Home Theater Server User Manual
Table Of Contents
- Contents
- About This Document
- Network Security
- TCP SYN attacks
- IP TCP syn-proxy
- Granular application of syn-proxy feature
- Syn-def
- No response to non-SYN first packet of a TCP flow
- Prioritizing management traffic
- Peak BP utilization with TRAP
- Transaction Rate Limit (TRL)
- Understanding transaction rate limit
- Configuring transaction rate limit
- Configuring the maximum number of rules
- Saving a TRL configuration
- Transaction rate limit command reference
- Global TRL
- TRL plus security ACL-ID
- security acl-id
- Transaction rate limit hold-down value
- Displaying TRL rules statistics
- Displaying TRL rules in a policy
- Displaying IP address with held down traffic
- Refusing new connections from a specified IP address
- HTTP TRL
- Overview of HTTP TRL
- Configuring HTTP TRL
- Displaying HTTP TRL
- Display all HTTP TRL policies
- Display HTTP TRL policy from index
- Display HTTP TRL policy client
- Display HTTP TRL policy starting from index
- Display HTTP TRL policy matching a regular expression
- Display HTTP TRL policy client index (MP)
- Display HTTP TRL policy client index (BP)
- Display HTTP TRL policy for all client entries (BP)
- Downloading an HTTP TRL policy through TFTP
- HTTP TRL policy commands
- Logging for DoS Attacks
- Maximum connections
- clear statistics dos-attack
- Maximum concurrent connection limit per client
- Firewall load balancing enhancements
- Syn-cookie threshhold trap
- Service port attack protection in hardware
- Traffic segmentation
- DNS attack protection
- Access Control List
- How ServerIron processes ACLs
- Default ACL action
- Types of IP ACLs
- ACL IDs and entries
- ACL entries and the Layer 4 CAM
- Configuring numbered and named ACLs
- Modifying ACLs
- Displaying a list of ACL entries
- Applying an ACLs to interfaces
- ACL logging
- Dropping all fragments that exactly match a flow-based ACL
- Enabling ACL filtering of fragmented packets
- Enabling hardware filtering for packets denied by flow-based ACLs
- Enabling strict TCP or UDP mode for flow-based ACLs
- ACLs and ICMP
- Using ACLs and NAT on the same interface (flow-based ACLs)
- Displaying ACL bindings
- Troubleshooting rule-based ACLs
- IPv6 Access Control Lists
- Network Address Translation
- Syn-Proxy and DoS Protection
- Understanding Syn-Proxy
- Configuring Syn-Proxy
- DDoS protection
- Configuring a security filter
- Configuring a Generic Rule
- Configuring a rule for common attack types
- Configuring a rule for ip-option attack types
- Configuring a rule for icmp-type options
- Configuring a rule for IPv6 ICMP types
- Configuring a rule for IPv6 ext header types
- Binding the filter to an interface
- Clearing DOS attack statistics
- Clearing all DDOS Filter & Attack Counters
- Logging for DoS attacks
- Displaying security filter statistics
- Address-sweep and port-scan logging
- Secure Socket Layer (SSL) Acceleration
- SSL overview
- SSL acceleration on the ServerIron ADX
- Configuring SSL on a ServerIron ADX
- Basic SSL profile configuration
- Advanced SSL profile configuration
- Configuring Real and Virtual Servers for SSL Termination and Proxy Mode
- Configuration Examples for SSL Termination and Proxy Modes
- SSL debug and troubleshooting commands
- Displaying socket information
ServerIron ADX Security Guide 61
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Configuring numbered and named ACLs
2
NOTE
The out option is not supported in the rule-based ACL mode.
The precedence <name> | <num> parameter of the ip access-list command specifies the IP
precedence. The precedence option for of an IP packet is set in a three-bit field following the
four-bit header-length field of the packet’s header. You can specify one of the following:
• critical or 5 – The ACL matches packets that have the critical precedence. If you specify the
option number instead of the name, specify number 5.
• flash or 3 – The ACL matches packets that have the flash precedence. If you specify the option
number instead of the name, specify number 3.
• flash-override or 4 – The ACL matches packets that have the flash override precedence. If you
specify the option number instead of the name, specify number 4.
• immediate or 2 – The ACL matches packets that have the immediate precedence. If you
specify the option number instead of the name, specify number 2.
• internet or 6 – The ACL matches packets that have the internetwork control precedence. If you
specify the option number instead of the name, specify number 6.
• network or 7 – The ACL matches packets that have the network control precedence. If you
specify the option number instead of the name, specify number 7.
• priority or 1 – The ACL matches packets that have the priority precedence. If you specify the
option number instead of the name, specify number 1.
• routine or 0 – The ACL matches packets that have the routine precedence. If you specify the
option number instead of the name, specify number 0.
The tos <name> | <num> parameter of the ip access-list command specifies the IP ToS. You can
specify one of the following:
• max-reliability or 2 – The ACL matches packets that have the maximum reliability ToS. The
decimal value for this option is 2.
• max-throughput or 4 – The ACL matches packets that have the maximum throughput ToS. The
decimal value for this option is 4.
• min-delay or 8 – The ACL matches packets that have the minimum delay ToS. The decimal
value for this option is 8.
• min-monetary-cost or 1 – The ACL matches packets that have the minimum monetary cost
ToS. The decimal value for this option is 1.
NOTE
This value is not supported on 10 Gigabit Ethernet modules.
• normal or 0 – The ACL matches packets that have the normal ToS. The decimal value for this
option is 0.
• <num> – A number from 0 – 15 that is the sum of the numeric values of the options you want.
The ToS field is a four-bit field following the Precedence field in the IP header. You can specify
one or more of the following. To select more than one option, enter the decimal value that is
equivalent to the sum of the numeric values of all the ToS options you want to select. For
example, to select the max-reliability and min-delay options, enter number 10. To select all
options, select 15.
The ip-pkt-len <value> parameter filters ICMP packets based on the IP packet length. The device
uses the <value> to match the total length field in the IP header of ICMP packets. You can specify a
value from 1 – 65535.