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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
140 ServerIron ADX Security Guide
53-1002440-03
Configuring SSL on a ServerIron ADX
6
Configuring SSL on a ServerIron ADX
When configuring a ServerIron ADX for either SSL Termination mode or SSL Proxy mode, you must
perform each of the following configuration tasks:
• Obtain a Keypair File – This section describes how to obtain an SSL asymmetic key pair. You
can generate an RSA key pair or import an existing key pair. See “Obtaining a ServerIron ADX
keypair file” on page 140.
• Certificate Management – This section describes various methods for obtaining a digital
certificate and the methods for importing Keys and Certificates. See “Certificate management”
on page 141.
• Basic SSL Profile Configuration – This section describes how to perform the minimum SSL
profile configuration. See “Basic SSL profile configuration” on page 164.
• Advanced SSL Profile Configuration – This section describes additional SSL profile
configuration parameters. See “Advanced SSL profile configuration” on page 166.
• Configure Real and Virtual Servers for SSL Termination and Proxy Mode – This section
describes the configuration details required to configure the Real and Virtual servers for SSL
on a ServerIron ADX. See “Configuring Real and Virtual Servers for SSL Termination and Proxy
Mode” on page 172.
• Configuring Other Protocols with SSL– This section describes how to configure other popular
protocols such as LDAPS, POP3S and IMAPS with SSL acceleration. See “Other protocols
supported for SSL” on page 184
• Configure System Max Values – This section describes how to configure system max values for
SSLv2 connection rate and memory limit for SSL hardware buffers. See “Configuring the
system max values” on page 185.
Obtaining a ServerIron ADX keypair file
The keypair file specifies the location for retrieving the SSL asymmetric key pair, during an SSL
handshake. You can either generate an RSA keypair file on a ServerIron ADX or import a
pre-existing key pair, using secure copy (SCP).The key pair is stored in the flash memory and is not
deleted during a power cycle.
To generate an RSA keypair file, enter the following command.
ServerIronADX# ssl genrsa rsakey-file 1024 mypassword
Syntax: ssl genrsa <file-name> <key-strength> <password>
The <file-name> variable specifies the name of the keypair file. The file name can be up to 24
characters in length. The file name supports special characters like ’-’,’ _’, ’$’, ", ’%’, ’&’, and ’!’. It
does not support spaces and ’/’ characters.
The <key-strength> variable specifies the Key strength (number of bits) for the RSA key pair. The
RSA key strength should be 512, 768, 1024 or 2048.
NOTE
The ServerIron ADX does not support key strength greater than 2048 bits.
The <password> variable specifies the password to the file. The length of password should not
exceed 64 characters.