The available Telnet channel types and their functionalities are described below.
telnet |
Yes |
telnet: Enables access to the server's terminal. This channel must be enabled for Telnet to work.
Channel-specific actions:
For example: "actions": {
"audit": true,
"four_eyes": true,
"content_policy": {
"key": "433849548566ab327522e6"
"meta": {
"href": "/api/configuration/policies/content_policies/44287216854f482e7f2b24"
}
},
} |
Lists the configured authentication methods that can be used in a connection. Each connection policy uses an authentication policy to determine how the client can authenticate on the SPS gateway.
URL
GET https://<IP-address-of-SPS>/api/configuration/telnet/authentication_policies
Cookies
session_id |
Contains the authentication token of the user |
Required |
The value of the session ID cookie received from the REST server in the authentication response, for example, a1f71d030e657634730b9e887cb59a5e56162860. For more information on authentication, see Authenticate to the SPS REST API.
NOTE: This session ID refers to the connection between the REST client and the SPS REST API. It is not related to the sessions that SPS records (and which also have a session ID, but in a different format). |
Sample request
The following command lists Telnet authentication policies.
curl --cookie cookies.txt https://<IP-address-of-SPS>/api/configuration/telnet/authentication_policies
The following command retrieves the properties of a specific policy.
curl --cookie cookies.txt https://<IP-address-of-SPS>/api/configuration/telnet/authentication_policies<object-id>
Response
The following is a sample response received when listing Telnet authentication policies.
For more information on the meta object, see Message format.
{
"items": [
{
"key": "-200",
"meta": {
"href": "/api/configuration/telnet/authentication_policies/-200"
}
},
{
"key": "-304002001",
"meta": {
"href": "/api/configuration/telnet/authentication_policies/-304002001" }
}
}
],
"meta": {
"first": "/api/configuration/telnet/authentication_policies",
"href": "/api/configuration/telnet/authentication_policies",
"last": "/api/configuration/telnet/settings_policies",
"next": "/api/configuration/telnet/channel_policies",
"parent": "/api/configuration/telnet",
"previous": null,
"transaction": "/api/transaction"
}
}
When retrieving the endpoint of a specific policy, the response is the following.
{
"body": {
"active_pattern_sets": [],
"backend": {
"selection": "ldap"
},
"name": "telnet_auth_policy_with_ldap"
}
key |
|
|
string |
Top level element, contains the ID of the policy. |
body |
|
|
Top level element |
Contains the elements of the policy. |
|
name |
|
string |
The name of the object. This name is also displayed on the SPS web interface. It cannot contain whitespace. |
|
active_pattern_sets |
|
JSON list |
The list of patterns to use to extract the username from the sessions. For more information, see Extracting username from Telnet connections. For example: "active_pattern_sets": ["-8000","-8001","-8002"] |
|
backend |
|
Top level item |
Client-side gateway authentication settings. The value of selection defines which authentication method is used. |
|
|
selection |
string |
Defines the authentication method for client-side gateway authentication. Possible values are:
-
none
Disables client-side gateway authentication.
-
ldap
Uses the LDAP server selected for the connection policy. LDAP servers can be configured in the /api/configuration/policies/ldap_servers endpoint).
-
local
Uses the local user database configured in the /api/configuration/policies/user_databases/ endpoint.
To use this option, you must also configure the user_database element.
-
radius
Uses one or more Radius servers for authentication.
To use this option, you must also configure the authentication_protocol and servers elements. |
address |
|
Top level element |
Defines the address of a RADIUS server. |
|
selection |
string |
Required child of the address element. Possible values are:
|
|
value |
string |
The IP or the FQDN address of the RADIUS server. |
port |
|
int |
The port number of the RADIUS server. |
shared_secret |
|
string |
References the key of the shared secret for the RADIUS server. You can configure shared secrets at the /api/configuration/passwords/ endpoint.
To modify or add a shared secret, use the value of the returned key as the value of the shared_secret element, and remove any child elements (including the key).
Alternatively, you can include the new password as plain text. "shared_secret": {
"plain": "<new-password>"
} |
Examples:
Querying base authentication policy without gateway authentication:
{
"key": "-304002001",
"body": {
"name": "base",
"backend": {
"selection": "none"
}
}
}
Querying authentication policy with LDAP backend:
{
"key": "telnet-auth-pol-2",
"body": {
"name": "telnet_ldap",
"backend": {
"selection": "ldap",
"timeout": 3600,
"keepalive": true
}
}
}
Querying authentication policy with local backend:
{
"key": "telnet-auth-pol-3",
"body": {
"name": "telnet_local",
"backend": {
"selection": "local",
"user_database": {
"key": "local-user-database-1",
"meta": { "href": "/api/configuration/policies/user_databases/local-user-database-1" }
},
"timeout": 3600,
"keepalive": true
}
}
}
Querying authentication policy with RADIUS backend:
{
"key": "telnet-auth-pol-4",
"body": {
"name": "telnet_radius",
"backend": {
"selection": "radius",
"servers": [
{
"address": {
"selection": "ip",
"value": "1.2.3.4"
},
"port": 1812,
"shared_secret": {
"key": "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
"meta": { "href": "/api/configuration/passwords#XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX" }
}
}
],
"authentication_protocol": "pap",
"timeout": 3600,
"keepalive": true
}
}
}
Status and error codes
The following table lists the typical status and error codes for this request. For a complete list of error codes, see Application level error codes.
201 |
Created |
The new resource was successfully created. |
400 |
InvalidQuery |
The requested filter or its value is invalid. |
401 |
Unauthenticated |
The requested resource cannot be retrieved because the client is not authenticated and the resource requires authorization to access it. The details section contains the path that was attempted to be accessed, but could not be retrieved. |
403 |
Unauthorized |
The requested resource cannot be retrieved because the client is not authorized to access it. The details section contains the path that was attempted to be accessed, but could not be retrieved. |
404 |
NotFound |
The requested object does not exist. |
Add a Telnet authentication policy
To add a Telnet authentication policy, you have to:
-
Open a transaction.
For more information, see Open a transaction.
-
Create the JSON object for the new policy.
POST the JSON object to the https://<IP-address-of-SPS>/api/configuration/telnet/authentication_policies/ endpoint.
If the POST request is successful, the response includes the key of the new policy. For example:
{
"key": "6f924f39-e4c9-4b0f-8018-8842e2115ebd",
"meta": {
"href": "/api/configuration/telnet/authentication_policies/6f924f39-e4c9-4b0f-8018-8842e2115ebd",
"parent": "/api/configuration/telnet/authentication_policies",
"transaction": "/api/transaction"
}
}
-
Commit your changes.
For more information, see Commit a transaction.
Modify a Telnet authentication policy
To modify a Telnet authentication policy, you have to:
-
Open a transaction.
For more information, see Open a transaction.
-
Modify the JSON object of the policy.
PUT the modified JSON object to the https://<IP-address-of-SPS>/api/configuration/telnet/authentication_policies/<key-of-the-object> endpoint.
-
Commit your changes.
For more information, see Commit a transaction.
List of options that affect all Telnet connections.
URL
GET https://<IP-address-of-SPS>/api/configuration/telnet/options
Cookies
session_id |
Contains the authentication token of the user |
Required |
The value of the session ID cookie received from the REST server in the authentication response, for example, a1f71d030e657634730b9e887cb59a5e56162860. For more information on authentication, see Authenticate to the SPS REST API.
NOTE: This session ID refers to the connection between the REST client and the SPS REST API. It is not related to the sessions that SPS records (and which also have a session ID, but in a different format). |
Sample request
The following command lists global Telnet options.
curl --cookie cookies.txt https://<IP-address-of-SPS>/api/configuration/telnet/options
Response
The following is a sample response received when listing the default global Telnet options.
For more information on the meta object, see Message format.
{
"body": {
"channel_database_cleanup": {
"enabled": false
},
"service": {
"enabled": false
}
}
}
"key": "options",
"meta": {
"first": "/api/configuration/telnet/channel_policies",
"href": "/api/configuration/telnet/options",
"last": "/api/configuration/telnet/options",
"next": null,
"parent": "/api/configuration/telnet",
"previous": "/api/configuration/telnet/channel_policies",
"transaction": "/api/transaction"
}
}
key |
|
Top level item |
Contains the ID of the endpoint. |
body |
|
Top level item |
Contains the elements of the global Telnet options. |
|
channel_database_cleanup |
Top level item |
Contains settings for database cleanup. |
|
service |
Top level item |
Global setting to enable Telnet connections, and specify the logging detail. |
days |
integer |
Applies only if enabled is set to true.
Global retention time for the metadata of Telnet connections, in days. Must exceed the retention time of the archiving policy (or policies) used for Telnet connections, and the connection-specific database cleanup times (if configured). |
enabled |
boolean |
To enable the global cleanup of Telnet connection metadata, set this element to true. |
log_level |
integer |
Applies only if enabled is set to true.
Defines the logging detail of Telnet connections. |
enabled |
boolean |
Set to true to enable Telnet connections. |
Examples
Querying the full list of global Telnet options:
{
"body": {
"channel_database_cleanup": {
"enabled": true,
"days": 365
},
"service": {
"enabled": true,
"log_level": 4
}
}
"key": "options",
"meta": {
"first": "/api/configuration/telnet/channel_policies",
"href": "/api/configuration/telnet/options",
"last": "/api/configuration/telnet/options",
"next": null,
"parent": "/api/configuration/telnet",
"previous": "/api/configuration/telnet/channel_policies",
"transaction": "/api/transaction"
}
}
Modify global Telnet settings
To modify global Telnet settings, you have to:
-
Open a transaction.
For more information, see Open a transaction.
-
Modify the JSON object of the global Telnet settings endpoint.
PUT the modified JSON object to the https://<IP-address-of-SPS>/api/configuration/telnet/options endpoint.
You can find a detailed description of the available parameters listed in Element.
For more information about the elements of the channel_database_cleanup item, see Elements of channel_database_cleanup.
For more information about the elements of the service item, see Elements of service.
-
Commit your changes.
For more information, see Commit a transaction.
Status and error codes
The following table lists the typical status and error codes for this request. For a complete list of error codes, see Application level error codes.
201 |
Created |
The new resource was successfully created. |
401 |
Unauthenticated |
The requested resource cannot be retrieved because the client is not authenticated and the resource requires authorization to access it. The details section contains the path that the SPS REST API attempted to access, but could not retrieve. |
403 |
Unauthorized |
The requested resource cannot be retrieved because the client is not authorized to access it. The details section contains the path that the SPS REST API attempted to access, but could not retrieve. |
404 |
NotFound |
The requested object does not exist. |
List of Telnet pattern sets that help to extract the username from Telnet connections.
URL
GET https://<IP-address-of-SPS>/api/configuration/telnet/pattern_sets
Cookies
session_id |
Contains the authentication token of the user |
Required |
The value of the session ID cookie received from the REST server in the authentication response, for example, a1f71d030e657634730b9e887cb59a5e56162860. For more information on authentication, see Authenticate to the SPS REST API.
NOTE: This session ID refers to the connection between the REST client and the SPS REST API. It is not related to the sessions that SPS records (and which also have a session ID, but in a different format). |
Sample request
The following command lists the available Telnet pattern sets.
curl --cookie cookies.txt https://<IP-address-of-SPS>/api/configuration/telnet/pattern_sets
Response
The following is a sample response received when listing the available Telnet pattern sets.
For more information on the meta object, see Message format.
{
"items": [
{
"body": { "name": "Cisco devices",
"description: "Cisco devices that require authentication"
},
"key": "-8000",
"meta": { "href": "/api/configuration/telnet/pattern_sets/-8000" }
},
{
"body": { "name": "Cisco devices without authentication",
"description": "Cisco devices that do not require authentication"
},
"key": "-8001",
"meta": { "href": "/api/configuration/telnet/pattern_sets/-8001" }
},
{
"body": { "name": "General Telnet",
"description": "General Telnet servers (for example, Linux telnetd)"
},
"key": "-8002",
"meta": { "href": "/api/configuration/telnet/pattern_sets/-8002" }
}
],
"meta": {
"first": "/api/configuration/telnet/authentication_policies",
"href": "/api/configuration/telnet/pattern_sets",
"last": "/api/configuration/telnet/pattern_sets",
"next": null,
"parent": "/api/configuration/telnet",
"previous": "/api/configuration/telnet/options",
"remaining_seconds": 600,
"transaction": "/api/transaction"
}
}
key |
|
string |
Contains the ID of the pattern set. The pattern set IDs can be used for specifying the active_pattern_sets JSON list at the configuration of Telnet authentication policies.. |
body |
|
string |
Contains the descriptive name of the pattern set. |
|
name |
string |
Descriptive name of the pattern set. |
To upload a telnet pattern set:
-
Open a transaction.
For more information, see Open a transaction.
-
Upload the telnet pattern set file.
POST the valid_pattern_set.tps file to the https://<IP-address-of-SPS>/api/upload/pattern_set endpoint, for example:
curl -X POST --cookie cookies.txt --insecure https://<IP-address-of-SPS>/api/upload/pattern_set --data-binary @<path-to-pattern_set.tps>
The following is a sample response received:
For details of the meta object, see Message format.
{
"body": {
"description": "Test Pattern Set description",
"name": "Test Pattern Set"
},
"key": "XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
"meta": {
"href": "/api/configuration/telnet/pattern_sets/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX",
"parent": "/api/configuration/telnet/pattern_sets"
}
}
Status and error codes
The following table lists the typical status and error codes for this request. For a complete list of error codes, see Application level error codes.
400 |
PatternSetValidationFailed |
The validation of the telnet pattern set file failed. |
401 |
Unauthenticated |
The requested resource cannot be retrieved because the client is not authenticated and the resource requires authorization to access it. The details section contains the path that was attempted to be accessed, but could not be retrieved. |
403 |
Unauthorized |
The requested resource cannot be retrieved because the client is not authorized to access it. The details section contains the path that was attempted to be accessed, but could not be retrieved. |
-
Commit your changes.
For more information, see Commit a transaction.
Note the following points:
-
Built-in telnet pattern sets cannot be deleted. The ID of built-in pattern sets begins with "-".
-
Existing pattern sets cannot be re-loaded, only if you delete them beforehand.
Operations with the /pattern_sets endpoint
-
/api/configuration/telnet/pattern_sets: GET
-
/api/configuratation/telnet/pattern_sets/<id>: GET, DELETE
-
/api/upload/pattern_set: POST
Status and error codes
The following table lists the typical status and error codes for this request. For a complete list of error codes, see Application level error codes.
404 |
NotFound |
The requested object does not exist. |
405 |
DeleteNotAllowedOnBuiltInPatternSet |
The deletion of built-in telnet pattern sets is not allowed. |