I have created network policy to restrict the user by using ALLOWED_IP_LIST only.
CREATE NETWORK POLICY Test ALLOWED_IP_LIST = ('103.136.64.120');
Question is:
I'm using free trial and unable to set network policy through portal
If I can create NETWORK POLICY through command prompt, then how we can check/test policy on Web
3)I tried to execute query on Web, still able to access database(expecting to restrict it for particular IP)
Note: I followed the documents https://docs.snowflake.com/en/sql-reference/sql/create-network-policy.html
After you create a network policy, you need to apply it to either the account or a user. You can use the UI to apply an account-level network policy.
https://docs.snowflake.com/en/user-guide/network-policies.html#modify-an-account-level-network-policy
You can apply a network policy to either the account or a user using SQL to alter the account or user parameter for NETWORK_POLICY:
Account:
https://docs.snowflake.com/en/sql-reference/sql/alter-account.html#alter-account
User:
https://docs.snowflake.com/en/sql-reference/sql/alter-user.html#alter-user
You may consider testing on a user first (creating an additional one if required) to avoid accidentally locking yourself out from the account.
Related
You've got this great new feature in Azure AD under Entitlement management: Access Packages.
Packages including groups and what more for specific users and roles.
https://learn.microsoft.com/en-us/azure/active-directory/governance/entitlement-management-access-package-create
The issue I'm struggling with, is how can I add users by dynamic group without them having to request access first?
I feel like I'm overseeing something, but as it looks now you can only add a Dynamic Group & the users in the group can request access to the AccessPackages.
Has anyone else dealt with this already?
Please check the references and if below can be worked around in your case.
According to Create a new access package in entitlement management - Azure AD | Microsoft Docs.
If you want to bypass access requests and allow administrators to directly assign specific users to this access package. click None (administrator direct assignments only) in request section to create a policy where users need not request for access. For this group selection is not there.Users won't have to request the access package.
But if you need to select specific dynamic group for policy .
You can create a access package with dynamic groups selected .
You can create a policy separately for the users for dynamic group with require approval disabled and requests disabled.
Then while assignment requests are bypassed and approved even if the policy has request approval.
Even if require approval and requests are enabled in first step, you can set a separate policy by setting the by pass approval to yes.
Note :Dynamic group is to be given the owner role for access packages.
Reference: active-directory-entitlement-management-request-policy | (github)
I'd like to create network policies in snowflake with this design
A user called loader can access with some unique 5 IPs
A user called transformer can access with some other unique 5 IPs
All other users can access on any IP - i.e. no network policy
From the docs on snowflake and the approach, it seems I can only add an account-level policy, which is then used inside for users specifically as needed
Can I create directly user-level network policies only for 1, 2 and leave out 3 in some way?
Please check the following page:
https://docs.snowflake.com/en/user-guide/network-policies.html#managing-user-level-network-policies
To activate a network policy for an individual user, set the NETWORK_POLICY parameter for the user using ALTER USER.
https://docs.snowflake.com/en/sql-reference/parameters.html#label-network-policy
"Issue description copied..."
I'm building a partner connector, which relies on a user name and password to connect to database (very similar to the existing Postgres / MySQL connectors provided by Google). In order to verify the credentials, I also need the database host information to be present in addition to username and password and this is the base of my problem.
The Google build connectors conveniently are allowed to collect user credentials and the database related information at the same time. Unfortunately, that doesn't seem to be the case for partner connectors as stated in the requirements
Point 5 "Use appropriate authentication method in getAuthType(). Do not request credentials via getConfig()."
The authentication itself happens before any other configuration details are known (there is just a dialog for username and password) and there doesn't seem to be a way to request additional information on the authentication screen itself. Once the credentials have been entered, the verification also happens immediately, before the configuration is being shown in the next step.
Once credentials are validated successfully, Datastudio then assumes the schema and data can be requested.This excludes the option of a dummy confirmation, because there doesn't seem to be a way to tell credentials are invalid and need to be changed after checking the other configuration details on the next screen.
That makes me unsure, how to determine valid credentials in my use case as I need to know the variable endpoint to authenticate against. I definitely want to avoid storing any user credentials myself in an external database, because this opens up another can of worms.
Has anyone successfully solved a similar issue before and can provide guidance here?
This is a known limitation of the authentication methods for Community Connectors.
A workaround would be to use authtype NONE and then request the credentials and database information in the config. This is, however, not a recommended approach.
Deploying the same HTTP based application on several web servers (srv1, srv2, etc). Protecting the application with SPNEGO auth. The servers are Linux and AD doesn't know of their existence, i.e. they are not joined to the domain. I've got the whole SPNEGO working smoothly on a single host. Now moving on to the subsequent hosts.
Most guides I've found will tell you that you need
An account in AD
A SPN
A keytab (generated on the AD server and then
moved to the Linux host)
While I believe that (2) + (3) will always need to be per-server, I'm somewhat uncertain about (1). Can I do with only one account? I would really like to not having all these accounts in AD if I can do with only one.
This blog has a good recipe for how it can be done: The first invocation of ktpass (for srv1) should be as described in the all the guides you find on the internet, however subsequent invocations (for srv2, srv3, etc) should be using the -setpass and -setupn options.
However I've found that when one uses the ktpass.exe tool the account's userPrincipalName attribute changes to become as given by princ argument from the last invocation of ktpass. So the name of the srv, e.g. srv3 is coded into the name and the name of the account will therefore basically change with each invocation of ktpass. When the web server performs the final step in the SPNEGO chain of events, which is to contact AD using the keytab as credentials, it will look for an account in AD with a userPrincipalName equal to the SPN and this step will therefore fail. (source, scroll to last post, list item 3). Contradicting this is that I'm using Tomcat and thereby JAAS and as far as I understand I can hardcode the principal name to use in my jaas.conf file thereby effectively ignoring the principal name from the keytab.
Can multiple app servers + single account in AD ever work and if so how?
In short, yes it will work and I will tell you how. First of all let's clarify some things and some statements not properly described in your question or the comments:
You have three machines which serve the same DNS name, this means that you either have a DNS round-robin: service.example.com will returned a shuffled list if IPs or a load-balancer (hard of sort) will only one IP for the A record depending on the load. For Kerberos, both setups are equal in the outcome.
Now, you cannot say that the AD does not know the existence of a service or a server if you require Kerberos authentication. It will and must know otherwise it cannot create service tickets for your clients which they pass on to the server. Additionally, Tomcat will not contact the KDC to accept the security context because the service ticket is encrypted with the account's long-term key.
Here is the approach: You have already figured out that one SPN can be bound to one machine, multiple bindings are not allowed. This is the case when you have the machine name bound to the machine account (srv1$, etc.). You need a service account. The service account is a regular account without password expiration, e.g., my-service#EXAMPLE.COM. For this account, you will bind your CNAME or A record. Have you Tomcat authenticator to accept all securty contexts with this service account and it will work.
How to create this magical service account on a Unix-like OS?
Use mskutil to
create the service account,
create a keytab for that service account,
bind your SPN to that service account and have the keytab updated.
After that you will have a keytab suitable for your use. Verify with an LDAP query (e.g., with Softerra's LDAP browser or else) that the account exists, the SPN (servicePrincipalName) is bound to that account and you are done.
Important: if any of your clients use MIT Kerberos or Heimdal, you must set rdns = false your your krb5.conf.
Godspeed!
If a user logs in to their computer using a Single Sign-On system such as Active Directory, LDAP, or Kerberos, is it possible for applications they run to know who they are and what system they authenticated with? Can I get enough information out of these systems to verify their identity without requiring any additional user input?
Specifically, I would like to be able to check these things:
Did they log in via a single sign-on system at all, or are they just using a regular user account on this machine?
What system did they use?
Does the system have some URI that would distinguish it from any other directory?
What is the current user's distinguished name in that directory?
Can I get some information which I can pass to another host to prove to that host that the user is who they said they are? For example, a token that can be used to query the SSO system.
I'd assume all of these things should be possible, and in fact encouraged, but I am not positive. I'm sure the method of getting at this information is
SSO (at least with Kerberos which is used by ActiveDirectoy) is based on a token. As soon as the user requests access to a kerberized system the system queries for the token and checks its validity for accessing the system. It's as good as querying for username and password. when the user did not log in with an Kerberos-account there is no tiket so no automated access.
using the token you can get the users login- name and from that you can then use that to query the SSO-backend (typically LDAP) for more information on that user.
LDAP is not an SSO-system as it is simply a storage query protocol but it is often used as backend for SSO-systems.
The problem often is kerberizing an application. for Webapps that means you have to kerberize the webserver so that that one then can handle the authentication process with the SSO-service and then pass that information on to the unferlying webapp.
Hope that answers you questions.
for more information have a look around the web for kerberos
You are really asking about two things:
Authentication: Who are you?
Authorization: What are you allowed to do?
Kerberos really only answers the first question, you need a secondary system like LDAP or Active Directory ( which is both kerberos and ldap in a single server) to answer the second.
If your system is using kerberos correctly, any user login should have an associated kerberos ticket. With this ticket, you can request "service" tickets
to prove your identity to remote servers that support kerberos. The ticket
contains your principal identity in the realm ( user#DOMAIN.NET ) that can be
used to query authorization systems.
However, the details required to get all the moving parts in that sentence working together "on the same page" so to speak can be very complex. The remote service has to support accepting kerberos credentials, it has to be either in the same realm or have a cross realm trust relationship configured.... The list
gets pretty long. Depending on your exact application environment, using all these things can be fairly trivial, or it can be next to impossible.