... Router2(config) #access- list deny host 42.35.2.18 Router2(config) #access- list permit any o Cách 2: Router2(config) #access- list deny 42.35.2.18 0.0.0.0 Router2(config) #access- list permit any o ... định access- list chạy giao tiếp, hiển thị cấu hình hoạt động: Router2#show running-config Xem access- list đặt vào giao tiếp nào: Router2#show ip interface Xem access- list tạo router: Router2#show ... interface Xem access- list tạo router: Router2#show access- list e Tạo Access- List mở rộng ( Extended Access List) - Chỉ cho phép telnet từ mạng nối đến serial 1/0 Router1 vào Router1 - Cho phép thứ...
... hình hoạt động • Xem access- list đặt vào giao tiếp • Xem access- list tạo router: e Tạo Access- List mở rộng ( Extended Access List) - Chỉ cho phép telnet từ mạng nối đến serial 2/0 Router1 vào ... 10: đặt access- list vừa tạo vào giao tiếp FastEthernet 0/0 Chú ý phân biệt hai tuỳ chọn “In” “Out” Trong trường hợp câu lệnh cần thực “IP access- group in” d Kiểm định lại Standard Access List • ... thực c Tạo danh s ch truy nhập • Bước 9: tạo danh s ch truy nhập chuẩn (Standard ACL) chặn Router4 ping đến Router2 Tạo access- list chặn địa IP 42.35.2.18 kèm theo lệnh access- list permit any •...
... 2003, Cisco Systems, Inc Case Study: AccessControl Lists (ACLs) 1-5 A sample table layout for recording the VLSM design is below Number of host addresses required Network Address Subnet Mask Max ... has a discussion about these issues, records the major points of the discussion, documents these and makes recommendations Explain your reasons for choosing router ID or interface priority to ... 2003, Cisco Systems, Inc Case Study: AccessControl Lists (ACLs) 1-9 Phase 2: Routing protocols The company wants a recommendation for a routing protocol for the network Worksheet The possible...
... tạp Cú pháp sau: access- list access- list-no {permit|deny} protocol source source-mask destination destination-mask [operator operand] [established] o access- list-no: S nhận dạng danh s ch, có giá ... tả sau: access- list access- list- number {permit|deny} {test conditions} o access- list: từ khóa bắt buộc o access- list-number: Lệnh tổng thể dùng để nhận dạng danh s ch truy cập, thông thường s ... diện Cú pháp sau: {protocol} access- group access- list-number Với: Protocol: giao thức áp dụng danh s ch truy cập Access- group: từ khóa Access- list-number: S hiệu nhận dạng danh s ch truy cập...
... Router(config) #access- list access- list-number {deny | permit} source [source-wildcard ] ……………… Router(config-if)#{protocol} access- group access- list-number {in | out} Hủy ACL: Router(config)#no access- list access- list-number ... ip access- group 100 IN 192.168.0.18 should be denied website of 192.168.0.34 On Router R3 Config# Access- list 100 deny tcp 192.168 0.18 0.0.0.0 192.168.0.34 0.0.0.0 eq 80 Config# access- list ... (any) 397 Danh s ch kiểm tra truy cập (ACL) Wildcard mask 398 Danh s ch kiểm tra truy cập (ACL) Từ khóa Any Host Access- list permit 0.0.0.0 255.255.255.255 hay permit any Access- list permit 200.0.0.9...
... filters to limit accessto only a few IP addresses Hijacked sessions Use encrypted protocols such as SSH and use out-of-band management (Note: SSHv1 makes hijacked sessions harder, but still possible.) ... console port to perform password recovery remotely over the modem AUX and VTY passwords Setting passwords on AUX and VTY ports is similar to setting the console password Setting the password ... Cisco supports only SSH Version SSHv1 is still susceptible to session hijacking, though less so than clear text protocols such as Telnet To enable SSH you need to: • Configure a hostname for...
... password for your Northwind database; you might need to get the password from your database administrator) Drill down to the Customers table in the Northwind database and drag it to your form ... need to create a DataSet object You use a DataSet object to a store local copy of the information stored in the database A DataSet object can represent database structures such as tables, rows, ... objects Click your sqlConnection1 object to display the properties for this object in the Properties window To enable sqlConnection1 toaccess the database, you need to set the password for the...
... additional security by requiring an attacker to both guess the user s password and steal the smart card or token that is used toaccess the system Cisco routers don’t support token-based accesscontrol ... privileged-mode password, for authentication • In larger organizations that need dual-factor access control, configure the router s TACACS+ or RADIUS servers to use token-based accesscontrol AAA Security ... default to the enable password, but denies the users access TACACS+ Enable Password You can also use TACACS+ for the enable password If TACACS+ is already configured on your router, this can be...
... the top of the list It is not possible to reorder an access list, skip statements, edit statements, or delete statements from a numbered access list With numbered access lists, any attempt to ... AccessControl List Basics AccessControl Lists (ACLs) are simple but powerful tools When the access list is configured, each statement in the list is processed by the router in the order ... extended access lists: Two-step process First, the access list is created with one or more access- list commands while in global configuration mode Second, the access list is applied toor referenced...
... the top of the list It is not possible to reorder an access list, skip statements, edit statements, or delete statements from a numbered access list With numbered access lists, any attempt to ... AccessControl List Basics AccessControl Lists (ACLs) are simple but powerful tools When the access list is configured, each statement in the list is processed by the router in the order ... extended access lists: Two-step process First, the access list is created with one or more access- list commands while in global configuration mode Second, the access list is applied toor referenced...
... Internet accessto visitors (guest access) The stringent requirement in this case is to allow visitors external Internet access, while simultaneously preventing any possibility of unauthorized ... MAC addresses are allowed accessto the network, using a central RADIUS server (or identity store) to store the list of MAC addresses This takes the burden of managing the MAC addresses off of ... as the accesscontrol method to provide holistic control over client accessto the network 802.1X always assumes a supplicant at the edge 802.1X can give customers ubiquitous, port-based access...
... Hierarchies Static Separation of Duty SSD Role Hierarchy (UA) User Assignment (PA) Permission Assignment ROLES USERS session_roles user_sessions OPERA TIONS OBJECTS privileges SESSIONS SoD policies deter ... group-based accesscontrol Hierarchical RBAC Role Hierarchy (PA) (UA) User Assignment USERS Permission Assignment ROLES OPERA TIONS OBJECTS privileges user_sessions Sessions session_roles • Role/role ... Permission Assignment ROLES OPERA TIONS OBJECTS privileges user_sessions Sessions session_roles • Many -to- many relationship among individual users and privileges • Session is a mapping between a user...
... Predefined Role Group s dụng Exchange Server 2010 Role Based Access Control: - Delegated Setup: dành cho người quản trị cần triển khai mô hình server Exchange 2010 cung cấp role group Organization Management ... bạn mở Exchange Management Console, phần cửa s bên trái chọn Toolbox, kéo xuống phía nhấn Role Based AccessControl (RBAC) hình dưới: Bạn chuyển tới phần Exchange Control Panel tiếp theo, hệ thống ... dùng đăng nhập Sau đó, mở Administrator Roles: Bên Role Groups, bạn thấy đầy đủ 11 Predefined Role Groups đề cập phía Và lần lựa chọn role bất kỳ, hệ thống hiển thị thông tin Description role...
... Phương vứi pháp s hạ tầng cách mạng bạn ly Ngay từ có mạng chia s , phương pháp cách ly thủ công thi hành việc s dụng danh s ch điều khiển truy cập router switch Các tham ss ch gồm có địa ... tra s dụng cho từ chối to n truy cập cho phép truy cập to n Khi s dụng kiểm tra hợp lệ người dùng, có nhiều mức truy cập khác người dùng khác Đối với quản trị viên ưu tiên mức truy cập to n ... truy cập to n người dùng khác bị giới hạn s ứng dụng Trạng thái máy trạng thái máy tính có liên quan đến s ch bảo mật thiết lập Nếu s ch nằm máy tính Windows nâng cấp vá lỗi cho hệ điều hành kết...
... resource or asset access by trusted users and devices can lead to loss of revenue, fines, lawsuits, ransom demands, and even prison for perpetrators or company officials, not to mention loss ... networks We also briefly discuss ways for companies to ease into a NAC solution, as well as why some companies may choose not tocontrolaccessto their network and the possible ramifications of ... device, accessto a network 1.3.1 Do your NAC homework Regardless of the issue or issues that your organization prioritizes — what parts of the network your organization wants tocontrolaccess to, ...
... appropriate software stored on the remediation servers Some NAC solutions allow quarantined elements to directly access some organizational resources for additional services For example, accessto DNS services ... Client-based software, Cisco Trust Agent (CTA) A Cisco Network Access Device (NAD) with NAC enabled on one or more interfaces for network access enforcement Cisco secureAccessControl Server (ACS) for ... protection is to continuously monitor allowed users, elements and their sessions for suspicious activity, such as worms, viruses, malware, abnormality and so If a suspicious activity is detected, the action...
... Exchange Server 2010 Role Based Access Control: - Delegated Setup: dành cho người quản trị cần triển khai mô hình server Exchange 2010 cung cấp role group Organization Management - Discovery Management: ... Records Management: thường áp dụng để cấu hình, thiết lập tính phân loại policy, thông báo quy luật lưu chuyển liệu - Server Management: dành cho người quản trị muốn thiết lập chế độ transport server ... có to n quyền truy cập tới tất hệ thống Exchange 2010 - Public Folder Management: dùng để quản lý thư mục public s liệu server s dụng Exchange 2010 - Recipient Management: quản lý, giám s t...
... users attempting to gain accessto a network that uses NAC/NAP So, enterprises need to protect themselves against systems that are missing these patches, and the first step is to actually look for ... are specifically designed to communicate their state to NAC/NAP solutions Monitoring processes Monitoring services Monitoring registry settings Monitoring for the presence of (or properties of) specific ... Technologies Cisco defines NAC as follows: Cisco Network Admission Control (NAC) is a solution that uses the network infrastructure to enforce security policies on all devices seeking toaccess network...