1
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Log on back once again.

2
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Now we're in the holes two holes layer or the transport layer could be interchangeable either one.

3
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We just came from the application layer.

4
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Now for calls on the host holes layer VCP this is a connection oriented protocol.

5
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Why.

6
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Because before it communicates to its destination labor device node it will create a virtual circuit

7
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and say Hey are you ready to receive information from me.

8
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Yes I am ready to receive information from you.

9
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OK on what to say you get two.

10
00:00:48,230 --> 00:00:51,480
OK I acknowledge that you sent me to my.

11
00:00:51,790 --> 00:00:53,420
Please send me another Mike.

12
00:00:53,850 --> 00:00:56,430
OK I will send you another bite.

13
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Did you get it.

14
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Yes.

15
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Well you know why I think we can increase the window size.

16
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And maybe you get a little bit more OK.

17
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Go ahead and see what I'm saying.

18
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Is not good for us for a little dramatization here.

19
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Are you going to say what's going on.

20
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I would use the analogy with the TZP eat all the TCAP through a handshake.

21
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I got to draw taking all boxes.

22
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And the guy on the ground OK got too rough and tough guys out there and they're all gone.

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Hey here we go one.

24
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He's got to go.

25
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Come on.

26
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Whoa.

27
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Come on.

28
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Go.

29
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I say throw toward it.

30
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I'm throwing all the time.

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So there I go lounging there talking back and forth to each other how much they can handle.

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And that's what the CCP does.

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OK.

34
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It says I'm ready to receive the boxes they are sending me.

35
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OK.

36
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OK here I go.

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So are there any acknowledgement or negative.

38
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Hey listen I didn't get that last you Sammy is on the ground.

39
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I hope he doesn't go out.

40
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OK.

41
00:02:02,910 --> 00:02:07,720
So it's ok I'll resend it or you can reset the box but it will send a packet.

42
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OK.

43
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So that's what's going on is a constant communication that's going on to making sure that the packets

44
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are getting there.

45
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There are sequins.

46
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So when it gets to the other side they can put them back in order again because when everything gets

47
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broken up as is going down the or OCI or least one down the TV when everything is broken up.

48
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And each Lear has its own specific recall their unit or information that's going to put on there.

49
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So I want to get the other side and we have put everything back together.

50
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But TZP Yes it is a connection oriented protocol.

51
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All right.

52
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And it's known as the next year around it because it establishes a connection or a virtual surrogate

53
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with the destination device.

54
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It is full duplex.

55
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I cannot guarantee a reliable accurate but establishing all these terms and conditions in addition to

56
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error checking.

57
00:02:59,860 --> 00:03:05,960
The problem with that because it does all this is that a lot of overhead.

58
00:03:06,250 --> 00:03:07,560
It's a lot of work.

59
00:03:07,940 --> 00:03:12,620
Doesn't mean we're not going to use it just better get bigger pipes or mean bigger pipes.

60
00:03:12,620 --> 00:03:15,260
I mean you know cut six and what have you.

61
00:03:15,270 --> 00:03:16,030
You go a bit.

62
00:03:16,160 --> 00:03:19,890
Gigabit Ethernet tengah the all that you know all this stuff.

63
00:03:19,940 --> 00:03:30,900
So bugger's TCAP is what everyone is using Matalan a little bobble full duplex air one troubleshooting.

64
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OK.

65
00:03:32,070 --> 00:03:36,970
All right then some switches come in today.

66
00:03:37,330 --> 00:03:44,750
I have tubeless set have Dubus y OK.

67
00:03:45,010 --> 00:03:48,020
We're using no less than five.

68
00:03:48,620 --> 00:03:51,280
Five concern and receipt.

69
00:03:51,570 --> 00:03:52,770
OK.

70
00:03:53,360 --> 00:03:59,050
It has the wires or pairs to to send to receive.

71
00:03:59,470 --> 00:04:00,560
Come on.

72
00:04:00,760 --> 00:04:04,870
I make sure you don't have a duplex mismatch.

73
00:04:05,110 --> 00:04:15,130
Make sure that your switches were there to alert the I and your routers their interfaces are running

74
00:04:15,190 --> 00:04:17,100
at full duplex.

75
00:04:17,350 --> 00:04:18,280
All of them.

76
00:04:19,580 --> 00:04:26,640
Because if not what's going to happen you're going to have a duplex mismatch and then who cares if you're

77
00:04:26,650 --> 00:04:28,370
running TCAP.

78
00:04:28,430 --> 00:04:29,440
OK who cares.

79
00:04:29,440 --> 00:04:33,480
There you have catsuits because now we're going to run into problems.

80
00:04:33,480 --> 00:04:38,440
We're going to run slower because that's what we're going to have to he's running full Bernhardi money

81
00:04:38,440 --> 00:04:40,470
half what we really want the source be.

82
00:04:40,610 --> 00:04:47,010
We're going to wait to get the information and then once I receive and I look at it again knowledge

83
00:04:47,050 --> 00:04:48,130
then I'll send it back.

84
00:04:50,430 --> 00:04:51,080
No.

85
00:04:51,300 --> 00:04:59,290
So please to avoid any kind of Duplaix makes Miss lache or mixed batch whatever mismatched mismatch.

86
00:04:59,580 --> 00:05:00,340
Okay.

87
00:05:00,570 --> 00:05:02,700
And also speed the bandwidth.

88
00:05:02,700 --> 00:05:03,850
Make sure the bandwidth is correct.

89
00:05:03,850 --> 00:05:06,850
OK sure the bandwidth is correct.

90
00:05:07,260 --> 00:05:11,400
They're both We're in the same type of bandwidth on your interfaces that will allow us you don't have

91
00:05:11,400 --> 00:05:13,040
a bandwidth mismatch.

92
00:05:13,300 --> 00:05:14,060
OK.

93
00:05:14,490 --> 00:05:20,550
So that is very important because if he does run a full duplex it doesn't make any sense for your devices

94
00:05:20,890 --> 00:05:24,360
or your interfaces you'll be running.

95
00:05:24,690 --> 00:05:27,900
Great whole away from.

96
00:05:29,240 --> 00:05:36,390
Now we go to UDP your unit here basically the scaled down economy.

97
00:05:36,390 --> 00:05:42,240
I like that economy model of TZP which is why you can be sometimes referred to as a temp Oracle.

98
00:05:42,340 --> 00:05:47,090
Basically you he doesn't create any kind of virtual Soroka doesn't do any kind of sequencing.

99
00:05:47,300 --> 00:05:52,320
OK there is no windowing or anything like that.

100
00:05:52,390 --> 00:05:54,960
So it just sends it to the ATP.

101
00:05:55,000 --> 00:06:01,180
I said I believe I said earlier that in the end as you just both depending on what you're using what

102
00:06:01,180 --> 00:06:06,800
you're doing I should say you to be quick to just send it.

103
00:06:07,270 --> 00:06:09,450
It's like the guy in the trough.

104
00:06:09,700 --> 00:06:11,320
I need to throw him off.

105
00:06:11,510 --> 00:06:12,860
Hobi is waiting for it.

106
00:06:13,060 --> 00:06:21,260
OK he's just tossing it back there and he's getting ganyan years on the go catch garbled data.

107
00:06:21,640 --> 00:06:27,260
That could be a possibility and he's somebody that e-mailing him suddenly have an on or it's just photo

108
00:06:28,260 --> 00:06:28,890
OK.

109
00:06:29,100 --> 00:06:32,970
So UDP is used for certain things.

110
00:06:33,230 --> 00:06:34,040
OK.

111
00:06:34,240 --> 00:06:41,200
But now for him imagine that having TCAP IP for the Internet you have UDP IP you may get to Google you

112
00:06:41,230 --> 00:06:42,710
in the not.

113
00:06:42,820 --> 00:06:43,310
OK.

114
00:06:43,580 --> 00:06:47,410
So yes it is to consider the protocol.

115
00:06:47,440 --> 00:06:52,180
It doesn't have more bells and whistles no sequencing or virtual circuit and you could have Gorbal data

116
00:06:52,210 --> 00:06:56,480
but hey it's their DNS does use it as part of the protocol.

117
00:06:56,500 --> 00:06:57,370
So no.

118
00:06:57,790 --> 00:07:02,480
So here are as a comparison right.

119
00:07:02,530 --> 00:07:08,850
This is the sequence UDP not sequence TZP is reliable unity.

120
00:07:09,060 --> 00:07:10,220
Not really.

121
00:07:10,540 --> 00:07:18,470
The CB craze virtual circuit or connection oriented UDP is actually less because it doesn't do what

122
00:07:18,670 --> 00:07:20,420
for universal target.

123
00:07:20,580 --> 00:07:20,900
OK.

124
00:07:20,910 --> 00:07:22,640
It doesn't grab virtual surrogate.

125
00:07:22,890 --> 00:07:24,380
Yes it has overhead.

126
00:07:24,600 --> 00:07:25,500
OK.

127
00:07:25,790 --> 00:07:31,600
If you're doing your bagging on before Iowa as you backing up your your server config or so my dad or

128
00:07:31,710 --> 00:07:34,990
you know some bogus information shuttling back and forth.

129
00:07:35,020 --> 00:07:36,560
OK.

130
00:07:36,800 --> 00:07:38,330
TZP you have acknowledgements.

131
00:07:38,490 --> 00:07:41,040
No announcements on UDP.

132
00:07:41,100 --> 00:07:43,170
Our window for Logan drop.

133
00:07:43,230 --> 00:07:45,250
Yeah forget about that.

134
00:07:45,320 --> 00:07:49,770
UDP doesn't have none of that at all.

135
00:07:49,790 --> 00:07:50,510
All right.

136
00:07:50,640 --> 00:07:54,100
Here are the port numbers that we need to understand.

137
00:07:54,300 --> 00:07:54,890
OK.

138
00:07:55,050 --> 00:08:01,240
And we know these are well-known ports that we really need to know especially like telnet.

139
00:08:01,700 --> 00:08:02,410
OK.

140
00:08:02,700 --> 00:08:10,650
As MCP or I got only 23 hours into B-25 18 to be 80 to be 20 21 one listens What are signs to if he

141
00:08:10,650 --> 00:08:12,340
asked for for three.

142
00:08:12,450 --> 00:08:17,830
So age 22 pop on 10 A.P. 123 math version 4.

143
00:08:18,180 --> 00:08:19,210
Don't get confused.

144
00:08:19,390 --> 00:08:23,700
I am at Version 4 or I'm at 4 143.

145
00:08:23,800 --> 00:08:24,480
OK.

146
00:08:24,810 --> 00:08:32,050
Then for you that's TCD for you to be or look as an MP we're grabbing all the network information.

147
00:08:33,170 --> 00:08:34,120
161.

148
00:08:34,470 --> 00:08:43,730
The A.P. 69 DNS you worth as UDP which really should be on both OK.

149
00:08:43,750 --> 00:08:48,980
They are all depends what it's doing 53 in the movie that's for a party.

150
00:08:49,050 --> 00:08:50,440
Should be 67.

151
00:08:50,720 --> 00:08:56,050
Now we need to learn if we can memorize these parts and you can learn these ports Hellgate.

152
00:08:56,070 --> 00:09:01,270
This is this is is this is way great for us or vacation purposes will be great.

153
00:09:01,380 --> 00:09:03,280
We're troubleshooting pursers purposes.

154
00:09:03,390 --> 00:09:09,870
When you're on your firewall OK or you're creating Thurm policies you want to block certain imports

155
00:09:09,870 --> 00:09:11,670
you want an offshore import.

156
00:09:11,670 --> 00:09:17,800
If you use the FSA to why do you have toll and open calls it OK.

157
00:09:17,970 --> 00:09:24,320
And there's one thing that you're not using code and using is close as you can OK.

158
00:09:24,490 --> 00:09:33,410
So for security purposes if you're using a port closing OK close it doesn't need to be opened because

159
00:09:33,410 --> 00:09:38,430
that is a door into your will that you don't want.

160
00:09:38,900 --> 00:09:41,560
But anyway this is your host of host last.

161
00:09:41,630 --> 00:09:43,770
These are all transport layer.

162
00:09:43,780 --> 00:09:44,300
All right.

163
00:09:44,420 --> 00:09:49,820
So this is what goes on that particular air is this is going to be more than.