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

ServerIron ADX Security Guide 109
53-1002440-03
Displaying NAT information
4
Syntax: show ip nat statistics
TABLE 7 Display fields for show ip nat statistics
This field... Displays...
send nat unreachable (tcp fwd) Indicates the number of times that a “port unreachable” message was
generated for NAT TCP forward traffic.
nat tcp no ports avl Indicates the number of times that a “port unreachable” message was
generated because the ServerIron could not get a port from the port pool for
a NAT IP for TCP forward traffic.
nat tcp status zero Indicates the number of times that an error in NAT translation for TCP forward
traffic.
nat tcp ip status zero Indicates errors in NAT translation for TCP forward traffic.
nat tcp usr index null Indicates the number of times that a “port unreachable” message was
generated because the ServerIron could not create a user session for TCP
forward traffic.
send nat unreachable (tcp rev) Indicates the number of times that a “port unreachable” message was
generated for TCP reverse traffic.
nat tcp rev no ports avl Indicates the number of times that a “port unreachable” message was
generated because the ServerIron could not get a port from the port pool for
an IP NAT for TCP reverse traffic.
nat tcp rev status zero Indicates the number of times that an error in NAT translation for TCP reverse
traffic has occurred.
nat tcp rev ip status zero Indicates the number of times that an error in NAT translation for TCP reverse
traffic has occurred.
nat tcp rev usr index null Indicates the number of times that a “port unreachable” message was
generated because the ServerIron could not create a user session for TCP
reverse traffic.
send nat unreachable (udp fwd) Indicates the number of times that a “port unreachable” message was
generated for UDP forward traffic.
nat udp fwd no ports avl Indicates the number of times that a “port unreachable” message was
generated because the ServerIron could not get a port from the port pool for
a NAT IP for UD forward traffic.
nat udp fwd status zero Indicates the number of times that an error in NAT translation for UDP
forward traffic has occurred.
nat udp fwd status zero Indicates the number of times that an error in NAT translation for UDP
forward traffic has occurred.
nat udp fwd usr index null Indicates the number of times that a “port unreachable” message was
generated because the ServerIron could not create a user session for UDP
forward traffic.
send nat unreachable (udp rev) Indicates the number of times that a “port unreachable” message was
generated for UDP reverse traffic because the Serveriron could not get a port
from the port pool for a NAT IP.
nat udp rev no port avl Indicates the number of times that a “port unreachable” message was
generated because the ServerIron could not get a port from the port pool for
a NAT IP for UDP reverse traffic.
nat udp rev status zero Indicates the number of times that an error in NAT translation for UDP reverse
traffic has occurred.










