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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
132 ServerIron ADX Security Guide
53-1002440-03
DDoS protection
5
Configuring a rule for IPv6 ext header types
ServerIron ADX has a set of built-in rules to manage IPv6 header types. In this case, the rule
command is used with a <ipv6-ext-header-type > variable specified in Table 17.
The following example configures the "filter5" security filter with a rule to drop packets that contain
the ipv6-ext-header type esp.
ServerIronADX(config)# security filter filter5
ServerIronADX(config-sec-filter5)#rule ipv6-ext-header-type esp drop
Syntax: [no] rule ipv6-ext-header-type <ipv6-ext-header-type> [log | no-log] [drop | no-drop]
The <ipv6-ext-header-type> variable is specified as one of the options described in Table
17.
The log parameter directs the ServerIron ADX to drop traffic on the bound interface that matches
the rule specified by the configured <ipv6-ext-header-type>. The no-log parameter disables
this function.
The drop parameter directs the ServerIron ADX to drop traffic on the bound interface that matches
the rule specified by the configured <ipv6-ext-header-type>. The no-drop parameter
disables this function
reserved ICMP type 255: reserved for expansion
router-advertisement ICMP type 134: router-advertisement
router-solicitation ICMP type 133: router-solicitation
TABLE 17 IPv6 ext header types and descriptions
Attack Type Description
ah Authentication Header Option
cfg-hdr0-num Configurable extension header code 0
cfg-hdr1-num Configurable extension header code 1
cfg-hdr2-num Configurable extension header code 2
cfg-hdr3-num Configurable extension header code 3
destination-option Destination Options (with Routing Options)
esp Encapsulation Security Payload Header
hop-by-hop Hop-by-Hop option
mobility-header Mobility Header option
no-next-header No Next Header
routing-header Routing Header option
unknown-header Unknown headers are those that are not listed in the above header types
and TCP/UDP/ICMPv6.
TABLE 16 ICMPv6 types and descriptions