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A traditional router is better suited than a firewall device for which function? ()
A. VPN establishment
B. packet-based forwarding
C. stateful packet processing
D. network address translation
参考答案
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[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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