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
6 ServerIron ADX Security Guide
53-1002440-03
Peak BP utilization with TRAP
1
ServerIronADX# server prioritize-mgmt-traffic 1.1.1.1 255.255.255.0 200.1.1.1 6
80
Prioritization of TCP port 80 traffic to management IP 200.1.1.1 from any source IP address
ServerIronADX# server prioritize-mgmt-traffic any 200.1.1.1 6 80
Prioritization of UDP port 2222 traffic to management IP 200.1.1.1
ServerIronADX# server prioritize-mgmt-traffic 1.1.1.1 255.255.255.0 200.1.1.1 17
2222
Prioritization of IP protocol 89 (OSPF) traffic to management IP 200.1.1.1
ServerIronADX# server prioritize-mgmt-traffic 1.1.1.1 255.255.255.0 200.1.1.1 89
Protection against attack in hardware
ServerIron ADX allows for protection against attack in hardware without impacting MP or BP CPU
utilization. Configure the server the drop-all-mgmt-access command to drop all traffic destined to a
specified management IP address.
The following command drops all traffic destined to the management IP address 10.45.16.104.
ServerIronADX(config)# server drop-all-mgmt-access 10.45.16.104
Syntax: [no] server drop-all-mgmt-access <destination ip>
NOTE
For a router, the destination IP address is the physical or ve interface IP address For a switch, the
destination IP address is the management IP address.
The server drop-all-mgmt-access feature when used in combination with the server
prioritize-mgmt-traffic feature allows you to prioritize valid traffic while blocking unwanted traffic
destined to the management IP address.
For example, with the following configuration, only ssh, telnet and http traffic destined to
management IP address 10.45.16.104 will be prioritized and all other traffic destined to
10.45.16.104 will be dropped.
ServerIronADX(config)#server prioritize-mgmt-traffic 1.1.1.1 255.255.255.0
10.45.16.104 6 22
ServerIronADX(config)#server prioritize-mgmt-traffic 1.1.1.1 255.255.255.0
10.45.16.104 6 23
ServerIronADX(config)#server prioritize-mgmt-traffic 1.1.1.1 255.255.255.0
10.45.16.104 6 80
ServerIronADX(config)#server drop-all-mgmt-access 10.45.16.104
Peak BP utilization with TRAP
Show CPU-utilization command enhancement
The show cpu-utilization command displays CPU utilization peaks since the system boot or the last
reset of counters (using the clear cpu utilization command).
The command, clear cpu-utilization, on both the MP and the BP is used to reset the counter.