DNS Proxy Configuration Object

Overview

The DnsProxy class manages DNS proxy configuration objects in Palo Alto Networks' Strata Cloud Manager. It extends from BaseObject and offers methods to create, retrieve, update, list, fetch, and delete DNS proxy configurations. These configurations enable DNS proxy services on firewall interfaces, allowing you to define default DNS servers, domain-specific server rules, static DNS entries, caching behavior, and TCP/UDP query settings.

Core Methods

Method	Description	Parameters	Return Type
`create()`	Creates a new DNS proxy configuration	`data: Dict[str, Any]`	`DnsProxyResponseModel`
`get()`	Retrieves a DNS proxy by its unique ID	`object_id: str`	`DnsProxyResponseModel`
`update()`	Updates an existing DNS proxy configuration	`proxy: DnsProxyUpdateModel`	`DnsProxyResponseModel`
`list()`	Lists DNS proxies with optional filtering	`folder: Optional[str]`, `snippet: Optional[str]`, `device: Optional[str]`, `exact_match: bool = False`, plus additional filters	`List[DnsProxyResponseModel]`
`fetch()`	Fetches a single DNS proxy by name within a container	`name: str`, `folder: Optional[str]`, `snippet: Optional[str]`, `device: Optional[str]`	`DnsProxyResponseModel`
`delete()`	Deletes a DNS proxy by its ID	`object_id: str`	`None`

DNS Proxy Model Attributes

Attribute	Type	Required	Default	Description
`name`	str	Yes	None	DNS proxy name. Max 31 chars
`id`	UUID	Yes*	None	Unique identifier (*response/update only)
`enabled`	bool	No	None	Enable DNS proxy
`default`	DnsProxyDefaultServer	No	None	Default DNS server configuration
`interface`	List[str]	No	None	Interfaces on which to enable DNS proxy service
`domain_servers`	List[DnsProxyDomainServer]	No	None	DNS proxy rules (domain servers). API alias: `domain-servers`
`static_entries`	List[DnsProxyStaticEntry]	No	None	Static domain name mappings. API alias: `static-entries`
`tcp_queries`	DnsProxyTcpQueries	No	None	TCP queries configuration. API alias: `tcp-queries`
`udp_queries`	DnsProxyUdpQueries	No	None	UDP queries configuration. API alias: `udp-queries`
`cache`	DnsProxyCache	No	None	DNS cache configuration
`folder`	str	No**	None	Folder location. Max 64 chars
`snippet`	str	No**	None	Snippet location. Max 64 chars
`device`	str	No**	None	Device location. Max 64 chars

* Only required for update and response models ** Exactly one container (folder/snippet/device) must be provided for create operations

Note

Several fields use aliases to map between Python attribute names (using underscores) and the API's hyphenated field names. For example, domain_servers maps to domain-servers in the API, static_entries maps to static-entries, tcp_queries maps to tcp-queries, and udp_queries maps to udp-queries. The SDK handles this mapping automatically when serializing and deserializing data.

Exceptions

Exception	HTTP Code	Description
`InvalidObjectError`	400	Thrown when provided data or parameters are invalid
`MissingQueryParameterError`	400	Thrown when required query parameters (e.g., `name` or `folder`) are missing
`NameNotUniqueError`	409	DNS proxy name already exists
`ObjectNotPresentError`	404	DNS proxy not found
`ReferenceNotZeroError`	409	DNS proxy still referenced by other objects
`AuthenticationError`	401	Authentication failed
`ServerError`	500	Internal server error

Basic Configuration

The DNS Proxy service can be accessed using either the unified client interface (recommended) or the traditional service instantiation.

Unified Client Interface (Recommended)

from scm.client import ScmClient

# Initialize client
client = ScmClient(
   client_id="your_client_id",
   client_secret="your_client_secret",
   tsg_id="your_tsg_id"
)

# Access the DNS Proxy service directly through the client
dns_proxies = client.dns_proxy

Traditional Service Instantiation (Legacy)

from scm.client import Scm
from scm.config.network import DnsProxy

# Initialize client
client = Scm(
   client_id="your_client_id",
   client_secret="your_client_secret",
   tsg_id="your_tsg_id"
)

# Initialize DnsProxy object explicitly
dns_proxies = DnsProxy(client)

Note

While both approaches work, the unified client interface is recommended for new development as it provides a more streamlined developer experience and ensures proper token refresh handling across all services.

Usage Examples

Creating DNS Proxies

from scm.client import ScmClient

# Initialize client
client = ScmClient(
   client_id="your_client_id",
   client_secret="your_client_secret",
   tsg_id="your_tsg_id"
)

# Create a basic DNS proxy with default server
proxy_data = {
   "name": "corp-dns-proxy",
   "enabled": True,
   "default": {
      "primary": "8.8.8.8",
      "secondary": "8.8.4.4"
   },
   "interface": ["ethernet1/1"],
   "folder": "Texas"
}

new_proxy = client.dns_proxy.create(proxy_data)
print(f"Created DNS proxy with ID: {new_proxy.id}")

# Create a DNS proxy with domain-specific rules and caching
advanced_proxy = {
   "name": "advanced-dns-proxy",
   "enabled": True,
   "default": {
      "primary": "10.0.0.1",
      "secondary": "10.0.0.2"
   },
   "interface": ["ethernet1/1", "ethernet1/2"],
   "domain-servers": [
      {
         "name": "internal-domains",
         "domain-name": ["*.corp.example.com", "*.internal.example.com"],
         "primary": "10.1.0.1",
         "secondary": "10.1.0.2",
         "cacheable": True
      }
   ],
   "static-entries": [
      {
         "name": "app-server",
         "domain": "app.corp.example.com",
         "address": ["10.2.0.100"]
      }
   ],
   "cache": {
      "enabled": True,
      "cache-edns": False,
      "max-ttl": {
         "enabled": True,
         "time-to-live": 3600
      }
   },
   "folder": "Texas"
}

adv_proxy = client.dns_proxy.create(advanced_proxy)
print(f"Created advanced DNS proxy with ID: {adv_proxy.id}")

Retrieving DNS Proxies

# Fetch by name and folder
proxy = client.dns_proxy.fetch(
   name="corp-dns-proxy",
   folder="Texas"
)
print(f"Found proxy: {proxy.name}")

# Get by ID
proxy_by_id = client.dns_proxy.get(proxy.id)
print(f"Retrieved proxy: {proxy_by_id.name}")

Updating DNS Proxies

# Fetch existing proxy
existing_proxy = client.dns_proxy.fetch(
   name="corp-dns-proxy",
   folder="Texas"
)

# Update the default DNS servers
existing_proxy.default = {
   "primary": "1.1.1.1",
   "secondary": "1.0.0.1"
}

# Perform update
updated_proxy = client.dns_proxy.update(existing_proxy)

Listing DNS Proxies

# List all DNS proxies in a folder
proxies = client.dns_proxy.list(
   folder="Texas"
)

# Process results
for proxy in proxies:
   print(f"Name: {proxy.name}, Enabled: {proxy.enabled}")

Filtering Responses

The list() method supports additional parameters to refine your query results even further. Alongside basic filters, you can leverage the exact_match, exclude_folders, exclude_snippets, and exclude_devices parameters to control which objects are included or excluded after the initial API response is fetched.

Parameters:

exact_match (bool): When True, only objects defined exactly in the specified container (folder, snippet, or device) are returned. Inherited or propagated objects are filtered out.
exclude_folders (List[str]): Provide a list of folder names that you do not want included in the results.
exclude_snippets (List[str]): Provide a list of snippet values to exclude from the results.
exclude_devices (List[str]): Provide a list of device values to exclude from the results.

Examples:

# Only return proxies defined exactly in 'Texas'
exact_proxies = client.dns_proxy.list(
   folder='Texas',
   exact_match=True
)

for proxy in exact_proxies:
   print(f"Exact match: {proxy.name} in {proxy.folder}")

# Exclude all proxies from the 'All' folder
no_all_proxies = client.dns_proxy.list(
   folder='Texas',
   exclude_folders=['All']
)

for proxy in no_all_proxies:
   assert proxy.folder != 'All'
   print(f"Filtered out 'All': {proxy.name}")

Controlling Pagination with max_limit

The SDK supports pagination through the max_limit parameter, which defines how many objects are retrieved per API call. By default, max_limit is set to 2500. The API itself imposes a maximum allowed value of 5000. If you set max_limit higher than 5000, it will be capped to the API's maximum. The list() method will continue to iterate through all objects until all results have been retrieved. Adjusting max_limit can help manage retrieval performance and memory usage when working with large datasets.

Example:

from scm.client import ScmClient

# Initialize client
client = ScmClient(
   client_id="your_client_id",
   client_secret="your_client_secret",
   tsg_id="your_tsg_id"
)

# Configure max_limit using the property setter
client.dns_proxy.max_limit = 4000

# List all proxies - auto-paginates through results
all_proxies = client.dns_proxy.list(folder='Texas')

Deleting DNS Proxies

# Delete by ID
proxy_id = "123e4567-e89b-12d3-a456-426655440000"
client.dns_proxy.delete(proxy_id)

Managing Configuration Changes

Performing Commits

# Prepare commit parameters
commit_params = {
   "folders": ["Texas"],
   "description": "Updated DNS proxy configurations",
   "sync": True,
   "timeout": 300  # 5 minute timeout
}

# Commit the changes directly on the client
result = client.commit(**commit_params)

print(f"Commit job ID: {result.job_id}")

Monitoring Jobs

# Get status of specific job directly from the client
job_status = client.get_job_status(result.job_id)
print(f"Job status: {job_status.data[0].status_str}")

# List recent jobs directly from the client
recent_jobs = client.list_jobs(limit=10)
for job in recent_jobs.data:
   print(f"Job {job.id}: {job.type_str} - {job.status_str}")

Error Handling

from scm.client import ScmClient
from scm.exceptions import (
   InvalidObjectError,
   MissingQueryParameterError,
   NameNotUniqueError,
   ObjectNotPresentError,
   ReferenceNotZeroError
)

# Initialize client
client = ScmClient(
   client_id="your_client_id",
   client_secret="your_client_secret",
   tsg_id="your_tsg_id"
)

try:
   # Create DNS proxy
   proxy_config = {
      "name": "test-dns-proxy",
      "enabled": True,
      "default": {
         "primary": "8.8.8.8"
      },
      "interface": ["ethernet1/1"],
      "folder": "Texas"
   }

   new_proxy = client.dns_proxy.create(proxy_config)

   # Commit changes
   result = client.commit(
      folders=["Texas"],
      description="Added DNS proxy",
      sync=True
   )

   # Check job status
   status = client.get_job_status(result.job_id)

except InvalidObjectError as e:
   print(f"Invalid proxy data: {e.message}")
except NameNotUniqueError as e:
   print(f"Proxy name already exists: {e.message}")
except ObjectNotPresentError as e:
   print(f"Proxy not found: {e.message}")
except ReferenceNotZeroError as e:
   print(f"Proxy still in use: {e.message}")
except MissingQueryParameterError as e:
   print(f"Missing parameter: {e.message}")

Best Practices

Client Usage
Use the unified client interface (client.dns_proxy) for streamlined code
Create a single client instance and reuse it across your application
Perform commit operations directly on the client object (client.commit())
DNS Proxy Configuration
Always configure both primary and secondary DNS servers for redundancy
Use domain-specific server rules for internal domains that require dedicated DNS servers
Enable caching to improve DNS resolution performance and reduce upstream queries
Use static entries for critical internal services that need reliable resolution
Alias Handling
When providing data as dictionaries, use the hyphenated API field names (e.g., domain-servers, static-entries, tcp-queries)
When accessing model attributes in Python, use the underscore-based names (e.g., domain_servers, static_entries, tcp_queries)
The SDK handles the conversion automatically via Pydantic aliases
Container Management
Always specify exactly one container (folder, snippet, or device)
Use consistent container names across operations
Validate container existence before operations
Error Handling
Implement comprehensive error handling for all operations
Check job status after commits
Handle specific exceptions before generic ones
Log error details for troubleshooting
Performance
Use appropriate pagination for list operations
Cache frequently accessed proxy configurations
Implement proper retry mechanisms