Which configuration keyword ensures that all in-progress sessions are re-evaluated upon committing a security policy change?() A. policy-rematchB. policy-evaluateC. rematch-policyD. evaluate-policy
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
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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)
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