Posts Tagged ‘network’

linux two interfaces same subnet

February 27th, 2015 No comments

On RHEL6 and RHEL7 once you add a second interface on the same subnet, it does not work ( no ping)
The cause of the problem is a change on the parameter rp_filter

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Categories: HowTo, Windows Tags: , , ,

CentOS7 change interface name

August 14th, 2014 1 comment

In CentOS7 or RedHat7 again we have funky strange network interfaces names…

To change the name back to eth0 just follow:
1. Rename the device name
vi /etc/sysconfig/network-scripts/ifcfg-ens**
2. Rename the file
mv /etc/sysconfig/network-scripts/ifcfg-ens192 /etc/sysconfig/network-scripts/ifcfg-eth0

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Categories: HowTo, Linux Tags: , , ,

Linux network tools

May 25th, 2012 2 comments

This is a small list of some really nice linux tools I recommend every sysadmin to have somewhere.

Categories: HowTo, Linux Tags: , , , , , , ,

How to Install iftop

July 21st, 2011 No comments

How to Install iftop on RedHat 6 64 bits, CentOS.
iftop is a very very cool tool. It displays what connections are made and their usage etc…

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Categories: HowTo, Linux, Security Tags: , , , , , , ,


January 29th, 2010 No comments

VLAN testing in ESX 4, So I need to test lots of VLANs and make sure connectivity is OK.

Well here is quick and easy way to do it?
1. Create a port group on the vSwitch with ID 4095. This will allow the VM
to connect to all available VLANs available to the host.

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Categories: HowTo Tags: , , , , , , ,

nlb load balance linux

January 28th, 2010 3 comments

Load balancing can help with almost any kind of service, including HTTP, DNS, FTP, POP/IMAP, RDP and SMTP.
There are a number of open source load balancing applications, but one simpleĀ  command-line load balancer, balance, remains one of the most popular available.
Description: simple but powerful generic TCP proxy
Long Description: Balance is a simple but powerful generic TCP proxy with round-robin load balancing and failover mechanisms. Its behaviour can be controlled at runtime using a simple command line syntax.

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Linux Better Network Manager

April 21st, 2009 No comments

I finally found a better product that default netowkr-manger gnome (the one that comes with ubuntu)
Its name is wicd-client and its way better check it out at:

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