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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 111
53-1002440-03
Displaying NAT information
4
Displaying NAT redundancy information
You can display information about the state of the static NAT IP or NAT pool (dynamic), the MAC
address used, and the configured priority. The MAC address used for the NAT IP is a special
construct, where the last 3 bytes of the MAC address are derived from the shared NAT IP address
(similar to the symmetric MAC).
To display NAT redundancy information, enter the following command.
The two “Priority” options are “High” and “Low”. That is, 2 or 1.
The two “State” options are “Active” and “standby”.
TABLE 8 Display fields for show ip nat translation
This field... Displays...
Pro When PAT is enabled, this field indicates the protocol NAT is using to uniquely
identify the host. NAT can map the same IP address to multiple hosts and use
the protocol port to distinguish among the hosts. This field can have one of the
following values:
• tcp – In addition to this IP address, NAT is associating a TCP port with the
host on the private network.
• udp – In addition to this IP address, NAT is associating a UDP port with the
host on the private network.
Inside global The Internet address mapped to the private address listed in the Inside local
field for inside NAT.
Inside local The private address mapped to the Internet private address listed in the Inside
global field for inside NAT.
Outside global The destination of the traffic. If PAT is enabled, the TCP or UDP port also is
shown.
NOTE: Outside NAT is not supported.
Outside local The destination of the traffic. If PAT is enabled, the TCP or UDP port also is
shown.
NOTE: Outside NAT is not supported.
ServerIronADX# show ip nat redundancy (on active)
NAT Pool Start IP: 10.1.1.150 Mac address: 020c.db01.0196
State: Active Priority: High
NAT Pool Start IP: 10.1.1.91 Mac address: 020c.db01.015b
State: Active Priority: High
NAT Pool Start IP: 10.1.1.92 Mac address: 020c.db01.015c
State: Active Priority: High
NAT Pool Start IP: 10.1.1.95 Mac address: 020c.db01.015f
State: Active Priority: High