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
134 ServerIron ADX Security Guide
53-1002440-03
DDoS protection
5
Displaying security filter statistics
You can display security filter statistics as shown.
The counters shown for the show security filter-statistics command display the DDoS attack types
and the number of packets that have been counted, logged or dropped for each type.
Syntax: show security filter-statistics
Address-sweep and port-scan logging
The ServerIron ADX provides a log message for address-sweep and port-scan. When the ServerIron
ADX detects either of these attacks, the SSM CPU will send a message to the MP indicating the
particular IP will be held down for the specified time interval.
Log example:
Security: Address-sweep attack detected!Holdown 10.10.1.101 for 2 min
ServerIronADX# show security filter-statistics
Filter |Type |Log Cnt |Drop Cnt
dos-filter |icmp-type |0 |0
Cumulative Statistics
attack-type = log-count, drop-count
ip-options = 0, 0
icmp-type = 0, 0
address-sweep = 0, 0
port-scan = 0, 0
generic = 0, 0
filter-dns = 0, 0
Attack-type = Attack-count
ipv6-ext-header = 1201
icmpv6-type-All = 321
icmpv6-type-NS = 221
icmpv6-type -NA = 60
icmpv6-type-RS = 24
icmpv6-type-RA = 16
large-icmp = 0
unknown-ip-proto = 0
xmas-tree = 0
tcp-no-flags = 0
syn-fragments = 0
syn-and-fin-set = 0
deny-all-fragments = 0
fin-with-no-ack = 0
icmp-fragment = 0
land-attack = 0
ping-of-death = 0