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Oracle SBC Security Guide
Appendix I: Syslog
The SBC can be configured to send system event logs to logging servers [1]. It is recommended to
configure as few logging servers as required to reduce impact on SBC performance. Monitoring via
SNMP is the preferred option over using syslog. The syslog messages aren’t as efficient since they may
contain many extraneous informational messages that need to be filtered out or parsed. SNMP on the
other hand has the advantage of sending clearly defined trap notifications only in the event of a problem,
and the system-config and trap-receiver settings can be configured to filter on specific SNMP traps to
send.
If a syslog parser is used to escalate SBC issues, it is easy to classify syslog events preceded with a
MAJOR or CRITICAL designation as issues that require further investigation. However, be cautious of
writing any parsing rules for events that are classified as GENERAL, REDUNDANCY, CONFIG
WARNING, ERROR, or MINOR (among others). Some of these may be important to escalate, but others
may be strictly informational in nature.
The table below represents a sample of some of the common syslog messages that may be seen. Note that
IDS_LOG examples given require the IDS Reporting Feature Group license discussed in Section 0. Some
of the examples may seem redundant. This is because in some cases more than one message may be
written to syslog as a result of an event.
Description
Raw message
A failed login attempt was detected
on the console port.
May 3 17:06:10 172.41.3.90 CSE-4500-20
acliConsole[31ac9b6c] AUTH
authenticate_locally: Authentication failed
for user user
OR
Mar 20 10:27:24.119 acliConsole@: AUTH[53]
authenticate_locally: Authentication failed
for user user
OR
May 3 17:06:10 172.41.3.90 CSE-4500-20
acliConsole[31ac9b6c] WARNING login
authentication failure from acliConsole
A failed login attempt was detected
over telnet, SSH or FTP. See the
process information for further
details.
Dec 18 13:39:44.121 acliTelnet0@SBC1: WARNING
authentication failure for admin from
acliTelnet0
- SECURITY GUIDE 1
- Contents 3
- Related Documentation 7
- Part 1: Overview 8
- Figure 1: Net-SAFE Framework 9
- General Security Principles 10
- Monitor System Activity 11
- Session Border Controller 13
- Unified Session Manager 14
- Core Session Manager 15
- Session Router 16
- Realm Design Considerations 16
- Management Interfaces 17
- Passwords 18
- Boot Flags 18
- System ACLs 19
- Telnet/SSH 19
- FTP/SFTP 19
- GUI Management 19
- Resiliency 20
- Physical Link Redundancy 21
- Part 3: Security Features 22
- Security Specific Licenses 24
- Features 26
- Configuring AAA Integration 27
- SIP Interface Security 28
- Service ACLs 29
- TLS for SIP 31
- IPsec for SIP 33
- Call Admission Control (CAC) 34
- Media Policing 35
- DoS/DDoS Prevention 35
- Attack Tool Prevention 36
- Lawful Interception 36
- Part 4: Appendices 37
- Appendix B: Port Matrix 38
- Configuration Models: 40
- Supported platforms 40
- Configuration Parameters 40
- Realm Configuration 41
- SIP Interface 41
- Observations/Limitations 49
- Overview 61
- Deployment Archetypes 61
- Scanner Mitigation 63
- Peering Environments 68
- IDS License Details 70
- Dependencies 70
- Statistics 71
- SNMP MIB OIDS 71
- SNMP Traps 72
- Constraints Limiting 75
- Session-Constraints 75
- Rate constraints 76
- Message Rejections 78
- SNMP support 79
- Log Action 79
- Blacklist Table Maintentance 86
- SNMP OIDs 88
- System Management Statistics 88
- Realm Statistics 89
- Environmental Statistics 90
- Enterprise SNMP Traps 90
- SNMP Traps in HA environment 93
- Appendix I: Syslog 94
- Call Detail Records (CDR) 102
- Oracle SBC Security Guide 103
- System Statistics 106
- Application Statistics 106
- Introduction 108
- SRTP Topologies 108
- Requirements 110
- Design Aspects 111
- Secured/Unsecured Network 114
- Troubleshooting 122
- References 142
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