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How to properly create file for firewall network-interface in CentOS 7.1?
I read a very good publication regarding firewall. It says about files
/etc/sysconfig/network-scripts/ifcfg-ethX , where X it is number network-interface.
The following command shows that I have two interfaces:
public interfaces: eth0 eth1
But I have no such file
/etc/sysconfig/network-scripts/ifcfg-eth1 , only
When I create a empty file
/etc/sysconfig/network-scripts/ifcfg-eth1 and restart the network, I have error:
$ sudo systemctl restart network.service Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn' for details. $ systemctl status network.service network.service - LSB: Bring up/down networking Loaded: loaded (/etc/rc.d/init.d/network) Active: failed (Result: exit-code) since Thu 2015-11-12 08:22:39 EET; 23s ago Process: 5560 ExecStop=/etc/rc.d/init.d/network stop (code=exited, status=0/SUCCESS) Process: 5832 ExecStart=/etc/rc.d/init.d/network start (code=exited,status=1/FAILURE)
I assume that each interface has to be limited by own IP-address. But I have only one public IPv4. I can have more than one firewall-zone, in such a case?
ip addr such
$ ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 04:01:84:4d:d3:01 brd ff:ff:ff:ff:ff:ff inet 22.214.171.124/18 brd 126.96.36.199 scope global eth0 valid_lft forever preferred_lft forever inet 10.19.0.5/16 brd 10.19.255.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::601:84ff:fe4d:d301/64 scope link valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 04:01:84:4d:d3:02 brd ff:ff:ff:ff:ff:ff inet6 fe80::601:84ff:fe4d:d302/64 scope link valid_lft forever preferred_lft forever
So, how to properly create file
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