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Oracle SBC Security Guide
Define a number to set the maximum rate of call (per second) this session agent will allow. Once
the rate limit is reached, the SBC will start rejecting new service with 503 Exceed Constraints
until the number of seconds in time-to-resume has elapsed.
max-sustain-rate - Z
In general, set this to the average call rate (per second) which that SA can sustain. Once the
average rate limit calculated in
(Calls made in current + previous window) / Delta (current second – start of previous window),
exceeds the limit Z , the SBC will be start rejecting new service with 503 Exceed Constraints
until the number of seconds in time-to-resume has elapsed.
session-router->access-control
Parameter
Realm
Realm
realm-id
peer
core
source-address
n.n.n.n/[mask bit is
optional]
(peer SA IP, or non-SA IP)
[m.m.m.m]/ [mask bit is
optional]
(core SA IP or non-SA IP)
application-protocol
SIP
SIP
transport
ALL
ALL
access
permit
permit
trust-level
high
high
minimum-reserved-bandwidth
0
0
invalid-signal-threshold
0
0
maximum-signal-threshold
0
0
untrusted-signal-threshold
0
0
deny-period
30
30
In core realm, it is recommended to configure an access-control on per session-agent basis instead of
putting it into a single source-subnet/mask. That will give the core session-agent its own flow versus
sharing one flow for multiple devices or the entire subnet.
DDOS Configuration Parameter Settings
Below are the recommended parameters setting for each platform in a SIP Peering model. The non-
default values are in bold.
Changes under media-manager require system reboot to take effect. Be sure to follow precautions to
reboot SBC(s) to unnecessary service outage during this execution.
- 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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