With the rapid development of internet/intranet, the national enterprises and institutions are in the construction of local area network and connected to the Internet, but the information network security is always our concern, so this paper proposed a router under the Access Control List (ACL) to build a network of firewall architecture.
An organization's global security strategy should be based on security analysis and business requirements analysi
devgrp group and change the basic group of develop to this group.
Groupadd devgrp
Chown: devgrp develop
Change the folder permission to-rwxrws-T
Chomod 3770 develop # First 3 indicates that the owner group of the files created by the dual-User is devgrp, so that they can have homogeneous group permissions to modify the files of the other user and cannot delete the files.
2. add an additional group devgrp to the dual-account
Usermod-aG devgrp redhat
Usermod-aG devgrp gentoo
System default perm
5.2 extended ACL
Purpose:
1. master the basic preparation of number extended ACL.
2. Understand the basic features of serial number extended ACL.
Tutorial topology:
650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/06153444D-0.png "title =" 5.2.png "/>
Tutorial steps:
1. Configure the IP addresses of each vro Based on the topology in
differences between in and out of ACLsIn and out are relative, for example: A (S0)-----(S0) B (S1)--------(S1) C www.2cto.com assume that you now want to deny a access C, and assume that you are doing an ACL on B (of course c), we replace this topology with an example : The S0 mouth of B is the front door, S1 mouth is the back door, the whole B is your living room, the front door is connected to a, the back door of the living room is your home vault (
Linux file permissions are divided into ACL-enabled and ACL-enabled permissions
If ACL permissions are not enabled LS-L can see the following, Master: RW, Group: RW, others: R-rw-rw-r–-1 www. 0 June 3 23:46 test
Look again. Enable ACL permissions ls-l, is not a more than a + and s+ indicates that it is controlled by
ORA-24247: Network access is denied by Access control List (ACL)You need to use Dbms_network_acl_admin first. CREATE_ACL Create an Access control List (ACL),Then use the dbms_network_acl_admin. Assign_acl This ACL is associated with the mail server,Finally, use Dbms_network_acl_admin. Add_privilege This ACL grants the
1. ACL (accerss Control Lists) Permission Control
1. You can set read and write permissions for nodes to ensure data security.
2. Permission permissions can specify different permission ranges and Roles
Ii. ACL command line
Getacl: obtains the ACL permission information of a node.
Setacl: sets the ACL permission infor
permit ip any (54 matches) 3. ACL error code: www.2cto.com r2 (config) # ip access-list extended 100r2 (config) # deny ip 192.168.10.10 255.255.255.255.255 192.168.255.10 255.255.255.255 // convert to any to r2 (config-ext-nacl) # exitr2 # show ip access-listsExtended IP access list 10010 deny ip any 4. ACL standard writing deny PC1 192.168.10.10 ----> 192.168.20.10 r1 (config) # access-list 1 deny host 19
The h3c layer-3 Switch acl is an example of a new library that can only access the electronic reading room, and cannot access other hosts on the Intranet, so as to avoid security impact. the IP address of the On-Internet www.2cto.com electronic reading room is not opened to 10.0.1.9, the new library plans to divide vlan 11, network segment 10.1.11.0/25, and vlan-int 11 IP address 10.1.11.1. The layer-3 Switch has already completed the inter-vlan routi
1. ACL Description: the access control list (ACL) is the command list of vro and vswitch interfaces. It is used to control inbound and outbound data packets on the port. ACL applies to all routing protocols, such as IP, IPX, and AppleTalk. 2. view the permission list: [linuxidc @ foundation2Desktop] $ ls-lfile-rw
1. ACL
Zookeeper ORA-24247: Network Access denied access control list (ACL) Note: The command must be used under the System user.You must first use dbms_network_acl_admin.create_acl to create an access control list (ACL ),Use dbms_network_acl_admin.assign_acl to associate the ACL with the email server,Finally, use dbms_network_acl_admin.add_privilege to grant the user t
I. Introduction of ACL usageACLs are the main purpose of access Control List to provide specific permission settings other than the traditional owner,group,others Read,write,execute permissions, which can be r,w for a single user, a single file, or a directory. The privilege control of x is useful for use situations that require special permissions. For example, a file that does not allow a single user to access it.Second, Getfacl, setfacl Two command
Default Anonymous permissionsThe zookeeper provides several authentication modes (scheme) as follows:
Digest:client driven by user name and password authentication, such as User:password,digest's password generation method is the Base64 form of the SHA1 Digest
Auth: Do not use any ID, on behalf of any confirmed users.
ip:client driven by IP address verification, e.g. 172.2.0.0/24
World: Fixed user for anyone, open permissions for all client side
Super: In this scheme cas
(1) effects:
IP Access-list extended to-Internet
Permit IP host 10.63..1 .1 any
Permit IP host 10.63..2 .2 any
Permit IP host 10.128.16.1 any
Permit IP host 10.128.16.2 any
Analysis:
The displayed result indicates that the vro has created an extended ACL named "to-Internet" so that:
Allow all IP traffic from the host 10.63..1 .1 To access the Internet through the router)
Allow all IP traffic from the host 10.63..2 .2 to access the Internet through the
ACL placement rules can be placed in the appropriate location to filter out unnecessary traffic, making the network more efficient. ACL can act as a firewall to filter data packets and remove unnecessary traffic. The location of the ACL determines whether it can effectively reduce unnecessary traffic. For example, the traffic denied by the remote destination shou
Error sample (when sending an HTTP request using Utl_http, the following error is reported):
Reason:
1. Oracle allows access to external network services using several Pl/sql APIs (utl_tcp, UTL_SMTP, Utl_mail, Utl_http, and UTL_INADDR), which use the TCP protocol.
2. Oracle 10g is implemented through a On/off switch based on whether the user is granted permission to execute a package, and Oracle 11g introduces fine-grained access network services.
3, through the use of access control lists (
The user access control mechanism is always discussed in terms of coarse-grained and fine-grained two aspects:
Coarse-grained control: You can provide access to a layer of an entire object or group of objects, while fine-grained control is always controlled at the method or property layer, such as:
Allowing a file to be read-only is coarse-grained control, and allowing write operations on a particular line of the file is fine-grained.
A good user control mechanism, of course, allows fine-grai
ZK to the Znode operation using ACL access control, similar to the read and write permissions provided by Linux, ZK will operate the following categories: Create/read/write/delete/admin,
· Create: Indicates that a permission is created for a child node
· READ: means can getdata or GetChildren
· WRITE: Indicates that you can SetData
· Delete: Indicates that you can DELETE child nodes
· ADMIN: Indicates that Znode permissions can be set by SetACL
The Cr
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.