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ACL-Syntax - Syntax of ACL file
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| Syntax of the ACL File |
| ==================== |
| A line of the Access Control List (ACL) must have the following |
| syntax: |
| <permit|deny> <IP_address[/mask]> [tracelevel] [# comment]
| |
| The following applies for the values in the line: |
| - permit allows a connection, deny forbids a connection. |
| - <IP_address> The IP address must be a IPv4 or IPv6 address in the |
| following format: |
| IPv4: 4 byte, decimal, '.' separated: for example 10.11.12.13 |
| IPv6: 16 byte, hexadecimal, ':' separated. '::' is supported |
| - <mask> If you specify a mask, it must be a subnet |
| prefix mask: |
| IPv4: 0-32 |
| IPv6: 0-128 |
| - <tracelevel> Trace level at which hits (matches for the addresses, |
| taking into account the subnet masks) for the ACL are written to |
| the relevant trace file (default value 2). |
| - <# comment> Comment lines start with a number sign (#). |
| - The file can contain empty lines. |
| - A general deny rule is automatically inserted as the last rule. |
| For the avoidance of doubt, however, you should still enter an |
| explicit 'deny' as the final rule. |
| - The rules are checked sequentially, starting from the top |
| ("top down"). |
| - The first applicable rule determines the result ("first match"). |
| |
| Example File |
| ============= |
| permit 10.1.2.0/24 # permit client network |
| permit 192.168.7.0/24 # permit server network |
| permit 10.0.0.0/8 1 # screening rule |
| # (learning mode, trace level 1) |
| permit 2001:db8::1428:57ab # permit IPv6 host |
| deny 0.0.0.0/0 # deny the rest |
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| Short Description : Syntax of ACL file
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| Applications Area : System
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| Parameter Type : X
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| Changes allowed : E
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| Valid for Operating System : *
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| Dynamic switchable :
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| Same on all Servers :
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This documentation is copyright by SAP AG.
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