For IT administrators. How to give Notate users access to your on-premises Windows file shares (SMB), deliver the configuration through your MDM, and provide the secure network path the app needs, including the extra requirements for Kerberos.
Notate's file manager can show on-premises Windows file shares alongside SharePoint, OneDrive, Teams and email attachments. You provision shares centrally through MDM policy; users do not add servers themselves. Each user enters their own domain credentials the first time they open a share, and Notate authenticates with NTLM (the default) or Kerberos.
At a glance. Two policy keys are enough for a basic NTLM deployment: allowSMB and smbConnectionList. Kerberos adds two more: useSMBKerberos and kerberosConfig. Everything else in this chapter is about the network path that carries the traffic.
Prerequisites
|
Requirement |
Details |
|---|---|
|
Managed Notate app |
Notate deployed and managed through your MDM: Microsoft Intune, Ivanti (formerly MobileIron), BlackBerry UEM, Citrix, or another AppConfig-compliant MDM. |
|
Reachable file servers |
One or more SMB file servers on the corporate network, with the shares and NTFS permissions your users need. |
|
Secure tunnel |
A per-app VPN or full-device VPN that routes device traffic to the file servers (and, for Kerberos, to the domain controllers). Required for every deployment, including BlackBerry Dynamics. |
|
Directory credentials |
Standard Active Directory accounts. Users enter these in the app; they are never stored in policy. |
|
Kerberos only |
Reachable KDCs (domain controllers), an accurate device clock, and the realm details needed to build krb5.conf. |
Secure tunnel requirements
SMB (TCP 445) is never exposed directly to the internet, and mobile devices are usually off the corporate network, so the device needs a secure tunnel before it can reach any file server.
|
Model |
How it works |
Best for |
|---|---|---|
|
Per-app VPN (recommended) |
Your MDM maps the Notate app to a VPN profile, so only Notate's traffic tunnels to the corporate network. Notate has been validated with Citrix NetScaler (Secure Access). |
Most deployments: least impact on the device, cleanest security boundary. |
|
Full-device VPN |
All device traffic tunnels through the corporate gateway. Simpler to configure, but routes unrelated traffic through your network. |
Fully managed or locked-down devices. |
On iPhone and iPad, associate the per-app VPN payload with the Notate app's bundle identifier in your MDM, and set it to connect on demand, so opening a share starts the tunnel without the user starting the VPN by hand.
BlackBerry Dynamics also needs a VPN for SMB. SMB is not carried by the BlackBerry Dynamics secure tunnel. BlackBerry's secure connectivity routes only its own networking interfaces, and Notate's SMB connection uses low-level network sockets outside that layer, so BlackBerry Proxy is not in the path. Use a per-app or device VPN on BlackBerry UEM as you would on any other MDM. Two BlackBerry options work: BlackBerry Secure Connect Plus, the per-app VPN built into BlackBerry UEM, and CylanceGATEWAY, BlackBerry's cloud-delivered zero-trust network access service. Validate the tunnel in your environment before a broad rollout.
What the tunnel must reach
The tunnel must give the device a route to your internal file servers and DNS and, for Kerberos, to your domain controllers. Split-tunnel configurations must explicitly include those subnets.
|
Service |
Port |
NTLM |
Kerberos |
Destination |
|---|---|---|---|---|
|
SMB file access |
TCP 445 |
Required |
Required |
Each file server |
|
DNS |
UDP/TCP 53 |
Recommended |
Required |
Internal DNS servers |
|
Kerberos ticket granting |
TCP/UDP 88 |
Not needed |
Required |
KDCs (domain controllers) |
|
Kerberos password change |
TCP/UDP 464 |
Not needed |
Optional* |
kpasswd server |
|
LDAP directory lookups |
TCP 389 / 636 |
Not needed |
Optional* |
Domain controllers |
|
Time synchronization |
UDP 123 |
Not needed |
See the Kerberos notes below |
Internal NTP, if used |
* Needed only if your environment requires in-app password changes or LDAP referrals. Most deployments do not.
Why Kerberos needs more than NTLM: with NTLM, the device authenticates over the SMB session on port 445 and the file server checks the response with a domain controller, so the device only needs to reach the file server. With Kerberos, the device first obtains a ticket directly from the KDC on port 88, so the tunnel must also reach the domain controllers and the DNS that locates them.
Policy keys
Deliver these application policies through your MDM. Key names are case-sensitive.
|
Key |
Type |
Default |
Purpose |
|---|---|---|---|
|
|
Boolean |
true |
Master switch for network drives. Set to false to hide the Network Drives section entirely. |
|
|
String, up to 1024 characters |
empty |
The shares users see, comma-separated. |
|
|
Boolean |
false |
false = NTLM, true = Kerberos. |
|
|
String, up to 4096 characters |
empty |
Your krb5.conf, Base64-encoded. Kerberos only. |
smbConnectionList
Each entry is a path to a share followed by an optional friendly name, separated by a vertical bar: server/share/optional/subpath|Friendly Name. The first segment is the server, as a host name or IP address. The friendly name is what the user sees; without it, Notate shows the path. Separate shares with commas.
fileserver01.example.com/Corporate|Corporate Drive,192.168.4.20/Engineering/Specs|Eng Specs
Users cannot add servers. Servers come only from smbConnectionList. Users can enter credentials for a provisioned share and disconnect from it, but they cannot define new servers, which keeps network drive access under your control.
Configuring Kerberos
Use Kerberos when your file servers require it or NTLM is disabled in your environment. NTLM is the simpler choice and needs none of the steps below.
Step 1: Build your krb5.conf
Create a standard MIT krb5.conf for your realm and KDCs. A minimal file, with example names to replace:
[libdefaults]
default_realm = EXAMPLE.COM
dns_lookup_kdc = false
dns_lookup_realm = false
rdns = false
dns_canonicalize_hostname = false
forwardable = true
noaddresses = true
[realms]
EXAMPLE.COM = {
kdc = dc1.example.com
admin_server = dc1.example.com
}
[domain_realm]
.example.com = EXAMPLE.COM
example.com = EXAMPLE.COM
|
Setting |
Meaning |
|---|---|
|
|
Your Active Directory domain, in UPPERCASE. |
|
|
A domain controller reachable through the tunnel on port 88. Add more lines for redundancy. |
|
|
The kpasswd host, usually the same domain controller. |
|
|
false uses the kdc lines you list (recommended). true finds KDCs through DNS SRV records and needs DNS through the tunnel. |
|
|
Leave false. |
|
|
false, so host names are not reverse-resolved and service names match the names you connect to. |
|
|
true, so tickets are not tied to a source IP address. Important behind a VPN. |
|
|
true for typical enterprise use. |
|
|
Maps your DNS domains to the realm. |
Kerberos essentials: the realm must be UPPERCASE; each KDC must be resolvable and reachable through the tunnel on port 88; and the device clock must be within five minutes of the KDC, or ticket requests fail.
Step 2: Encode krb5.conf as Base64
MDM policy values are single-line strings, so the multi-line file must be converted to one Base64 line. On a Mac, run base64 -i krb5.conf in Terminal. On Windows, run [Convert]::ToBase64String([IO.File]::ReadAllBytes("krb5.conf")) in PowerShell. You can also use an online encoder such as base64encode.org with the UTF-8 character set.
Paste the whole result as the value of kerberosConfig, as one line with no breaks or spaces. Re-encode and update the policy whenever krb5.conf changes.
Step 3: Turn Kerberos on
Set useSMBKerberos to true and confirm kerberosConfig is filled in. Check that the tunnel reaches the KDCs on port 88 and DNS on port 53. Once the policy reaches the device, connections use Kerberos.
Delivering the configuration through your MDM
The keys are the same on every MDM; only the format differs.
Microsoft Intune
In an app configuration policy for the managed Notate app, add the keys as name and value pairs. The Intune template already includes allowSMB, smbConnectionList and useSMBKerberos; add kerberosConfig as a string.
<key>allowSMB</key><true />
<key>useSMBKerberos</key><true />
<key>smbConnectionList</key>
<string>fileserver01.example.com/Corporate|Corporate Drive</string>
<key>kerberosConfig</key>
<string>(your Base64-encoded krb5.conf)</string>
Ivanti and other AppConfig MDMs
Deliver the keys in the standard managed app configuration format, or enter them in your MDM's app configuration screen:
<managedAppConfiguration>
<bundleId>com.shafersystems.notate</bundleId>
<dict>
<boolean keyName="allowSMB"><defaultValue><value>true</value></defaultValue></boolean>
<boolean keyName="useSMBKerberos"><defaultValue><value>false</value></defaultValue></boolean>
<string keyName="smbConnectionList"><defaultValue><value></value></defaultValue></string>
<string keyName="kerberosConfig"><defaultValue><value></value></defaultValue></string>
</dict>
</managedAppConfiguration>
BlackBerry UEM and Citrix
These consoles show Notate's configuration as a form. Fill in the fields:
|
Field |
What to enter |
|---|---|
|
Windows File Shares ( |
Turn on to allow network drives. |
|
SMB Connection List |
The comma-separated share list. |
|
KRB5.Conf file contents |
The Base64-encoded krb5.conf (Kerberos only). |
What users see
Once the policy reaches the device, provisioned shares appear in the file manager under Network Drives. The first time a user opens a share, Notate asks for a domain user name and password. The user name can be a plain user name, such as jsmith, or domain-qualified, such as EXAMPLE\jsmith or jsmith@example.com. Credentials are saved for each server. Users can disconnect a share under Settings, then Accounts, then Disconnect SMB.
Make sure the tunnel is connected, or set to connect on demand, before the user opens a share. If the device cannot reach the file server (or, for Kerberos, the KDC), the credential prompt fails even with the correct user name and password.
Troubleshooting
Start with Test Connection
Notate has a Test Connection wizard that checks each part of the connection in turn and says which step failed and why. To open it, long-press the server under Network Drives and choose Test Connection, or tap Diagnose… on any network drive error message.
|
Step |
What it checks |
If it fails |
|---|---|---|
|
1. Configuration |
That the settings you delivered through your MDM are valid. |
Check |
|
2. Server name lookup (DNS) |
That the device can turn the server name into an address. |
Usually the VPN is not connected, or it does not carry your internal DNS. |
|
3. File server reachable |
That the file server answers on the network. |
The tunnel's routes must include the file server's subnet on TCP 445. |
|
4. Sign-in server reachable |
Kerberos only: that a domain controller answers. Skipped when you use NTLM. |
The tunnel must reach the domain controllers on port 88. Check the realm (UPPERCASE) and KDC names in krb5.conf, and that the device clock is within five minutes of the domain controller. |
|
5. Connect and open the share |
The end-to-end test. It also reports how the user signed in, for example with Kerberos or with NTLM. |
Check the path in |
Each step passes, warns or fails, and a failed step shows the likely cause. Copy Report puts a plain-text summary of the results on the clipboard, ready to paste into an email or a support request. On managed devices it follows your copy-and-paste data protection policy.
Common fixes
-
Sign-in fails. The user taps Sign In… on the error and enters their password again. If their network password was changed recently, this replaces the old saved password.
-
The VPN dropped. Reconnect it. Notate picks the share up again on its own; there is no need to restart the app.
-
Server names do not resolve. Notate looks up server names through the device's own DNS, so names work whenever the tunnel provides your internal DNS. Connecting by IP address also works.
-
The first connection is slow. The first connection after the app opens can take a few extra seconds while Notate starts its network drive support. Later access is fast.
Raising a support request
If the problem continues, raise a support request and include the Copy Report output from Test Connection. It already says which step failed, how sign-in was attempted and what kind of error occurred. If you can, also collect the Notate logs as described in How do I enable logging in Notate?, and add the device, operating system version and Notate version.