# File Rules

File Rules allow you to create rules containing either block or allow actions for file extensions, file types or file expressions. File rules are assigned to Spam/Virus/File Policies which in turn are assigned to Internal Recipients.

**Hermes SEG file rules are processed from the top down fashion**. In other words, as a file rule gets processed, block/allow actions on the to of the rule get processed first. If a match is found then the action is taken and all further processing of the rule stops.

### Default System File Rule

Hermes SEG already comes pre-configured with a **Default** System File Rule which is assigned to all the system Spam/Virus/File Policies. The Default System File Rule cannot be edited, it can only be viewed or copied in order to be used as a starting point in creating custom file rules (**Figure 1**).

**Figure 1**

[![image-1609598667051.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598667051.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598667051.png)

### View Default File Rule

**Note: You cannot make any changes to the Default file rule**.

1. Under the **System File Rules** section click on the[![image-1609598674847.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598674847.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598674847.png)icon under the **Actions** column of the **Default** file rule.
2. On the **View File Rule** page, you will see a listing of file types and corresponding actions for those file types (**Figure 2**).

**Figure 2**

[![image-1609598685905.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598685905.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598685905.png)

3. Click on the **Back to File Rules** button on the bottom of the page to return to the File Rules page (**Figure 3**).

**Figure 3**

[![image-1609598693114.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598693114.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598693114.png)

### Create Custom File Rule by copying Default File Rule or any Custom File Rule

This method will allow you to copy the **Default** File Rule or any **Custom File Rule** (assuming there are existing custom file rules) and using it as a starting point for a new custom file rule.

1. Under the **System File Rules** section or the **Custom File Rules** (if there are already existing custom file rules) section, click on the[![image-1609598701594.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598701594.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598701594.png)icon under the **Actions** column of the file rule you wish to copy. You will be redirected to the **Copy File Rule** page in order to create and customize a new file rule based on the file rule you choose (**Figure 4**).

**Figure 4**

[![image-1609598713214.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598713214.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598713214.png)

**Add File Types**

2. On the **Copy File Rule** page, under the **File Type** drop-down field, select a file type. Note that the **File Type** drop-down is organized in sections of HIGH-RISK FILE EXTENSIONS, HIGH RISK FILE TYPES, HIGH RISK MIME TYPES, FILE EXTENSIONS, FILE TYPES, MIME TYPES, OTHER TYPES and CUSTOM-EXPRESSIONS (**Figure 5**).

**Figure 5**

[![image-1609598724470.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598724470.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598724470.png)

3. Under the **Action** field, select either a **Ban** or **Allow** action and then click on the **Add** button (**Figure 6**).

**Figure 6**

[![image-1609598733741.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598733741.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598733741.png)

4. As you add File Types and their associated actions, they show up on the bottom of the **File Types and Actions** to be added section (**Figure 7**).

**Figure 7**

[![image-1609598740135.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598740135.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598740135.png)

5. Continue adding File Types as needed.

**Re-order File Types**

6. Under the **File Types and Actions to be added** section, adjust the order the File Types that appear in the file rule by selecting each file type at a time the clicking on the **Move Up** or **Move Down** buttons as necessary to adjust the order (**Figure 8**).

**Figure 8**

[![image-1609598747724.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598747724.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598747724.png)

**Delete File Types**

7. Under the **File Types and Actions to be added** section, delete file types by selecting each file type at a time the clicking on delete button (**Figure 8**).

**Create File Rule Name**

8. Under the **Enter a name for this File Rule** field, enter a unique name for this rule and click the **Add Rule** button below (**Figure 9**). You will be redirected back to the **File Rules** page.

**Figure 9**

[![image-1609598760167.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598760167.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598760167.png)

9. Back at the **File Rules** page, the new rule will appear under the **Custom File Rules** section (**Figure 10**).

**Figure 10**

[![image-1609598768192.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598768192.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598768192.png)

### Create Custom File Rule

This method will allow you to create a new blank Custom File Rule.

1. Under the **Custom File Rules** section, click on Create Custom File Rule button (**Figure 11**).

**Figure 11**

[![image-1609598776616.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598776616.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598776616.png)

2. You will be redirected to the **Create File Rule** page in order to create and customize a new file rule (**Figure 12**).

**Figure 12**

[![image-1609598783553.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598783553.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598783553.png)

**Add File Types**

3. On the **Create File Rule** page, under the **File Type** drop-down field, select a file type. Note that the **File Type** drop-down is organized in sections of HIGH-RISK FILE EXTENSIONS, HIGH RISK FILE TYPES, HIGH RISK MIME TYPES, FILE EXTENSIONS, FILE TYPES, MIME TYPES, OTHER TYPES and CUSTOM-EXPRESSIONS (**Figure 13**).

**Figure 13**

[![image-1609598793558.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598793558.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598793558.png)

4. Under the **Action** field, select either a **Ban** or **Allow** action and then click on the **Add** button (**Figure 14**).

**Figure 14**

[![image-1609598802692.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598802692.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598802692.png)

5. As you add File Types and their associated actions, they show up on the bottom of the **File Types and Actions** to be added section (**Figure 15**).

**Figure 15**

[![image-1609598810455.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598810455.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598810455.png)

6. Continue adding File Types as needed.

**Re-order File Types**

7. Under the **File Types and Actions to be added** section, adjust the order the File Types that appear in the file rule by selecting each file type at a time the clicking on the **Move Up** or **Move Down** buttons as necessary to adjust the order (**Figure 16**).

**Figure 16**

[![image-1609598817185.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598817185.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598817185.png)

**Delete File Types**

8. Under the **File Types and Actions to be added** section, delete file types by selecting each file type at a time the clicking on delete button (**Figure 16**).

**Create File Rule Name**

9. Under the **Enter a name for this File Rule** field, enter a unique name for this rule and click the **Add Rule** button below (**Figure 17**). You will be redirected back to the **File Rules** page.

**Figure 17**

[![image-1609598826327.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598826327.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598826327.png)

10. Back at the **File Rules** page, the new rule will appear under the **Custom File Rules** section (**Figure 18**).

**Figure 18**

[![image-1609598832491.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598832491.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598832491.png)

### Edit Custom File Rule

**Note: ONLY Custom File Rules can be edited.**

1. Under the **Custom File Rules** section, click on the[![image-1609598839739.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598839739.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598839739.png)icon of the Custom File Rule you wish to edit.
2. You will be redirected to the **Edit File Rule** page in order to customize the file rule (**Figure 19**).

**Figure 19**

[![image-1609598852022.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598852022.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598852022.png)

**Add File Types**

3. On the **Edit File Rule** page, under the **File Type** drop-down field, select a file type. Note that the **File Type** drop-down is organized in sections of HIGH-RISK FILE EXTENSIONS, HIGH RISK FILE TYPES, HIGH RISK MIME TYPES, FILE EXTENSIONS, FILE TYPES, MIME TYPES, OTHER TYPES and CUSTOM-EXPRESSIONS (**Figure 20**).

**Figure 20**

[![image-1609598864209.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598864209.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598864209.png)

4. Under the **Action** field, select either a **Ban** or **Allow** action and then click on the **Add** button (**Figure 21**).

**Figure 21**

[![image-1609598870906.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598870906.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598870906.png)

5. As you add File Types and their associated actions, they show up on the bottom of the **File Types and Actions** to be added section (**Figure 22**).

**Figure 22**

[![image-1609598876674.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598876674.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598876674.png)

6. Continue adding File Types as needed.

**Re-order File Types**

7. Under the **File Types and Actions to be added** section, adjust the order the File Types that appear in the file rule by selecting each file type at a time the clicking on the **Move Up** or **Move Down** buttons as necessary to adjust the order (**Figure 23**).

**Figure 23**

[![image-1609598884097.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598884097.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598884097.png)

**Delete File Types**

8. Under the **File Types and Actions to be added** section, delete file types by selecting each file type at a time the clicking on delete button (**Figure 23**).

**Edit File Rule Name**

9. Under the **Name of the File Rule** field, enter a unique name for this rule and click the **Save Rule** button below (**Figure 24**). You will be redirected back to the **File Rules** page.

**Figure 24**

[![image-1609598894060.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598894060.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598894060.png)

10. Back at the **File Rules** page, the new rule will appear under the **Custom File Rules** section (**Figure 25**).

**Figure 25**

[![image-1609598900893.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598900893.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598900893.png)

### Delete Custom File Rule

**Note: ONLY Custom File Rules that are NOT associated with with a File/Virus/Spam Policy can be deleted. When deleting a Custom File Rule, the system will NOT prompt you to confirm, it will be deleted immediately.**

1. Under the **Custom File Rules** section, click on the[![image-1609598915468.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598915468.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598915468.png)icon of the Custom File Rule you wish to delete.
2. The system will delete the Custom File Rule and re-direct you back to the File Rules page (**Figure 26**)

**Figure 26**

[![image-1609598909166.png](https://docs.deeztek.com/uploads/images/gallery/2021-01/scaled-1680-/image-1609598909166.png)](https://docs.deeztek.com/uploads/images/gallery/2021-01/image-1609598909166.png)