Ⅰ linux下连不上网络是怎么回事
连不上本地网呢,还是宽带上网?
首先检查网卡是否安装成功,如果在局域网共享上网请正确配好网卡IP地址和DNS地址。如果本机拔号上网,则需要启动linux的PPPOE服务软件。
Ⅱ Linux服务器连接不上的几种解决办法
网络不可到达,有几种可能,1、服务器未开机,2、客户机网关设置有误,3防火墙,iptables -F 刷掉火墙试试
Ⅲ linux服务器访问不到怎么处理
Linux远程服务器连接不上,或连接超时解决办法:
1、测试网络是否通:
ping 远程IP
2、如果能ping通则表示与服务器网络连接是正常,接下来测试端口:
telnet 远程ip 端口
3、如果telnet不上,要考虑服务器是否有防火墙拦截:
CentOS7查看防火墙是否运行:
firewall-cmd --state
Ⅳ linux主机连不上网络
ip add show
没有ip 就配置ip
然后ping网关 ping网络 测试
如果不通 检查你的网络环境
希望可以帮助你 请采纳 谢谢
Ⅳ LINUX 连不起网提示无法连接
、安装rp-pppoe
到 http://www.roaringpenguin.com/pppoe/#download下载最新版rp-pppoe 的源代码。
tar xzvf rp-pppoe-3.5.tar.gz
然后进入解压生成的目录:
cd rp-pppoe-3.5
cd src
接下来就是常规的配置编译和安装,一切按默认的即可:
./configure
make
make install
至此,安装结束,下面是设置过程。
二、设置
1. 配置你的网卡,运行:ifconfig eth0
不要给这个网卡(连接ADSL modem的网卡)设置IP地址,另外也不要设置成启动系统时激活网卡。
2. 运行adsl-setup#adsl-setup
Welcome to the Roaring Penguin ADSL client setup. First, I will run some checks on your system to make sure the PPPoE client is installed properly... Looks good! Now, please enter some information:
USER NAME
>;>;>; Enter your PPPoE user name (default XXX): 在这里输入ADSL的用户名
INTERFACE
>;>;>; Enter the Ethernet interface connected to the ADSL modem
For Solaris, this is likely to be something like /dev/hme0.
For Linux, it will be ethn, where 'n' is a number. (default eth0):如果一张网卡就设置写上eth0
Do you want the link to come up on demand, or stay up continuously? If you want it to come up on demand, enter the idle time in seconds after which the link should be dropped. If you want the link to stay up permanently, enter 'no' (two letters, lower-case.) NOTE: Demand-activated links do not interact well with dynamic IP addresses. You may have some problems with demand-activated links. >;>;>; Enter the demand value (default no):不用写什么
DNS
Please enter the IP address of your ISP's primary DNS server. If your ISP claims that 'the server will provide DNS addresses', enter 'server' (all lower-case) here. If you just press enter, I will assume you know what you are doing and not modify your DNS setup.
>;>;>; Enter the DNS information here:在这里写上主用DNS地址:202.106.0.20
下一个备用DNS地址是202.106.196.115 //这里是北京CNC的DNS服务器地址,你可以根据你所在的区域设置不同的DNS服务器地址。
PASSWORD
>;>;>; Please enter your PPPoE password:输入密码
>;>;>; Please re-enter your PPPoE password:再输入一次
FIREWALLING
Please choose the firewall rules to use. Note that these rules are very basic. You are strongly encouraged to use a more sophisticated firewall setup; however, these will provide basic security. If you are running any servers on your machine, you must choose 'NONE' and set up firewalling yourself. Otherwise, the firewall rules will deny access to all standard servers like Web, e-mail, ftp, etc. If you are using SSH, the rules will block outgoing SSH connections which allocate a privileged source port.
The firewall choices are:
0 - NONE: This script will not set any firewall rules. You are responsible for ensuring the security of your machine. You are STRONGLY recommended to use some kind of firewall rules.
1 - STANDALONE: Appropriate for a basic stand-alone web-surfing workstation
2 - MASQUERADE: Appropriate for a machine acting as an Internet gateway for a LAN
>;>;>; Choose a type of firewall (0-2):这里添写为2
** Summary of what you entered **
Ethernet Interface: eth0
User name: XXX
Activate-on-demand: No
DNS: Do not adjust
Firewalling: MASQUERADE
>;>;>; Accept these settings and adjust configuration files (y/n)?
3. 查看/etc/ppp/pap-secrets,里面应该有你刚才设置的账号和密码(密码是*)。
4. 编辑/etc/ppp/pppoe.conf
ETH=eth1 将eth1改为eth0(如果你只有一个网卡的话) [email protected] 将[email protected]改为你刚才设置的ADSL账号 别的不要动。
5. 查看/etc/resolv.conf
nameserver xxx.xxx.xxx.xxx (应该是你设置的第一DNS地址)
nameserver xxx.xxx.xxx.xxx (应该是你设置的第二DNS地址)
6. 运行adsl-connect &连接,期间可以查看你的链接状态:adsl-status
Ⅵ linux系统连不了网,ifconfig后显示如下内容,怎么解决
楼上是在瞎扯
执行ifconfig -a
如果是按照正常安装的 肯定会多出来一个接口,比如叫enp3s0
然后编辑配置文件
nano /etc/network/interfaces
auto enp3so
iface enp3s0 inet dhcp
然后保存退出
重启系统即可联网
希望可以帮助你 请采纳
Ⅶ Linux系统centos7连不上网
首先,可以通过虚拟机设定网络连接方式为”NAT 网络“,如下图:
NAT网络连接方式
接着,设置系统网卡配置文件,
centos6通常是:’/etc/sysconfig/network-scripts/ifcfg-eth0’
centos7通常是:’/etc/sysconfig/network-scripts/ifcfg-eno*(自动随机生成)’
vim /etc/sysconfig/network-scripts/ifcfg-eth0进行编辑
通常该文件内只要有最基本的几项信息就可以,如下:
DEVICE=eth0 # 网卡对应的设备名称(eth0或者别的名字取决于系统)
HWADDR=08:00:27:FF:08:E9 #对应网卡物理地址,这里得跟虚拟机配置一致
ONBOOT=yes # 设置网卡设备随系统启动
BOOTPROTO=dhcp # 将网卡获取IP的方式设置为dhcp
Ⅷ 虚拟机的linux为什么连不上网
改成dhcp自动获取,ONBOOT改成yes,开机自启动,然重启网络服务就可以了
Ⅸ linux系统网络连接
首先,要确保你用来上网的设备已经在linux被安装好了,常见的设备linux都能自动识别,但对内猫的兼容不大好.
然后,根据你的上网方式具体配置.
拨号上网:在k菜单->->更多应用程序中有拨号工具kppp.在运行kppp后点设置,在kppp配置窗口中的设备选项卡中选择你的调
制解调器,然后在帐号选项卡点击新建按钮后点击对话框设置.在弹出的对话框中可以设置拨号的:电话号码/IP/网关和DNS等.
ADSL专线:k菜单->系统设置->网络,单击新建按钮,选择xDSL联接点前进,然后按照向导设置即可.
LAN居域网方式:k菜单->系统设置->网络,选择正确的网卡(eth0,eth1等等)后点击编辑按钮即可配置.