Which two parameters are configured in IPsec policy? ()(Choose two.)A. modeB. IKE gatewayC. security proposalD. Perfect Forward Secrecy

题目
Which two parameters are configured in IPsec policy? ()(Choose two.)

A. mode

B. IKE gateway

C. security proposal

D. Perfect Forward Secrecy

相似考题

1.文中（ 3 ）处正确的答案是（ ）。A．connectB．controlC．configureD．confirm

2.Intheconfigurationshownintheexhibit，youdecidedtoeliminatethejunos-ftpapplicationfromthematchconditionofthepolicyMyTraffic.[editsecuritypolicies]user@hostlshowfrom-zonePrivateto-zoneExternal{policyMyTraffic{match{source-addressmyHosts；destination-addressExtServers；application[junos-ftpjunos-bgp]；}then{permit{tunnel{ipsec-vpnvpnTunnel；}}}}}policy-rematch；WhatwillhappentotheexistingFTPandBGPsessions？（）A.TheexistingFTPandBGPsessionswillcontinue.B.TheexistingFTPandBGPsessionswillbere-evaluatedandonlyFTPsessionswillbedropped.C.TheexistingFTPandBGPsessionswillbere-evaluatedandallsessionswillbedropped.D.TheexistingFTPsessionswillcontinueandonlytheexistingBGPsessionswillbedropped.

3.Intheexhibit，youdecidedtochangemyHostsaddresses.[editsecuritypolicies]user@hostshowfrom-zonePrivateto-zoneExternal{policyMyTraffic{match{source-addressmyHosts；destination-addressExtServers；application[junos-ftpjunos-bgp]；}then{permit{tunnel{ipsec-vpnvpnTunnel；}}}}}policy-rematch；Whatwillhappentothenewsessionsmatchingthepolicyandin-progresssessionsthathadalreadymatchedthepolicy？（）A.Newsessionswillbeevaluated.In-progresssessionswillbere-evaluated.B.Newsessionswillbeevaluated.Allin-progresssessionswillcontinue.C.Newsessionswillbeevaluated.Allin-progresssessionswillbedropped.D.Newsessionswillhaltuntilallin-progresssessionsarere-evaluated.In-progresssessionswillbere-evaluatedandpossiblydropped.

4.以下程序段的输出结果为 ( )int j=2；switch(j){case 2：System.out.print("two.")；case 2+1：System.out.println("three.")；breakdefault：System.out.println("value is"+j)；break；}A．two.three.B．two.C．three.D．value is 2

参考答案和解析
参考答案：C, D
更多“Which two parameters are configured in IPsec policy? ()(Choose two.) ”相关问题

  • 第1题：

    Which statement contains the correct parameters for a route－based IPsec VPN?()

    A. [edit security ipsec] user@host# show proposal ike1-proposal { protocol esp; authentication-algorithm hmac-md5-96; encryption-algorithm 3des-cbc; lifetime-seconds 3200; }policy ipsec1-policy { perfect-forward-secrecy { keys group2; } proposals ike1-proposal; } vpn VpnTunnel { interface ge-0/0/1.0; ike { gateway ike1-gateway; ipsec-policy ipsec1-policy; } establish-tunnels immediately; }

    B. [edit security ipsec] user@host# show proposal ike1-proposal { protocol esp; authentication-algorithm hmac-md5-96; encryption-algorithm 3des-cbc; lifetime-seconds 3200; } policy ipsec1-policy { perfect-forward-secrecy { keys group2; } proposals ike1-proposal; } vpn VpnTunnel { interface st0.0; ike { gateway ike1-gateway; ipsec-policy ipsec1-policy; } establish-tunnels immediately; }

    C. [edit security ipsec] user@host# show proposal ike1-proposal { protocol esp; authentication-algorithm hmac-md5-96; encryption-algorithm 3des-cbc; lifetime-seconds 3200;} policy ipsec1-policy { perfect-forward-secrecy { keys group2; } proposals ike1-proposal; } vpn VpnTunnel { bind-interface ge-0/0/1.0; ike { gateway ike1-gateway; ipsec-policy ipsec1-policy; } establish-tunnels immediately; }

    D. [edit security ipsec] user@host# show proposal ike1-proposal { protocol esp; authentication-algorithm hmac-md5-96; encryption-algorithm 3des-cbc; lifetime-seconds 3200; }policy ipsec1-policy { perfect-forward-secrecy { keys group2; } proposals ike1-proposal; } vpn VpnTunnel { bind-interface st0.0; ike { gateway ike1-gateway; ipsec-policy ipsec1-policy; } establish-tunnels immediately; }


    参考答案：D

  • 第2题：

    ABGProuterhasthefollowingconfiguration：

    protocols{

    bgp{

    export[policy-1policy-2policy-3]；

    }}

    policy-options{

    policy-statementpolicy-2{

    termget-statics{

    fromprotocolstatic；

    thenaccept；

    }

    termreject-all{

    thenreject；

    }

    }

    policy-statementpolicy-1{

    termget-aggregate{

    fromprotocolaggregate；

    thenaccept；

    }

    termreject-all{

    thenreject；

    }

    }

    policy-statementpolicy-3{

    termget-ospf{

    fromprotocolospf；

    thenaccept；

    }

    termreject-all{

    thenreject；

    }

    }

    }

    Whichpolicytermisevaluatedfirstwhenexportingroutes？（）


    参考答案：D

  • 第3题：

    WhichofthefollowingareassociatedwiththeapplicationlayeroftheOSImodel?(two.)()

    A.ping

    B.Telnet

    C.FTP

    D.TCP

    E.IP


    参考答案：B, C

  • 第4题：

    Which configuration keyword ensures that all in－progress sessions are re－evaluated upon committing a security policy change?()

    A. policy-rematch

    B. policy-evaluate

    C. rematch-policy

    D. evaluate-policy


    参考答案：A

  • 第5题：

    以下程序段的输出结果为( )。 int j=2 switch (j){ Case 2： system.out.print("two.")： Case 2+1： System.out.println("three.")； break： default: System.out.println (“value is”+j): Break }A.B.two

    A．two.three.

    B．two

    C．three

    D．value is 2


    正确答案：A

  • 第6题：

    某全国连锁企业的总部和分布在全国各地的30家分公司之间经常需要传输各种内部数据，因此公司决定在总部和各分公司之间建立VPN技术。具体拓扑如下：配置部分只显示了与总部与分公司1的配置。根据拓扑完成问题1-问题3。



    [问题1]（3分）：在总部与分公司之间相连的VPN方式是（1），在IPsec工作模式中有传输模式和隧道模式，其中将源IP数据包整体封装后再进行传输的模式是（2）.1备选答案：A.站点到站点 B.端到端C.端到站点[问题2]（13分）：请将相关配置补充完整。总部防火墙firewall1的部分配置如下。 （3）[FIREWALL1] interface（4）[FIREWALL1-GigabitEthernet1/0/2] ip address （5）[FIREWALL1-GigabitEthernet1/0/2] quit[FIREWALL1] interface GigabitEthernet 1/0/1[FIREWALL1-GigabitEthernet1/0/1] ip address 202.1.3.1 24[FIREWALL1-GigabitEthernet1/0/1] quit# 配置接口加入相应的安全区域。[FIREWALL1] firewall zone trust [FIREWALL1-zone-trust] add interface （6）[FIREWALL1-zone-trust] quit[FIREWALL1]（7）[FIREWALL1-zone-untrust] add interface GigabitEthernet 1/0/1[FIREWALL1-zone-untrust] quit2. 配置安全策略，允许私网指定网段进行报文交互。# 配置Trust域与Untrust域的安全策略，允许封装前和解封后的报文能通过[FIREWALL1]（8）[FIREWALL1-policy-security] rule name 1[FIREWALL1-policy-security-rule-1] source-zone （9）[FIREWALL1-policy-security-rule-1] destination-zone untrust[FIREWALL1-policy-security-rule-1] source-address （10）[FIREWALL1-policy-security-rule-1] destination-address 192.168.200.0 24[FIREWALL1-policy-security-rule-1] action （11）[FIREWALL1-policy-security-rule-1] quit…..# 配置Local域与Untrust域的安全策略，允许IKE协商报文能正常通过FIREWALL1。[FIREWALL1-policy-security] rule name 3[FIREWALL1-policy-security-rule-3] source-zone local[FIREWALL1-policy-security-rule-3] destination-zone untrust[FIREWALL1-policy-security-rule-3] source-address 202.1.3.1 32[FIREWALL1-policy-security-rule-3] destination-address 202.1.5.1 32[FIREWALL1-policy-security-rule-3] action permit[FIREWALL1-policy-security-rule-3] quit…3. 配置IPSec隧道。# 配置访问控制列表，定义需要保护的数据流。[FIREWALL1] (12)[FIREWALL1-acl-adv-3000] rule permit (13)[FIREWALL1-acl-adv-3000] quit# 配置名称为tran1的IPSec安全提议。[FIREWALL1] ipsec proposal tran1[FIREWALL1-ipsec-proposal-tran1] encapsulation-mode (14)[FIREWALL1-ipsec-proposal-tran1] transform esp[FIREWALL1-ipsec-proposal-tran1] esp authentication-algorithm sha2-256[FIREWALL1-ipsec-proposal-tran1] esp encryption-algorithm aes[FIREWALL1-ipsec-proposal-tran1] quit# 配置序号为10的IKE安全提议。[FIREWALL1] (15)[FIREWALL1-ike-proposal-10] authentication-method pre-share[FIREWALL1-ike-proposal-10] authentication-algorithm sha2-256[FIREWALL1-ike-proposal-10] quit# 配置IKE用户信息表。[FIREWALL1] ike user-table 1[FIREWALL1-ike-user-table-1] user id-type ip 202.1.5.1 pre-shared-key Admin@gkys[FIREWALL1-ike-user-table-1] quit# 配置IKE Peer。[FIREWALL1] ike peer b[FIREWALL1-ike-peer-b] ike-proposal 10[FIREWALL1-ike-peer-b] user-table 1[FIREWALL1-ike-peer-b] quit# 配置名称为map_temp序号为1的IPSec安全策略模板。[FIREWALL1] ipsec policy-template map_temp 1[FIREWALL1-ipsec-policy-template-map_temp-1] security acl 3000[FIREWALL1-ipsec-policy-template-map_temp-1] proposal tran1[FIREWALL1-ipsec-policy-template-map_temp-1] ike-peer b[FIREWALL1-ipsec-policy-template-map_temp-1] reverse-route enable[FIREWALL1-ipsec-policy-template-map_temp-1] quit# 在IPSec安全策略map1中引用安全策略模板map_temp。[FIREWALL1] ipsec policy map1 10 isakmp template map_temp# 在接口GigabitEthernet 1/0/1上应用安全策略map1。[FIREWALL1] interface GigabitEthernet 1/0/1[FIREWALL1-GigabitEthernet1/0/1] ipsec policy map1[FIREWALL1-GigabitEthernet1/0/1] quit [问题3]IPsec中，通过一些协议的处理，可以有效的保护分组安全传输。其中能够确保数据完整性，但是不能确保数据机密性的是（17），而技能报数数据传输的机密性又能保证数据完整性的是（18）


    答案：
    解析：
    [问题1]A，隧道模式[问题2]（3）system-view （4）GigabitEthernet 1/0/2（5） 192.168.1.1 24或者192.168.1.1 255.255.255.0 （6） GigabitEthernet 1/0/2(7) firewall zone untrust (8) security-policy(9) trust (10) 192.168.100.0 24(11) permit (12) acl 3000(13) ip source 192.168.100.0 0.0.0.255 destination 192.168.200.0 0.0.0.255 （14）tunnel （15）ike proposal 10 [问题3]（17）AH （18）ESP
    【解析】
    [问题1]IPSec VPN应用场景分为站点到站点、端到端、端到站点三种模式。1）站点到站点（Site-to-Site）。站点到站点又称为网关到网关，多个异地机构利用运营商网络建立IPSec隧道，将各自的内部网络联系起来。2）端到端（End-to-End）。端到端又称为PC到PC，即两个PC之间的通信由IPSec完成。3）端到站点（End-to-Site）。端到站点，两个PC之间的通信由网关和异地PC之间的IPSec会话完成。

    {图}

    [问题2] system-view[FIREWALL1] interface GigabitEthernet 1/0/2[FIREWALL1-GigabitEthernet1/0/2] ip address 192.168.1.1 24 [FIREWALL1-GigabitEthernet1/0/2] quit[FIREWALL1] interface GigabitEthernet 1/0/1[FIREWALL1-GigabitEthernet1/0/1] ip address 202.1.3.1 24[FIREWALL1-GigabitEthernet1/0/1] quit# 配置接口加入相应的安全区域。[FIREWALL1] firewall zone trust [FIREWALL1-zone-trust] add interface GigabitEthernet 1/0/2[FIREWALL1-zone-trust] quit[FIREWALL1] firewall zone untrust [FIREWALL1-zone-untrust] add interface GigabitEthernet 1/0/1[FIREWALL1-zone-untrust] quit2. 配置安全策略，允许私网指定网段进行报文交互。# 配置Trust域与Untrust域的安全策略，允许封装前和解封后的报文能通过[FIREWALL1] security-policy [FIREWALL1-policy-security] rule name 1[FIREWALL1-policy-security-rule-1] source-zone trust [FIREWALL1-policy-security-rule-1] destination-zone untrust[FIREWALL1-policy-security-rule-1] source-address 192.168.100.0 24 [FIREWALL1-policy-security-rule-1] destination-address 192.168.200.0 24[FIREWALL1-policy-security-rule-1] action permit [FIREWALL1-policy-security-rule-1] quit…..# 配置Local域与Untrust域的安全策略，允许IKE协商报文能正常通过FIREWALL1。[FIREWALL1-policy-security] rule name 3[FIREWALL1-policy-security-rule-3] source-zone local[FIREWALL1-policy-security-rule-3] destination-zone untrust[FIREWALL1-policy-security-rule-3] source-address 202.1.3.1 32[FIREWALL1-policy-security-rule-3] destination-address 202.1.5.1 32[FIREWALL1-policy-security-rule-3] action permit[FIREWALL1-policy-security-rule-3] quit…3. 配置IPSec隧道。# 配置访问控制列表，定义需要保护的数据流。[FIREWALL1] acl 3000[FIREWALL1-acl-adv-3000] rule permit ip source 192.168.100.0 0.0.0.255 destination 192.168.200.0 0.0.0.255 [FIREWALL1-acl-adv-3000] quit# 配置名称为tran1的IPSec安全提议。[FIREWALL1] ipsec proposal tran1[FIREWALL1-ipsec-proposal-tran1] encapsulation-mode tunnel [FIREWALL1-ipsec-proposal-tran1] transform esp[FIREWALL1-ipsec-proposal-tran1] esp authentication-algorithm sha2-256[FIREWALL1-ipsec-proposal-tran1] esp encryption-algorithm aes[FIREWALL1-ipsec-proposal-tran1] quit# 配置序号为10的IKE安全提议。[FIREWALL1] ike proposal 10 [FIREWALL1-ike-proposal-10] authentication-method pre-share[FIREWALL1-ike-proposal-10] authentication-algorithm sha2-256[FIREWALL1-ike-proposal-10] quit# 配置IKE用户信息表。[FIREWALL1] ike user-table 1[FIREWALL1-ike-user-table-1] user id-type ip 202.1.5.1 pre-shared-key Admin@gkys[FIREWALL1-ike-user-table-1] quit# 配置IKE Peer。[FIREWALL1] ike peer b[FIREWALL1-ike-peer-b] ike-proposal 10[FIREWALL1-ike-peer-b] user-table 1[FIREWALL1-ike-peer-b] quit# 配置名称为map_temp序号为1的IPSec安全策略模板。[FIREWALL1] ipsec policy-template map_temp 1[FIREWALL1-ipsec-policy-template-map_temp-1] security acl 3000[FIREWALL1-ipsec-policy-template-map_temp-1] proposal tran1[FIREWALL1-ipsec-policy-template-map_temp-1] ike-peer b[FIREWALL1-ipsec-policy-template-map_temp-1] reverse-route enable[FIREWALL1-ipsec-policy-template-map_temp-1] quit# 在IPSec安全策略map1中引用安全策略模板map_temp。[FIREWALL1] ipsec policy map1 10 isakmp template map_temp# 在接口GigabitEthernet 1/0/1上应用安全策略map1。[FIREWALL1] interface GigabitEthernet 1/0/1[FIREWALL1-GigabitEthernet1/0/1] ipsec policy map1[FIREWALL1-GigabitEthernet1/0/1] quit[问题3]（1）AH。认证头（Authentication Header，AH）是IPSec体系结构中的一种主要协议，它为IP数据报提供完整性检查与数据源认证，并防止重放攻击。AH不支持数据加密。AH常用摘要算法（单向Hash函数）MD5和SHA1实现摘要和认证，确保数据完整。（2）ESP。封装安全载荷（Encapsulating Security Payload，ESP）可以同时提供数据完整性确认和数据加密等服务。ESP通常使用DES、3DES、AES等加密算法实现数据加密，使用MD5或SHA-1来实现摘要和认证，确保数据完整。

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