Many people begin to understand that for WIN2K, after the TCP139 and 445 ports are disabled, the security will be improved a lot, at least a lot
System information cannot be scanned.
In general, this is indeed the case. However, to achieve truly perfect security, you still need to consider whether there will be any hidden risks from every detail.
For example, for a fully installed WIN2K or a system that has started the Simple Network Management Protocol (SNMP ),
This is a critical risk that expo
multiple ip addresses to the same physical Nic in Linux.IpAlias is created and maintained by the ifconfig program, while secondary ip address is created and maintained by the ip program. Ip addr addThe created scondary ip address cannot be seen in ifconfig-a. In turn, the ethX: Y created by ifconfig can be viewed in the ip addrShow.Ip alias is familiar to everyone, so let's talk about secondary ipHow to Create address[Root @ mlsx autostart] # ifconfigEth1 LinkEncap: Ethernet HWaddr 00: 13: 77:
performance when SCALING
Interestingly, if we were to extend the Accountservice instance from one to 4, how would it affect latency and cpu/memory usage. Is there a substantial overhead when the load balancer in swarm mode polls us for requests?
docker service scale accountservice=4
Wait a few seconds to get everything ready.
CPU and memory usage during load testing
Use 1000 requests per second to run the Gatling test.
CONTAINER CPU % MEM USAGE /
configurations.
Basic functionsEntering ifconfig on the command line interface without specifying any options will provide you with a fairly complete description of the current status of all active network interfaces. For example, if you enter ifconfig in the command line on a machine with the host name erebus, the following output may be returned:
Eth0 Link encap: Ethernet HWaddr 00: C0: F0: 77: FD: ADInet addr: 192.168.2.103 Bcast: 192.168.2.255 Mask: 255.255.255.0Inet6 addr: fe80: 2c0: f0ff:
MySQL database Master/Slave server in Linux system 1. network configuration server A: [root@CentOSmysql-5.0.40] # ifconfigeth0eth0Linkencap: E
MySQL database Master/Slave server in Linux system 1. network configuration server A: [root @ CentOS mysql-5.0.40] # ifconfig eth0 eth0 Link encap: E
MySQL database Master/Slave server in Linux
1. Network ConfigurationServer:[Root @ CentOS mysql-5.0.40] # ifconfig eth0Eth0 Link encap: Ethernet HWaddr 08: 00: 27: 56: AAInet addr: 2.2.2.135 Bcast: 2.20
capabilities:Supports mpls vpn and mpls te, and provides high-quality, secure, and multi-layer mpls vpn solutions, which can be used as cost-effective mpls pe devices.
Business capability:The software system is based on a VRP software platform with proprietary intellectual property rights of Huawei. It supports multiple VPNL2TP, GRE, mpls vpn, and so on) and provides a wide range of NAT functions, provides multiple interconnection functions, including Ethernet/VLAN, PPP/MP, PPPoE, Frame Relay,
The traditional underlying network setting tools on GNU/Linux are ifconfig and route, which are included in the net-tools Package. Currently, these tools are replaced by the ip addresses in the iproute package. The ip address can run on Linux 2.2 or the updated kernel, which has better compatibility than the old tool. However, these traditional setup tools are still usable and more familiar to everyone. The following shows how to change the IP address of the network interface eth0 from 192.168.0
command to make the IP address take effect:
[Bkjia @ bkjia hadoop] $ sudo service network restart Shutting down interfaceEth0: Device state: 3 (disconnected) [OK] Shutting down loopbackInterface: [OK] Bringing up loopback interface: [OK] Bringing upInterface eth0: Active connection state: activated Active connectionPath:/org/freedesktop/NetworkManager/ActiveConnection/7 [OK] [bkjia @ bkjiaHadoop] $Run ifconfig to check whether the settings take effect:[Bkjia @ bkjia hadoop] $ ifconfig eth0 Link
router protocols such as RIP, OSPF, BGP, and IS-IS, as well as multicast routing protocols such as IGMP, PIM, MBGP, and MSDP, as well as routing policies and policies.
IPv6 Routing Capability
Fully supports both IPv4 and IPv6 protocols, implements hardware IPv6 forwarding, and provides a wide range of IPV6 protocols. Supports a variety of IPv4 to IPv6 transition technology: Manual Tunnel Configuration, automatic configuration of tunnel, 6to4 tunnel, NAT-PT, etc.; Support IPv6 Static Routing, su
Snmp Simple Network Management Protocol
The predecessor of the Simple Network Management Protocol (SNMP) is the Simple gateway monitoring Protocol (SGMP), which is used to manage communication lines. Subsequently, SGMP was greatly modified, especially when SMI and MIB compliant with Internet definitions were added: the improved protocol was the famous SNMP.
Simple Network Management protocol (SNMP) is composed of a set of network management standards,
for network management. The Design and Implementation of the embedded RMON agent in the Gigabit Ethernet switch are discussed below.
I. System Interface
The embedded RMON agent designed in this article is a module of network management software for Gigabit Ethernet switches. It needs to work collaboratively with the following modules from the bottom up.
◆ Ethernet underlying driver
The work of the RMON agent is basically to monitor the packets on the network segment. The underlying work of the
statistical information processed by the management software be different from checking common LAN or IP subnet dialogs: rmon mib and RMON-2 MIB provide a framework for determining the LAN and subnet information, respectively, and VLAN configurations must define their own MIB, or how the configuration gets the above information based on other
. For password, you need to replace it with a comunity read string in the Linux SNMP field 。
For some devices, the default public can work, but this setting may be disabled, adjust or be protected for security and confidentiality reasons. Please read the document of your device or program. Next there is a parameter called OID, which is used to represent the object identifier 。
It seems confusing when I first learned the Linux SNMP protocol. It is not that difficult when you see the
.
Step 3: click the "protocol" tab and select "UDP" in "select protocol type ". In the "set IP protocol port" area, select "from this port" and enter 161. Click "to this port", enter 161, and click "OK". In the "IP Filter list" dialog box, select "add. Add port 162 again in the same way.
Linux SNMP protocol
The Simple Network Management Protocol (Linux SNMP) is first proposed by the Internet Engineering Task Organization (IETF) research team to solve the router management problem on the Internet
IP via the link address. To access the files on the FTP.Add a Yum source profile on the SuSE server/ETC/ZYPP/REPOS.D # VI Ftp-suse.repo[Ftp-suse]Name=ftp-suseEnabled=1Autorefresh=0Baseurl=ftp://windows System IPGpgcheck=0Refresh Cache/ETC/ZYPP/REPOS.D # Zypper refRetrieving repository ' ftp-suse ' metadata [done]Building repository ' ftp-suse ' cache [done]All repositories has been refreshed.Iv. VerificationTry to install the package# Zypper Install Ncurses-develLoading Repository Data ...Readi
Requirements: Get the current bandwidth of the switch if the threshold is exceeded, send a short message alarm mainly use the company's SMS interface and Snmpwalk command to achieve a basic Environment 1, version cat/etc/debian_version 7.82, kernel uname-r3.2.0-4-amd643, IP (eth0) 10.1.10.185 Second, the specific script #!/bin/bash#-------------------------------------- ------------#Author: jimmygong#email:[emailprotected] #FileName: shcnc.sh#function: Gets the switch bandwidth exceeds the thr
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