Download presentation
Presentation is loading. Please wait.
Published byRegina Shaw Modified over 9 years ago
1
© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 Version 4.1 ISP Responsibility Working at a Small-to-Medium Business or ISP – Chapter 8
2
2 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Objectives Describe ISP security policies and procedures. Describe the tools used in implementing security at the ISP. Describe the monitoring and managing of the ISP. Describe the responsibilities of the ISP with regard to maintenance and recovery.
3
3 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ISP Security Considerations Helping clients to create secure passwords Securing applications Removing vulnerabilities Configuring firewalls Performing security scans
4
4 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ISP Security Considerations Common security practices: Encrypting data stored on servers Using permissions to secure access Implement user accounts Assign levels of access
5
5 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ISP Security Considerations Three steps used to reduce network vulnerability: Authentication Authorization Accounting
6
6 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ISP Security Considerations Encryption: use the secure version of a protocol whenever confidential data is being exchanged
7
7 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Tools Access control lists and port filtering protect against DoS and DDoS attacks
8
8 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Tools Firewalls use ACLs to control which traffic is passed or blocked
9
9 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Tools Intrusion Detection System (IDS) Intrusion Prevention System (IPS)
10
10 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Tools Wireless security: Changing default settings Enabling authentication MAC filtering Encryption
11
11 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Tools Host-based firewalls control inbound and outbound network traffic
12
12 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Security Tools Targets of host security: Known attacks Exploitable services Worms and viruses Back doors and Trojans
13
13 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Monitoring and Managing the ISP Typical features of a Service Level Agreement (SLA):
14
14 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Monitoring and Managing the ISP Monitoring network link performance
15
15 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Monitoring and Managing the ISP In-band management: Telnet Virtual Terminal (VTY) session Secure Shell (SSH): preferred for security
16
16 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Monitoring and Managing the ISP SNMP enables administrators to gather data about the network Syslog uses syslog clients to generate and forward log messages to syslog servers
17
17 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Backups and Disaster Recovery Factors in choosing backup media: Amount of data Cost of media Performance Reliability Ease of offsite storage
18
18 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Backups and Disaster Recovery Methods of file backup: Normal Differential Incremental
19
19 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Backups and Disaster Recovery How to ensure successful backups: Swap media Review backup logs Trial restores Drive maintenance
20
20 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Backups and Disaster Recovery Use TFTP to protect configurations and Cisco IOS software Restore a Cisco IOS image using TFTP in ROMmon mode
21
21 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Backups and Disaster Recovery Steps to designing an effective recovery plan:
22
22 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Backups and Disaster Recovery Phases to creating and implementing a disaster recovery plan:
23
23 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Summary ISPs provide desktop security services for customers, such as creating passwords, implementing patches and updates, and assigning permissions. Many protocols offer secure versions utilizing digital encryption, which should be used when the data being exchanged is confidential. Port filtering and Access Lists use TCP and UDP port features to permit or deny traffic. Firewalls can utilize hardware or software to define what traffic can come into or go out of parts of a network. ISPs are responsible for providing efficient and effective backup and disaster recovery methods for their customers.
24
24 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.