Linux Iptables: Add / Delete An IP Address Remotely Using A Shell Script

Posted on in Categories , , , , , , , , last updated October 22, 2009

I’ve root ssh access and need to add / delete a few IP address on fly using the IPtables command via local shell script. How do I add or delete an IP address remotely over the SSH session under CentOS / Redhat / RHEL / Debian / Ubuntu Linux?

Router ARP Cache is Not Releasing Linux / UNIX Server IP address

Posted on in Categories , , , , , , , last updated January 25, 2008

Q. Recently we made changes to our server hardware and swapped all IP address from old to a new server. However, 2 IP addresses are not get updated due to arp cache issues (IPs are cached on the router). They are going to other servers. How do I solve this problem under Redhat Enterprise Linux version 5.0 or any other Linux distribution?
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