| OID symbolic | OID numeric | Type | Access | Description |
|---|
| etsysEncr8021xConfigMIB | 1.3.6.1.4.1.5624.1.2.19 | | | The Enterasys Networks MIB module for configuring IEEE
802.1x implementations on SNMPv1-only platforms.
This MIB includes encrypted variants of selected objects
from the IEEE 802.1x MIB and the Enterasys 802.1x
Extensions MIB.
------------------
N O T I C E
Use of this MIB in any product requires the approval
of the Office of the CTO, Enterasys Networks, Inc.
Permission to use this MIB will not be granted for
products in which SNMPv3 is now, or will soon be,
implemented. Permission to use this MIB in products
that are never scheduled to implement SNMPv3 will be
granted on a case-by-case basis, depending on what
other suitable, secure means of configuration are
available in the product.
------------------
The following is a discussion of the encoding/decoding and
encryption/decryption methods that must be used to extract
data from an encrypted OCTET STRING. (These methods are the
same as for the Enterasys Networks encrypted RADIUS Client
MIB.)
The encryption/decryption methods make use of an agreed-upon
Secret and an Authenticator shared between the SNMP network
management system and the entity that implements the MIB.
The encryption/decryption algorithm, as presented herein, is
taken from the RADIUS protocol, and is the method specified
for encryption of Tunnel-Password Attributes in RFC 2868.
To permit plug-and-play remote installation, configuration,
and management of the device, the device will algorithmically
derive the initial shared secret and the initial authenticator.
For security reasons, the network manager should change the
authenticator portion of the management encryption key after
initial configuration. The methods available for doing this
are implementation-specific and subject to change.
All read-write and write-only access objects except the table
index are encoded into fields in an OCTET STRING.
Octet String
Before encryption, a 'native' object must be encoded into
a formatted Octet String. After decryption, the Octet String
must be decoded to obtain the 'native' object.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Length | Salt |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| String ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type
The data type of the non-encrypted 'native' data:
1 = Integer32
2 = OCTET STRING
Length
The length in octets of the native object sub-field of
the Octet String, exclusive of any optional padding.
Note that the Integrity Check sub-fields (CRC, OID-tail,
Time Stamp, Source IP Address) are not included in this
length value, but since the IC sub-fields are always
present and are of fixed length, there is no impediment
to proper packet parsing.
Salt
The Salt field is two octets in length and is used to
ensure the uniqueness of the encryption key used to
encrypt each object.
The most significant bit (leftmost) of the Salt field
MUST be set (1). The contents of each Salt field in a
given SNMP packet must be unique.
String
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| CRC (4 bytes) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| OID-tail (4 bytes) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Time Stamp (4 bytes) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Source IP Address (4 bytes) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Object/Padding ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
The plain-text String field consists of six logical
sub-fields: the CRC, OID-tail, Time Stamp, Source IP
address and native Object sub-fields (all of which are
required), and the optional Padding sub-field. The
String field MUST be treated as a counted-string of
undistinguished octets, and not as a standard
C/UNIX-style null-terminated, printable ASCII string.
CRC Sub-field
The CRC sub-field contains a 32-bit CRC (CRC-32)
calculated over the following concatentated sub-fields
of the String: the OID-tail, Time Stamp, Source IP
Address and unpadded native Object fields. The CRC
sub-field acts as an integrity check on the decrypted
data.
OID-tail Sub-field
The OID-tail sub-field contains the least significant
four octets of the Object ID of the varbind. This
field is included as an integrity check on the OID of
the varbind.
Time Stamp Sub-field
The Time Stamp sub-field contains a 32-bit unsigned
integer value representing the time the encrypted
message was assembled. This field acts as an
integrity check by facilitating the disposal of stale
or replayed messages. The time window of acceptance is
implementation dependant, and may be the subject of
local (i.e. managed entity) policy configuration. The
Time Stamp is relative time, in units of seconds,
referenced to the sysUpTime object of the managed
entity.
Source IP Address Sub-field
The Source IP Address sub-field contains an unsigned
32-bit representation of the IPv4 address of the
source of the encrypted message. This is an added
check to allow verification of the source of the
varbind.
The CRC, OID-tail, Time Stamp, and Source IP Address
sub-fields are collectively hereinafter refered to as
the Integrity Check (IC) sub-fields.
Object/Padding Sub-field
Object
The Object sub-field contains the actual or native
object data followed by padding, if necessary.
Padding
If the combined length (in octets) of the
non-encrypted CRC, OID-tail, Time Stamp, Source IP
Address, and native Object sub-fields is not an even
multiple of 16, then the Padding sub-field MUST be
present. If it is present, the length of the
Padding sub-field is variable, between 1 and 15
octets. The value of the pad octets SHOULD be zero.
Encrypting/Decrypting the String Field
The entire String field MUST be encrypted as follows,
prior to transmission:
Construct a plain-text version of the String field by
concatenating the CRC, OID-tail, Time Stamp, Source IP
address, and native Object sub-fields. If necessary,
pad the resulting string until its length (in octets)
is an even multiple of 16. It is recommended that zero
octets (0x00) be used for padding. Call this plain-text
P.
Shared Secret
The shared secret is formed from the MAC
(hardware) address of the primary management
interface of the managed device (containing the
RADIUS Client). The MAC address is represented
as up-cased, dashed-ASCII, e.g. 08-00-2B-11-22-33.
Authenticator
The 128-bit authenticator is a pre-defined
constant. The default value of the authenticator
is an Enterasys Networks trade secret. This value
is settable and the user is advised to change it
from the default value after initial configuration
of the system. Contact the MIB author for
additional information on the default value.
Call the shared secret S, the [pseudo-random] 128-bit
Authenticator R, and the contents of the Salt field A.
Break P into 16 octet chunks p(1), p(2)...p(i),
where i = len(P)/16. Call the cipher-text blocks
c(1), c(2)...c(i) and the final cipher-text C.
Intermediate values b(1), b(2)...c(i) are required.
Encryption is performed in the following manner ('+'
indicates concatenation):
b(1) = MD5(S + R + A) c(1) = p(1) xor b(1) C = c(1)
b(2) = MD5(S + c(1)) c(2) = p(2) xor b(2) C = C + c(2)
. .
. .
. .
b(i) = MD5(S + c(i-1)) c(i) = p(i) xor b(i) C = C + c(i)
The resulting encrypted String field will contain
c(1)+c(2)+...+c(i).
On receipt, the process is reversed to yield the
plain-text String. |
| etsysEncrDot1xConfigObjects | 1.3.6.1.4.1.5624.1.2.19.1 | | | |
| etsysEncrDot1xAuthConfigBranch | 1.3.6.1.4.1.5624.1.2.19.1.1 | | | |
| etsysEncrDot1xAuthPortConfigTable | 1.3.6.1.4.1.5624.1.2.19.1.1.1 | | not-accessible | A table that contains encrypted configuration objects for
ports that support Authenticator PAEs. |
| etsysEncrDot1xAuthPortConfigEntry | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1 | | not-accessible | Each conceptual row holds configuration information for
the Authenticator PAE(s) associated with one port. |
| OCT etsysEncrDot1xAuthAdminControlledDirections | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.1 | OCTET STRING | read-write | An encrypted octet string containing
The current value of the administrative controlled
directions parameter for the Port.
SYNTAX PaeControlledDirections
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthControlledPortControl | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.2 | OCTET STRING | read-write | An encrypted octet string containing
The current value of the controlled Port
control parameter for the Port.
SYNTAX INTEGER {
forceUnauthorized(1),
auto(2),
forceAuthorized(3)
}
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthQuietPeriod | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.3 | OCTET STRING | read-write | An encrypted octet string containing
The value, in seconds, of the quietPeriod constant
currently in use by the Authenticator PAE state
machine.
Alternately, the default value (for ports that use
station-based access control, and that therefore may
support many virtual PAEs).
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthTxPeriod | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.4 | OCTET STRING | read-write | An encrypted octet string containing
The value, in seconds, of the txPeriod constant
currently in use by the Authenticator PAE state
machine.
Alternately, the default value (for ports that use
station-based access control, and that therefore may
support many virtual PAEs).
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthSuppTimeout | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.5 | OCTET STRING | read-write | An encrypted octet string containing
The value, in seconds, of the suppTimeout constant
currently in use by the Backend Authentication state
machine.
Alternately, the default value (for ports that use
station-based access control, and that therefore may
support many virtual PAEs).
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthServerTimeout | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.6 | OCTET STRING | read-write | An encrypted octet string containing
The value, in seconds, of the serverTimeout constant
currently in use by the Backend Authentication state
machine.
Alternately, the default value (for ports that use
station-based access control, and that therefore may
support many virtual PAEs).
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthMaxReq | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.7 | OCTET STRING | read-write | An encrypted octet string containing
The value of the maxReq constant currently in use by
the Backend Authentication state machine.
Alternately, the default value (for ports that use
station-based access control, and that therefore may
support many virtual PAEs).
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthReAuthPeriod | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.8 | OCTET STRING | read-write | An encrypted octet string containing
The value, in seconds, of the reAuthPeriod constant
currently in use by the Reauthentication Timer state
machine.
Alternately, the default value (for ports that use
station-based access control, and that therefore may
support many virtual PAEs).
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthReAuthEnabled | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.9 | OCTET STRING | read-write | An encrypted octet string containing
The enable/disable control used by the Reauthentication
Timer state machine (8.5.5.1).
Alternately, the default value (for ports that use
station-based access control, and that therefore may
support many virtual PAEs).
SYNTAX INTEGER { true(1), false(2) }
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthKeyTxEnabled | 1.3.6.1.4.1.5624.1.2.19.1.1.1.1.10 | OCTET STRING | read-write | An encrypted octet string containing
The value of the keyTransmissionEnabled constant
currently in use by the Authenticator PAE state
machine.
Alternately, the default value (for ports that use
station-based access control, and that therefore may
support many virtual PAEs).
SYNTAX INTEGER { true(1), false(2) }
The data type is 1, Integer32. |
| etsysEncrDot1xAuthPortInitTable | 1.3.6.1.4.1.5624.1.2.19.1.1.2 | | not-accessible | A table that contains encrypted initialization objects for
port-based Authenticator PAEs. |
| etsysEncrDot1xAuthPortInitEntry | 1.3.6.1.4.1.5624.1.2.19.1.1.2.1 | | not-accessible | Each conceptual row holds initialization objects for one
port-based Authenticator PAE. |
| OCT etsysEncrDot1xAuthInitialize | 1.3.6.1.4.1.5624.1.2.19.1.1.2.1.1 | OCTET STRING | read-write | An encrypted octet string containing
The initialization control for this Port. Setting this
attribute to TRUE causes the Port to be initialized.
The attribute value reverts to FALSE once initialization
has been completed.
Setting this attribute to TRUE for a Port that uses
station-based access control causes all of the virtual
PAEs associated with the Port to be initialized.
SYNTAX INTEGER { true(1), false(2) }
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthReauthenticate | 1.3.6.1.4.1.5624.1.2.19.1.1.2.1.2 | OCTET STRING | read-write | An encrypted octet string containing
The reauthentication control for this Port. Setting this
attribute to TRUE causes the Authenticator PAE state
machine for the Port to reauthenticate the Supplicant.
Setting this attribute to FALSE has no effect.
This attribute always returns FALSE when it is read.
Setting this attribute to TRUE for a Port that uses
station-based access control causes all of the virtual
PAEs associated with the Port to reauthenticate their
Supplicants.
SYNTAX INTEGER { true(1), false(2) }
The data type is 1, Integer32. |
| etsysEncrDot1xAuthStationInitTable | 1.3.6.1.4.1.5624.1.2.19.1.1.3 | | not-accessible | A table that contains encrypted configuration objects for
station-based Authenticator PAEs. |
| etsysEncrDot1xAuthStationInitEntry | 1.3.6.1.4.1.5624.1.2.19.1.1.3.1 | | not-accessible | Configuration objects for one station-based Authenticator
PAE. |
| OCT etsysEncrDot1xAuthStationInitialize | 1.3.6.1.4.1.5624.1.2.19.1.1.3.1.1 | OCTET STRING | read-write | An encrypted octet string containing
The initialization control for this Authenticator PAE.
Setting this attribute to TRUE causes the PAE to be
initialized. The attribute value reverts to FALSE
once initialization has completed.
SYNTAX INTEGER { true(1), false(2) }
The data type is 1, Integer32. |
| OCT etsysEncrDot1xAuthStationReauthenticate | 1.3.6.1.4.1.5624.1.2.19.1.1.3.1.2 | OCTET STRING | read-write | An encrypted octet string containing
The reauthentication control for this Authenticator
PAE. Setting this attribute to TRUE causes the
Authenticator PAE state machine to reauthenticate the
Supplicant. Setting this attribute FALSE has no
effect. This attribute always returns FALSE when it
is read.
SYNTAX INTEGER { true(1), false(2) }
The data type is 1, Integer32. |
| etsysEncrDot1xConfigConformance | 1.3.6.1.4.1.5624.1.2.19.2 | | | |
| etsysEncrDot1xConfigGroups | 1.3.6.1.4.1.5624.1.2.19.2.1 | | | |
| etsysEncrDot1xAuthConfigGroup | 1.3.6.1.4.1.5624.1.2.19.2.1.1 | | | A collection of objects for configuring IEEE 802.1x
authentication at the port level. Objects belonging
to this group typically have durable values. |
| etsysEncrDot1xAuthInitGroup | 1.3.6.1.4.1.5624.1.2.19.2.1.2 | | | A collection of objects for making Authenticator PAEs
initialize and reauthenticate Supplicants. Writes
to objects in this group trigger actions, rather than
changes to durable configuration values. |
| etsysEncrDot1xConfigCompliances | 1.3.6.1.4.1.5624.1.2.19.2.2 | | | |
| etsysEncrDot1xConfigCompliance | 1.3.6.1.4.1.5624.1.2.19.2.2.1 | | | The compliance statement for devices that support the
Enterasys encrypted IEEE 802.1x configuration MIB. |
