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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
ServerIron ADX Security Guide 131
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DDoS protection
5
Configuring a rule for IPv6 ICMP types
ServerIron ADX has a set of built-in rules to manage IPv6 icmp types. In this case, the rule
command is used with a <icmp-option> variable specified in Table 16.
The following example configures the "filter4" security filter with a rule to drop packets that
acontain the icmpv6-option type echo-reply.
ServerIronADX(config)# security filter filter4
ServerIronADX(config-sec-filter4)#rule icmp-type echo-reply drop
Syntax: [no] rule ip-option <icmpv6-type> [log | no-log] [drop | no-drop]
The <ipv6-type> variable is specified as one of the options described in Table 16.
The log parameter directs the ServerIron ADX to drop traffic on the bound interface that matches
the rule specified by the configured <icmpv6-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 <icmpv6-type>. The no-drop parameter disables this function
icmp-type router-advertisement icmp type 9: router-advertisement
icmp-type r outer-selection icmp type 10: router-selection
icmp-type source-quench icmp type 4: source-quench
icmp-type time icmp type 11: time-exceeded
icmp-type timestamp icmp type 13: timestamp
icmp-type timestamp-reply icmp type 14: timestamp-reply
TABLE 15 icmp option types and descriptions
TABLE 16 ICMPv6 types and descriptions
Attack Type Description
cpa ICMP type 149: Certification Path Advertisement.
cps ICMP type 148: Certification Path Solicitation
echo-reply ICMP type 129: echo-reply
echo-request ICMP type 148: echo-request
mra ICMP type 151: Multicast Router Advertisement
mrs ICMP type 152: Multicast Router Solicitation
mrt ICMP type 153: Multicast Router Termination
neighbor-advertisement ICMP type 136: neighbor-advertisement
neighbor-solicitation ICMP type 135: neighbor-solicitation
private ICMP type 200: Private experimentation
private1 ICMP type 201: Private experimentation
redirect-message ICMP type 137: redirect-message