Access Control List (ACL) is a List of router interface commands used to Control inbound and outbound data packets. ACL applies to all routing protocols, such as IP, IPX, and AppleTalk.
The ACL is also defined based on each protocol. If the router interface is configured to support three Protocol IP addresses, AppleTalk, and IPX, you must define three ACLs to control the data packets of these three protocols.
The role of ACL
ACL can limit network tra
The access control list (ACL) is the command list of the router interface, used to control incoming and outgoing packets on the port. ACL applies to all routing protocols, such as IP, IPX, and appletalk.
The ACL is also defined based on each protocol. If the router interface is configured to support three Protocols (IP, appletalk, and IPX), you must define three ACLs to control the data packets of these three protocols.
The role of ACL
ACL can limi
the permission to use this luns.Here we need the WWN to access the luns machine, not the local
/qla2xxx/21:01:00:1b:32:31:43:XX/acls create 21:00:00:1b:32:11:64:XX/qla2xxx/21:01:00:1b:32:31:43:XX/acls create 21:01:00:1b:32:31:64:XXCheck and save Configuration
In the top-level directory of targetcli, execute ls to view all the configurations.
/> lso- / .......................................................
1. ACL definitionAn ACL (access control list) is a list of instructions that are applied to the router interface. These instructions tell the router which packets to receive, which packets are rejected, received, or rejected according to certain rules, such as source address, destination address, port number, and so on. ACLs enable users to manage the flow of data and detect specific packets. For the IP protocol, on each port of the router, you can cr
to discuss search "IPSEC" and there will be n more information about IPSec applications ..) (the game blade is on the edge of the Technical Ghost God to create a server security myth! Pioneer in the Internet revolution! Server Security discussion area [s.s. d. A] http://www.31896.net) ⑤ Delete, move, rename, or use the access control table column access control lists (ACLs) to control key system files, commands, and folders: The hacker often comes t
scala> val file = Sc.textfile ("Hdfs://9.125.73.217:9000/user/hadoop/logs") Scala> val count = file.flatmap (line = Line.split ("")). Map (Word = = (word,1)). Reducebykey (_+_) Scala> Count.collect () Take the classic wordcount of Spark as an example to verify that spark reads and writes to the HDFs file system 1. Start the Spark shell
/root/spark-1.4.0-bin-hadoop2.4/bin/spark-shell Log4j:warn No Appenders could is found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsF
correctly:
Slave_io_running:yesSlave_sql_running:yes
Backup and restore using the database file (Raw Data)
Backing Up Database files
Service MARIADB StopTar--selinux--acls--xattrs-czpf/root/dbbackup.tar.gz/var/lib/mysql/Service MARIADB Start
Note: The red parameter lets tar back up both the SELinux property and other ACL properties to prevent it from being restored to the target server.Restore Database files
Service MARIADB StopTar--selinux--
:
Slave_io_running:yesSlave_sql_running:yesBackup and restore using the database file (Raw Data)
Backing Up Database filesService MARIADB StopTar--selinux--acls--xattrs-czpf/root/dbbackup.tar.gz/var/lib/mysql/Service MARIADB StartNote: The red parameter lets tar back up both the SELinux property and other ACL properties to prevent it from being restored to the target server.
Restore Database filesService MARIADB StopTar--selinux--
Build the intrusion detection system under Linux--lids System Management Command--vlockHttp://blog.chinaunix.net/uid-306663-id-2440200.htmlComposition of the LidsTwo user-state tools and some files, and a kernel patch/sbin/directory holds LIDSADM commands and lidsconf commands/etc/lids/lids.conf #ACLS配置文件/etc/lids/lids.cap #LIDS capabilities (feature) profile/ETC/LIDS/LIDS.PW #LIDS密码文件/etc/lids/lids.net # Lids Message Warning profileFirst, what is lid
Because spark-1.3 as a milestone release, add a lot of features, so, it is necessary to study a, spark-1.3 need to scala-2.10.x version support, and the system on the default Scala version of 2.9, need to upgrade, You can refer to Ubuntu to install the 2.10.x version of Scala. After configuring the Scala environment, download the CDH version of Spark and click I download. Once downloaded, unzip directly and then run directly in the bin directory./spark-shell: The logs are as follows: [Email pr
users can create objects in the system or Sysaux table space. You do not need to have a quota for the allocated temporary table space or any restore table space. • When a user creates or extends a segment, the Oracle instance checks the limit. • For activities that are assigned to a user scenario, only those activities that use space in the tablespace are accounting for the limit. Activities that do not use space in the allocated table space, such as creating a view or using temporary table spa
Transferred from: http://linuxguest.blog.51cto.com/195664/1241071. Why ACLs are usedLet's start by simply reviewing the Linux file permission.Under Linux, objects that can operate on a file (or resource) are divided into three categories: File owner (the owner of the document), group (which is not necessarily the group where the file owner resides), and other (others)Read, write and Execute/search permission are defined separately for each category (S
China's router technology development is very rapid, at the same time the market demand is also very high, maybe a lot of people do not understand the technology of the proliferation of routers, there is no relationship, read this article you certainly have a lot of harvest, I hope this article can teach you more things. One of the important ways of GFW is the blocking of IP at the network layer. In fact, GFW uses a much more efficient way of controlling access than the traditional access contro
Environment: hadoop2.7.4 spark2.1.0
After Spark-historyserver and Yarn-timelineserver are configured, there is no error when starting, but in spark./spark-submit–class Org.apache.spark.examples.SparkPi–master yarn–num-executors 3–driver-memory 1g–executor-cores 1/opt/spark-2.1.0-bin-hadoop2.7/examples/jars/spark-examples_2.11-2.1.0.jar 20When the command submitted application, the following error was reported
[Root@node-2 bin]#./spark-submit--class org.apache.spark.examples.SparkPi--master Yarn-
Jene flutter graph (all subnet masks are 255.255.255.0):
PC (10.1.1.2)---E0 (10.1.1.1) [Routera]s0 (192.1.1.1)---S1 (192.1.1.2) [Routerb]
Do a one-way access to the network in fact, the basic function of the firewall: I am intranet, you are extranet, I can access you, but you can not visit me.
So now assume that the Routera of the E0 network segment for the intranet segment, Routera S0 network field, but also assume that I want to do is the intranet PC function ping outside the routerb S1 mou
Tags: style blog http OS using strong AR data 2014The most basic form of an ACL is: for a specific protocol type and port combination, permit or deny traffic from and/or to a host. Stateful firewalls filter on one-way data flow (flow) or stream, and a stateful firewall compares inbound traffic with defined policies, creates a connection record if traffic is allowed, and automatically releases subsequent packets that belong to the connection without having to compare again. Due to the high effi
Https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/security/configuration/guide/b_ Cisco_nexus_9000_series_nx-os_security_configuration_guide_7x/b_cisco_nexus_9000_series_nx-os_security_ Configuration_guide_7x_chapter_01.html
Feature
Description
Changed in Release
Where documented
IP ACLs
Added IPV6 Wildcard mask support for access lists and object groups for Cisco Nexus 9200, 9300-e
ACL Advanced Applications 1 , using ACLs to detect SYN flood attacks Each SYN message received by the server needs to establish a connection and allocate core memory for the link information, put this link into a half connection, and then respond to the syn+ack message to the source address. If the source address of the SYN message is forged, the source cannot receive the Syn+ack message sent by the server, and the ACK acknowledgement message will not
ACL permission control
Set ACL permissions: Setfacl
To view ACL permissions: Getfacl
The main purpose of ACL privilege control is to provide specific permission settings beyond the traditional Owner,group,other Read,wirte,execute permissions, and to set specific permissions for a single user or group
For example, a directory permission is
drwx------2 root root 4096 03-10 13:51./acldir
Users user user does not have any permissions on this directory so they cannot access this directory, and
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