
>>55192741
No. ICMP is used for hacking and DDOS so you should learn about it instead.
>>55192837
read 600 pages of Internetworking With TCP IP and say that again pleb
or
just shut the fuck up if you dont know shit about networks
which version?
>>55193195
Internetworking With Tcp/Ip: Design, Implementation, and Internals June 1994
Douglas E. Comer and David L. Stevens
its pretty much the best starting point to networking and a good read in general
Does tci/ip even exist anymore? Last time I saw it was in a mac os 7 or 8 when configuring my dial up modem. Now you can just plug an ethernet cable into the back of a pc or type in a WiFi password and you get internet.
Anyone here knows how slow-start works?
I mean not just the basics of it, i get the idea behind it, but i have to do homework about slow-start and this shit is driving me insane.
>A network that uses internet technology is called an "internet".
Okay. Now give me an internet.
>>55193509
Internetworking is the practice of connecting a computer network with other networks through the use of gateways that provide a common method of routing information packets between the networks. The resulting system of interconnected networks are called an internetwork, or simply an internet. Internetworking is a combination of the words inter ("between") and networking; not internet-working or international-network.
>what you are referring to as "internet" is in fact a "internetwork"
What are the top flaws of TCP/IP in your opinion, /g/?
>>55192559
>>55192527
Frames contain packets
webshits I swear
>>55193616
Window negotiation is annoying.
>>55193470
you're posting on this bord right now using tcp over ip
i mean for real familia
i hope this is b8 to make macfags look bad because this is exactly what makes people hate macfaggotry
anyone here implemented their own stack?
is ipv6 at 90%+ deployment yet or what?
>>55193616
IP-fucking-4
>>55193470
Let me introduce you to the concept of abstraction via layering
>>55193768
It's at 90% undeployment.
>>55192888
close enough
https://sourceforge.net/projects/gns-3/
>>55193616
It is mainly being used by retards that don't even know what TCP/IP is.
>>55193832
so is your mom
>>55193470
u wot m8
how do you think internet works?
>>55193616
IP
> NAT fucking up end to end principle (not even IPv6 is save from this)
> Fragmentation allowed / flag based
> IPv6 deployment is fucking slow
TCP
> no authentication on packet level
> congestion algorithms are based on limited bandwidth being the only source of packet loss
> no countermeasures against port scanning in the standards
>>55193403
I'm Cisco certified CCENT. You read a book and you think you know anything? You thought
>>55193768
Mostly in Europe there's no need for that many numbers in the US also ccent here. Also inb4 muh private ips
>>55192439
comer a best. go boilermakers
>>55192439
>TCP/IP
No it's just IP. Not TCP/IP. Go away stallman
>>55194922
You just need to read a book to be cisco certified to
>>55197055
nah i did it and u need to know commands and have your own equipment a few switches etc to get it all understood
>>55194922
>CCENT
>Associate level
Get out of here with your piss poor half and half CCNA certification.
I could tell you a UDP joke but I'm not sure if you'll get it.
>>55197197
AHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA
>>55194899
>IPv6 deployment is fucking slow
good
IPv4's limited pool gives a bit more privacy
with IPv6, every device (and every person as well) can be given a unique IP that could be potentially used for identifying and tracking
>Not talking about Superior Bukkake UDP
>2016
>>55197304
that a big laugh
>>55197326
Well, if you want to look at it that way, then on one hand it takes away some of your privacy and on the other it gives you new possibilities for privacy.
IPv6 addresses are handled to machines in ranges. So a single machine won't usually have a single IPv6 address. It's the reverse problem compared to that with IPv4 and NATs, as there will be problems with identifying if two IPs are pointing to the same machine.
Also, there are techniques in the standard to enable changing the IP of your node, so you can hide the fact that your node is involved in different transactions by using different addresses for them.
And then there's the geolocation issue. In IPv6 it's harder to store geolocation data, simply because of the enormous address range.
Besides, be it v4 or v6, there are better ways of tracking someone rather than by IPs, as people tend to change networks.
>>55193644
annoying but necessary
>>55193616
ipv6 toolkit, thc ipv6 attack toolkit
those are good starting places to learn all the problems of worldwide networking based on packet switching
insecure protocol that doesn't have any decent security measures
>>55192741
These are the absolute basics.
Your question is basically: "is it useful to learn math if interested in theoretical physics?"
>>55192527
>>sitches don't work with packets
>His switches aren't layer 3
>>55197197
OP: read the specification (RFC). Everything you need to know is there and it's not too hard to follow.
As to everyone saying TCP is bad, i'd like to see you improve on it. It's pretty damn solid all things considered
>>55193616
This shit has been around for ever and we still can't agree on the details. TTL starts at 256 Come at me fags.
Needs to be replaced with some better stuff.
Like I dunno something https://en.wikipedia.org/wiki/Future_Internet
How would the internet look like, if it was designed today without looking back at legacy issues and similar restrictions?
>>55199829
computers would be able to talk to each other across the entire planet
>>55199829
For every protocol, you would need a government permission before opening a connection.
lol always funny to see plebs talk about shit they have no idea about. have u guys ever hacked? thought so faggots.
>>55197197
Tell me over TCP and I'll get it in a few hours
Reminder to /g/ that IPv4 is
D E P R E C A T E D
E E
P P
R R
E E
C C
A A
T T
E E
D D
>>55203593
IPv4 isn't going anywhere. Businesses and organisations will be using it on their private networks for decades to come still.
>>55193195
ping your printer
>>55206467
Spotted the NEET, everyone!
>>55192439
SYN
>>55206535
ACK
>>55193577
So is Internet a noun or a verb?
>>55206514
No, NEETs are degenerate garbage.
But so are certfags that got cucked into netadmin jobs by networking corps and now make shit pay and post in irrelevant threads on /g/.
>>55206535
>>55206567
> /r/tcpip, 5 subscribers
>>55206588
I'm a neet but my dad works at Cisco. He makes 250k a year
>>55206615
Working at Cisco is different than getting a CCNA and becoming tech support at irrelevant company X. Good for your dad.
Cisco bought out OpenDNS here and pay similarly well for their engineering positions.
>>55206467
>He's not a contractor that works whenever he wants
:^)
>>55206588
Yes, they're true degenerates. Unlike unemployed royalty like you.
>>55206790
Got me there. Probably should get into that eventually.
>>55206861
> royalty
> unemployed
Royalty's job is finding a way to coexist in a world with horrible degenerates like yourself without killing themselves.
>>55206923
here's one way
>>55206986
good call. stretch out your neck, please.
>>55192439
lol you can make a thread about drinking water and shoes and 15 neets will jump on your dick "WOW THOSE ARE SOOOO DEPRECATED WTF"
never change gee
>>55207031
Merciful Dr. Joseph-Ignace Guillotin was known for his careful care of royal necks like yours.
>>55207107
how the fuck do you drink shoes?
SYN
>>55207140
You have to think in german.
>>55207107
Exactly.
>>55207122
> Implying I'm royal scum
Nice meme
>>55207204
Pardon!
SYN
>>55208510
SYN ACK
>>55208544
ACK
>>55193195
TCP/IP Illustrated.
>>55208555
ESTABLISHED
>>55208592
DESIGNATED
>>55208632
SHITTING
>>55203593
I have a small business network. There is LITERALLY no reason for me to have IPv6 at all.
>>55208643
STREETS
>>55197914
For you
>>55199829
Ipv6 would have private ips
>Inb4 released the kraken
>>55199829
There would be probably some sort of a locator and identifier separation, for better or worse (privacy).
Can someone tell me why ipv6 is less anonymous? You can still NAT ipv6 addressees?
>>55211136
You can, but if ISPs won't be forced to do so then it won't matter. Besides it's not like NAT is a security measure.
People fear IPv6, because in theory everything you do in it could be linked directly to you, not just your ISP. I don't know how valid this point is though - supposedly there are some security measures.
>>55192439
three-way wankshake
>>55211321
It's not really valid, I doubt that ISPs will fix an address range permanently to you just because there are no limitations on address space anymore; they will still most likely lease entire subnets in the way they lease public IPs now because that's essentially their business model.
Also, behind a subnet lease, it will still be impossible to find out the identity of the host. Your ISP will use subnet routing to route to your gateway router (which would be an DSL modem/WiFi access point/router/firewall combo just like today), and only your gateway router (which assigns addresses to each host on the LAN) will know exactly who the IP belongs to.
The big IPv6 scare here on /g/ is mostly caused by /g/ not knowing how IP actually works.
If anyone's interested, here's more on why NAT is not a security measure: http://blog.webernetz.net/2013/05/21/why-nat-has-nothing-to-do-with-security/
>>55211407
im afraid of ipv6 because ip is part of my job and i still havent bothered learning ipv6
>>55211472
It's way easier than IPv4. The header is simplified, the concepts are simplified. Seriously, if you already know IPv4 you can learn IPv6 by reading Computer Networks by Tannenbaum and looking into how mobile IP works and how stateless autoconfig works.
Why does STP still exist?
>>55211407
businesses do whatever is profitable. if ad companies like Google pay off ISPs to make users more easily identifiable, they probably will.
>>55211585
Because L2 switches still exists.
>>55211598
You're already identifiable for Google based on cookie tracking. In many countries (I guess other than the US?), ISPs are actually banned by law from giving personal information out to companies.
>>55211639
ISPs don't have to give out any personal information. Google can mine that by themselves
>>55211700
>ISPs don't have to give out any personal information. Google can mine that by themselves
Yes, that was my point.
You're in no way anonymous even if you're behind NAT.
>>55211498
i probably can but its my nature to hate everything that's new
>>55211585
Because I can't afford a l3 switch so Cisco has only fueled my frugalness.
>>55211498
I hate working with it, ipv4 just seems to make so much more sense, probably because Ive been training with it
>>55211407
Why does it matter the subnets if my IP is tied to the device ? I'm confused on how Isps "lease" ? Im only a CCENT currently so im slightly autistic
>>55211713
well, but the situation is drastically worse for e.g. torrent users
>>55197115
>commands
essential
>your own equipment
not necessary (although practical), GNS3 + knowing what switch looks like is enough
>>55211799
>I hate working with it, ipv4 just seems to make so much more sense, probably because Ive been training with it
The vital parts are the same, some names/concepts are slightly different and the header is significantly simplified. That's essentially it.
>Why does it matter the subnets if my IP is tied to the device ?
From the subnet point of view? Nothing, IPs are tied to devices, that's how they work and that's routing based on subnet prefix works.
>I'm confused on how Isps "lease" ?
Similar to DHCP leases. They assign your router a (public) IP for a limited amount of time. Then that time is expired, the router requests a new lease from the ISP.
Can anyone explain how hybrid switchports fucking work? Haven't found anything online that made sense to me.
How the fuck does the switch know what VLAN a packet (frame for you autists) originated from if the port it came in on is an access port for multiple VLANs?
>>55211856
Do ISPs in the states require you to connect via their own router? Or can you get an external IP on any device?
>>55211912
>Do ISPs in the states require you to connect via their own router?
Doubt it, but many offer their own DSL modem/router combo yes.
>Or can you get an external IP on any device?
IP you can, but DSL modem + whatever authentification they use (PPP+radius+MAC filtering+whatever) is harder.
>>55211971
Why would a modem without NAT need any authentication if all it does it convert the electrical signals to digital? I thought that was up to the computers/routers etc
>>55212043
>Why would a modem without NAT need any authentication if all it does it convert the electrical signals to digital?
Because your ISP/cable provider doesn't want anyone to just dig up a cable, connect to it, and use their infrastructure for free...
>>55211912
>Do ISPs in the states require you to connect via their own router?
No. But they may require you to use a modem they provide (or equivalent device like an antenna for a WISP or Satellite service provider).
My ISP doesn't require I use their equipment so all my home networking equipment is my own.
>>55211902
It's not a hybrid switchport. In Cisco terminology it's a vlan trunk. Access ports are for a single vlan and trunk ports are for multiple vlans to pass over.
So traffic going over an access port is "untagged". Traffic going over a trunk port is "tagged" with an 802.1q header (this lets the switch know what vlan it belongs to).
>>55212043
Literally what >>55212073 this guy said. Also some modems are going to have NAT depending on the service provider. Modern modems are more complex than just converting electric signals to digital.
>>55212094
>vlan trunk
No that's not what I'm talking about, I know what a trunk is.
Maybe it's called something different with other vendors, but I've seen it specifically with Comware and Dell switches.
>>55212137
I've only heard of hybrid switchports in reference to HP switches. But for that the hybrid is basically the same as a trunk.
In the case of HP when the hybrid port has tagged and untagged vlans all outgoing vlan traffic not already tagged is given the tag of the native vlan.
Could you give me a link with an example of what you're talking about? Also interested to learn something new.
>>55212137
never come across hybrid ports in the cisco world. I had to go and look it up - this guy explains it a bit. Skip to around 15mins
https://www.youtube.com/watch?v=2QOFNTF4nyU
>>55212364
>Could you give me a link with an example of what you're talking about?
That's the thing, I can't really find anything explaining it, even in official documentation. They have an example configuration that has 7 untagged VLANs on a single port (pic related), but I can't find any explanation of how it actually handles that. I guess I could run a packet capture and see how it looks.
>>55212390
That all made sense, but in the guy's example his hybrid port was only untagged on 1 VLAN, whereas according to documentation you can have a port untagged on multiple VLANs.
>>55192439
People still use this outdated shit? Is this India or something?
>>55197160
He's still more qualified than most viewing this board
>>55193771
Did you mean Ipv6?
Because it is a cancer.
>>55212479
So in the example you provide anything on vlan 1, 25, or 30 thats trying to get out to the network via that switchport is going to be tagged with the native vlan ID (which is 1 in the example you provided).
>>55212479
Dunno, it seems to be a rather esoteric feature of little usefulness. Can't find a satisfactory explanation anywhere
>>55197160
Even the CCENT is a lot of studying for people new to the field.
>>55212617
Just searched a bit more, I think the answer is that only protocol-based VLANs will do it.
>>55212716
And apparently can filter by mac addresses as well. Can't see this being used all that often, if ever.
So what about the BitTorrent privacy in ipv6? Wouldn't it make it super easy to track it's users?
How is this fucking thread still going. I stopped posting and you faggots are still rolling around in it like animals.
Go start a UTP thread, there is so much to discuss about it.
>>55212638
Thanks senpai, I'm going for my ccna soon, currently going to school for digital forensics and cyber security.
>>55211902
Access ports can only have 1 vlan
>>55212094
Then there is 802.1q encapsulation sub vlan routing
>End my pain
>Softly
>>55208586
>>55193440
Does CCNA cover this too?
>>55193278
Aren't these highly technical and advanced? Like used as guidelines for manufacturers?
>>55216233
CCNA is a certification, if you want enroll in the Networking Academy which is Cisco Networking. Take the Switching and routing I and you will learn everything basic networking level. Even non proprietary protocols and sheet. 10/10 would recommend. It even takes you through Labs on researching RFC's.
>>55193470
>>55216287
Thanks, anon.
>>55216339
Don't fall for the juniper meme gl anon
>>55216339
In the real world, having juniper experience is beneficial
>>55216418
Yeah when you work for a company that gets shilled
>>55192578
Sorry, you can't have a sipr thread on the same metal table as a nipr one.
Currently working on the CCNP, CCNA with 0 experience landed me a 60k base salary job while most people my age are still in college.
>>55216367
I disagree with this. Juniper is definitely a company to be keeping your eye on. The company I work for manages hundreds of millions of dollars worth in network equipment for it's customers, and slowly but surely they are switching most of the customer access layer switches from Cisco to Juniper. Though I would agree Cisco still holds the edge in core/distribution environments, Juniper is making it's mark and growing consistently
>>55216465
Congrats on the ccnp. You don't need to go to the conference for that right? Also I'm that nig
>>55216367
Im being a meme, juniper equipment is very good I have worked with it. Don't be taking it seriously. I know a college that is switching over to juniper. It happens alot companies switch back and forth between the two.
CCNA 60k? Not bad anon I'm taking my CCENT soon any tips?
>>55216509
my only advice is really really really understand everything, because otherwise you will have to come back to it and relearn for the CCNA and higher certs. the cert gets you the interview, the knowledge gets you the job.
>>55216534
How am I supposed to really really know everything I'm not even in college yet... like I get the gist for now, I mean why don't I just take both CCENT. Then I have my CCNA. I'll learn more Once I get the job or do internships? Also the best way to learn is through internships correct?
>>55216141
>end my pain
Why?
Sub-interfaces are easy to configure but kinda bandwidth inefficient. Better off using a multilayer switch
>>55216601
I browse /g/ do you really think I Can afford that?
>>55216612
they are like 50 bucks on ebay
>>55216591
internship for IT? lel just get a fucking helpdesk job dude. college for networking is a joke. you'll end up with some entry level job anyway. in that same 4 years you could have 4 years of work experience and a CCIE making an easy 100k/year given you live in the US
>>55192439
>2016
>not using UDP
>>55216642
Not going for networking. I'm going for Cyber Security and anti-terrorism
>>55216648
I like how this is just thrown around with no context or thought on which types of traffic benefit from either of the two. go back to studying for your A+, kiddo.
>>55216648
I don't get it.
>>55216612
You can find one on ebay. Also look into Mikrotik. They're cheap.
Most importantly, if you arn't actively pursuing a career in enterprise networking then why do you care?
>>55216684
It's still a helpful thing on a resume. I want to learn and expand my understanding further than my desired career path. It's a hobby and a passion of mine.
>>55216658
Have fun with your under water basket weaving degree
>>55216807
Literally autism. I've already been offered internships paid. Plus I've gotten offers from the department of defense for full rides if i promise 4 years of work to them. Then they can get me a interview at any company I want guaranteed. Don't act like your better, don't be salty you aren't doing anything with your life. You pretend like you know what you are doing and you know better. Keep on shitposting
>>55216872
Well, I mean. Cyber-security would be a networking degree though. I don't see how you could separate the two.
>>55216872
>this defensive over a meme degree
it's almost like you know it's a joke ;)
>>55216919
Separate the two? It's dealing with cyber crime and anti terrorism
>>55216926
I'm actually triggered, this has never happened.
>>55216944
>It's dealing with cyber crime and anti terrorism
If the field of study doesn't teach you networking how would you know what to secure? Do you just tell other people to go secure stuff or do you do the work yourself?
https://www.youtube.com/watch?v=PpsEaqJV_A0
Wouldn't it be easier to call it TC?
>>55219385
but that would just make it TC over I
who IPv6 here?
