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 207
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Displaying socket information
6
Displaying TCP and IP statistics
Use the show tcp-ip statistics command in rconsole mode to display TCP and IP statistics as shown
in the following.
ServerIronADX# rconsole 1 1
ServerIronADX1/1# show tcp-ip statistics
Driver Layer:
Rx cnt : 405603 Pkt mem alloc fail : 0
Tx cnt : 445200 No tx buffers : 0
Tx frame data too big : 0 Tx hdrs too long : 0
Tx Seg no data : 0 Tx seg w/ data : 0
Tx Seg chunked : 0
IP (rx) Layer:
Rx Cnt : 405603 Fwd to upper layer : 405603
Cksum error : 0 Bad options : 0
Bad protocol : 0 Pkt truncated : 0
Bad header : 0
Rx frag : 0 Frag reassm ok : 0
Frag tmr alloc fail : 0 Frag mem alloc fail : 0
Frag max num reached : 0 Frag max size reached : 0
Frag dup data rx : 0
IP (tx) Layer:
Rx from upper layer : 447386 dest unreach : 2186
TCP (rx) Layer:
Rx cnt : 405603 Rx bad ctl flags : 0
Rx SYN : 24190 Rx SYN-ACK : 19793
Rx FIN : 35310 Rx RST : 62
Duplicate Seg (full) : 5161 Duplicate Seg (part) : 0
Rx seg out of wnd (full) : 0 Rx seg out of wnd (part) : 0
Cksum error (HW verified) : 0 Cksum error (SW verified) : 0
Bad hdr len : 0 Bad data truncation : 0
PAWS bad timestamp : 0 Rx zero wnd probe : 0
Rx Q corrupt : 0 Rx unacceptable seg : 7
TCP (tx) Layer:
Rx from upper layer : 137910 Retransmitting seg : 24766
Tx SYN : 47562 Tx SYN-ACK : 25460
Tx FIN : 38338 Tx RST : 9194
Bad socket num : 0 Bad data buffer : 0
Bad data len : 0 Sock send err : 0
Sock already closed : 0 Connection not estab : 0
Data too big : 0 Tx Q full : 0
Tx busy : 0 Send wnd shrunk : 896
Tx Q corrupt : 0 Tx zero wnd probe : 0
Syntax: show tcp-ip statistics