ip

Linux – Removing all IP information from an interface

July 22, 2010 / Linux, Tech / By

If an interface has already had IP addresses assigned to it, and all of the addresses need to be removed (along with their routes), there is one handy command to accomplish all of these tasks. ip address flush takes an interface name as an argument. Let’s look at the output of ip address show just before and just after removing all IPs.

[root@logistic]# ip address show dev eth0
2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
link/ether 00:80:c8:f8:4a:51 brd ff:ff:ff:ff:ff:ff
inet 192.168.99.35/24 brd 192.168.99.255 scope global eth0
inet 192.168.99.37/24 brd 192.168.99.255 scope global secondary eth0:0
[root@logistic]# ip address flush
Flush requires arguments.
[root@logistic]# ip address flush dev eth0
[root@logistic]# ip address show dev eth0
2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
link/ether 00:80:c8:f8:4a:51 brd ff:ff:ff:ff:ff:ff

ProFTP(D) – listen on single ip

December 2, 2009 / Daemon, Networking / By

I don’t use ftp, but wordpress comes with this nice feature to upgrade plugins automatically from the web admin interface that needs ftp.

the problem is I don’t want to enable the ftp service and make it available to the rest of the world just for that.

So I needs the following two options in proftpd.conf:

DefaultAddress 127.0.0.1
SocketBindTight on

Now restart proftpd and you’re done.