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What is a list of RFC's I ought to learn for CEH?
I often see references to 'RFC xxx' in CEH questions - for example RFC 793 - and I had a look at some of them and there are thousands of them. Question is, in much the same way that there are 'common' Port Numbers (with services) and Protocols - is there a recommended list of RFC's that we should know?
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BuzzSaw
Member Posts: 259 ■■■□□□□□□□
791, 792, 793, 1256, and 1918 are a good place to start -
OptionsBuzzSaw
Member Posts: 259 ■■■□□□□□□□
Also, here is a straight copy from my notes. Its 's ICMP info sheet i used in my studies
ICMPTYPE NUMBERS
TheInternet Control Message Protocol (ICMP) has many messages that
are identified by a "type" field.
Type Name Reference
----
0 EchoReply [RFC792]
1 Unassigned [JBP]
2 Unassigned [JBP]
3 DestinationUnreachable [RFC792]
4 SourceQuench [RFC792]
5 Redirect [RFC792]
6 Alternate HostAddress [JBP]
7 Unassigned [JBP]
8 Echo [RFC792]
9 Router Advertisement [RFC1256]
10 RouterSelection [RFC1256]
11 TimeExceeded [RFC792]
12 ParameterProblem [RFC792]
13 Timestamp [RFC792]
14 TimestampReply [RFC792]
15 InformationRequest [RFC792]
16 InformationReply [RFC792]
17 AddressMask Request [RFC950]
18 AddressMask Reply [RFC950]
19 Reserved(for Security) [Solo]
20-29 Reserved(for RobustnessExperiment) [ZSu]
30 Traceroute [RFC1393]
31 DatagramConversionError [RFC1475]
32 Mobile Host Redirect [David Johnson]
33 IPv6 Where-Are-You [Bill Simpson]
34 IPv6 I-Am-Here [Bill Simpson]
35 Mobile Registration Request [Bill Simpson]
36 Mobile Registration Reply [Bill Simpson]
37 Domain Name Request [Simpson]
38 Domain Name Reply [Simpson]
39 SKIP [Markson]
40 Photuris [Simpson]
41-255Reserved [JBP]
Many ofthese ICMP types have a "code" field. Here we list the types
again with their assigned code fields.
Type Name Reference
----
0 Echo Reply [RFC792]
Codes
0 No Code
1 Unassigned [JBP]
2 Unassigned [JBP]
3 Destination Unreachable [RFC792]
Codes
0 NetUnreachable
1 Host Unreachable
2 Protocol Unreachable
3 Port Unreachable
4 Fragmentation Needed and Don't Fragment wasSet
5 Source Route Failed
6 Destination Network Unknown
7 Destination Host Unknown
8 Source Host Isolated
9 Communication with Destination Networkis
AdministrativelyProhibited
10 Communication with Destination Hostis
AdministrativelyProhibited
11 Destination Network Unreachable for Type ofService
12 Destination Host Unreachable for Type ofService
13 Communication AdministrativelyProhibited [RFC1812]
14 Host Precedence Violation [RFC1812]
15 Precedence cutoff in effect [RFC1812]
4 Source Quench [RFC792]
Codes
0 No Code
5 Redirect [RFC792]
Codes
0 Redirect Datagram for the Network (orsubnet)
1 Redirect Datagram for the Host
2 Redirect Datagram for the Type of Service andNetwork
3 Redirect Datagram for the Type of Service andHost
6 Alternate Host Address [JBP]
Codes
0 Alternate Address for Host
7 Unassigned [JBP]
8 Echo [RFC792]
Codes
0 No Code
9 Router Advertisement [RFC1256]
Codes
0 No Code
10 Router Selection [RFC1256]
Codes
0 No Code
11 Time Exceeded [RFC792]
Codes
0 Time to Live exceeded in Transit
1 Fragment Reassembly Time Exceeded
12 Parameter Problem [RFC792]
Codes
0 Pointer indicates the error
1 Missing a Required Option [RFC1108]
2 Bad Length
13 Timestamp [RFC792]
Codes
0 No Code
14 Timestamp Reply [RFC792]
Codes
0 No Code
15 Information Request [RFC792]
Codes
0 No Code
16 Information Reply [RFC792]
Codes
0 No Code
17 Address Mask Request [RFC950]
Codes
0 No Code
18 Address Mask Reply [RFC950]
Codes
0 No Code
19 Reserved (for Security) [Solo]
20-29 Reserved (for Robustness Experiment) [ZSu]
30 Traceroute [RFC1393]
31 Datagram Conversion Error [RFC1475]
32 Mobile Host Redirect [David Johnson]
33 IPv6 Where-Are-You [Bill Simpson]
34 IPv6 I-Am-Here [Bill Simpson]
35 Mobile Registration Request [Bill Simpson]
36 Mobile Registration Reply [Bill Simpson]
39 SKIP [Markson]
40 Photuris [Simpson]
Code
0 Reserved
1 unknown security parametersindex
2 valid security parameters,but authentication failed
3 valid security parameters,but decryption failed
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