At present, no available publication deals with Internet security from a Cisco perspective utilizing the Cisco Secure product family. Cisco Secure Internet Security Solutions covers the basics of Internet security and then concentrates on each member of the Cisco Secure product family, providing a rich explanation with examples of the preferred configurations required for securing Internet connections.
Cisco Security Specialist's Guide to PIX Firewall immerses the reader in the highly complicated subject of firewall implementation, deployment, configuration, and administration. This guide will instruct the reader on the necessary information to pass the CSPFA exam including protocols, hardware, software, troubleshooting and more.
Part 1 of the book serial ebook Cisco security architectures to part 2 of you will continue to learn about relevant issues such as: Cisco router access lists, advanced cisco router security features, Non-IP access lists, the cisco PIX.
Perform regularly scheduled tests of your new system. Such tests should be performed by both internal and
external parties. You may chose to perform quarterly or bi-annual internal tests and annual audits by an external
entity. Of course, no system is perfect, so expect to have areas for improvement discovered as a result of
these tests. These areas of improvement lead us to the final step in the security lifecycle.
IPS/HIPS provide for an increased level of protection not available from a static access list or stateful firewall
inspection. IPS and HIPS offer security by sensing abnormalities in traffic communications or protocol, and
packet behaviors that are known to have malicious objectives. Here are some recommendations for installing
and hardening your IPS sensors:
This paper is the second in a three-part series of white papers, each of which focuses on a functional area of
securing your network. As introduced in the first installment, network security should be implemented throughout
your entire network. Take a layered approach and introduce security at every layer possible. This second
paper will suggest steps to secure your Router, Firewall, and Virtual Private Network (VPN) Concentrators.
Theo Bugtrap loan báo năm 1999, các hệ thống của Cisco đều gặp phải lỗi Leakage Vul. Nó sẽ
phản hồi trở lại yêu cầu TCP SYN trên cổng 1999. Lợi dụng điều này, kẻ tấn công có thể do thám
của bạn bằng cách quét TCP trên cổng 1999. Hãy xem nmap có làm được gì?
What is a VPN?
Cisco Documentation on VPN
• A VPN is a Virtual Private Network
• Now, as more and more companies need access for remote users, mobile
users or remote offices, your current architecture can be augmented with a
• A Virtual Private Network is a network that’s created by encryption
(Tunneling) across another unsecured medium, like the Internet
• What is great about Cisco and VPN’s is that all Cisco devices can be
configured as a VPN enabled device solely by the IOS feature set itself. There
is a concentrator series, but...
To control outbound access you can use the outbound command.
You can use the PIX to construct access lists that will prevent outgoing traffic from
traveling from a specific port to a specific IP, or to a specific service. The outbound
command will create an access list, and the apply command applies that access list
to an interface.
The PIX allows all outgoing connections unless you explicitly deny them. You should
deny all outbound connections and selectively permit what you want.
To use the outbound command, use the following syntax: ...
A Cisco Secure Wireless Network offers customers an integrated, defense-in-depth approach to WLAN
security, and includes WLAN threat detection and mitigation, as well as policy enforcement.
This guide outlines the role of Cisco Security Agent (CSA) in WLAN threat detection and mitigation,
as well as in policy enforcement, and provides an overview of the security features it offers for a WLAN,
along with implementation guidelines to assist in its design and deployment in production networks.
Your network consists of several network devices. You would like to configure access security to
your devices by user where possible. You have a TACACS+ Cisco Secure Server for centralized
authentication. Configure each device for secure access while also configuring local access as a
fallback in case the ACS server is not available. The following information should be used.
The Cisco Certified Security Professional (CCSP) certification is the newest midlevel certification
from Cisco Systems. This certification is on a par with CCNP and CCDP. The aim of this
certification is to provide professional-level recognition to network engineers in the design and
implementation of Cisco secure networks. This certification provides validation of knowledge and
skills in key areas of security, including firewalls, intrusion detection, VPNs, identity, and security