Date registered: 25th July 2015
Aug 20
What’s the default username and password for the APC’s PowerChute Business Edition Agent? Unfortunately (for your purpose; from security perspective – it’s a good thing) all the recent versions of the PowerChute Business Edition (at least starting with 8.0.1 Single Node agent, which is what I was using) do not provide a default username and …
Aug 20
To check MD5 checksum of a file in linux go to folder containing file and md5 checksum which normally ends “.md5″. First display content of existing file: # cat yourfile.md5 bc4708c34c971595649207fe1ea012ba yourfile Next generate new checksum using md5sum command: # md5sum yourfile bc4708c34c971595649207fe1ea012ba yourfile Compare both outputs, of they are not identical file has been …
Aug 17
Reset-O TCP flag means that the Reset is from the Outside. Here is the syslog messages reference: http://www.cisco.com/en/US/docs/security/fwsm/fwsm40/system/message/logmsgs_external_docbase_0900e4b18059d73b_4container_external_docbase_0900e4b180ef4f45.html#wp1280675
Aug 16
iwconfig is dedicated to the wireless interfaces. It is used to set the parameters of the network interface which are specific to the wireless operation. Check WIFI setting, including current signal strength setting: [root@linux ~]# iwconfig Example: [root@linux ~]# iwconfig wlan0 wlan0 IEEE 802.11g ESSID:"OSU_PUB" Mode:Managed Frequency:2.427 GHz Access Point: 00:0D:9D:C6:38:2D Bit Rate=48 Mb/s Tx-Power=20 …
Aug 16
In order to use nslookup tool bind-utils package has to be installed first. Command to install the package: sudo yum install bind-utils
Aug 16
Typically scp should be already available on most Centos distributions. If scp client is missing in your distribution simply install openssh-clients package using yum. yum install openssh-clients That’s it… Confirm that scp works by simply typing scp to get help page [root@linux ~]# scp usage: scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file] [-l limit] …
Aug 14
DNS (Domain Name System) allow us to use names instead of IP addresses which is more human friendly way of naming network resources like web sites. How does DNS resolve? Let’s imagine you want to open a web site called www.website.com so make a DNS request on the browser by typing www.website.com into address bar. …
Aug 14
The Cisco CSS offers 2 address translation methods (NAT); Source Group and Destination Group. Source Group When a connection is initiated outbound through the Cisco CSS (from any of the group services) the source IP is translated to the groups VIP address. Source group servers are defined using the add service [service name] command. Example : When SERVER-A initiates …
Aug 13
If you use load balancer in your environment for web content load balancing is always recommended to offload SSL traffic before it gets to web servers. Most application load balancers has hardware SSL modules to increase performance in comparison to the servers which have to do it in software. Additionally without decryption load balancer will …
