Night Reader

Hi all !! Today I am going to show you how to trace TCP packet for our destination. Often we see that we are allowed to browse the site only, and we are not able to trace the destination. In this scenario, we always stuck to check the destination path. first, we have to understand the communication process, Often we see the TCP segment flow the source and destination IP, Source IP having random port and destination IP having the well-known port. Let's start the Technique to troubleshoot the TCP Communication. 1>  We have to install  WinPcap 2> tracetcp.exe to the current working directory of the cmd. like: I have installed in C:\Users\Naresh>tracetcp.exe I have given the link where we can download the necessary tools. https://www.winpcap.org/install/bin/WinPcap_4_1_3.exe https://drive.google.com/file/d/1rLpAQDF3W5twnw0Llpa4G_4Sdbk1QQSF/view?usp=sharing Now you can run the command like this: I...

Today I am going to show you how to configure ARUBA CAP, It's a remote access point which needs to register with the master controller. we have to connect the ARUBA to console port with the console cable. Like this: The details of the Aruba CAP is as below: We have to connect the console cable to the com port of the laptop and Ethernet port to the LAN Switch where the LAN segment will be reachable. and now check the serial port to the device manager, that where the com port assigned. Snapshot: Now open the putty like this: Click on open and turn of the Aruba Device and hit Enter as shown in the snapshot, and follow the snapshot for the next configuration: now hit boot command to start the boot process or wait for the minutes. You will able to see in the snapshot that the AP has been registered with the master controller, So now you can register your Aruba...

Configure the Cent OS in the proxy network for yum update and public repository. It's a not a big deal for this configuration, we have to add simple line into the yum.conf file like this : Note: There is two option to configure the proxy : 1> Put the system host in the IP Pass list in the proxy server. 2> put the username and password in the yum.conf, like this : and move the CentOS-Media.repo to the old directory so that the we can easily and verify the configuration with yum update like this: The reason behind to move the CentOS-Media.repo to the old directory that, if it not found the local media then it will not continue. and be careful  about the proxy setting, you are using one of them. Thanks for reading. Naresh Mahato

Installing LAN Card Drivers In CENTOS 7 Intel NM10/ICH7 NIC Not working Today, I am going to show you how to install the LAN Card drivers in CentOS7. Just installed the opensource OS CentOS 7, but i am not able to assign the IP on the system caused the drivers is not there to drive the LAN card. so, i have checked that the LAN Card is detected by the CentOS 7 or not, like this : and i found the LAN card details as above snapshot. and after the lots of troubleshooting i found that 100Mb ethernet card supported by the e100 driver. I think this Ethernet drivers does not included in the el7 / CentOS7 kernel so it's not supported out of the box. We have to install the kmod-e100 package to enabled the module. First up all we have to download the package and install the rpm and reboot the system. http://rpm.pbone.net/index.php3/stat/4/idpl/26894627/dir//com/kmod-e100-3.5.24-1.el7.elrepo.x86_64.rpm.html Download and move the package to the required system, inst...

check status of AVAYA TRUNK CHECKING WITH VODAFONE PRI Today, I am going to show you how to check the PRI status in AVAYA CALL MANAGER (CM) first up all we have to check the group no. of the PRI using the command list trunk-group. in the above snaps we can see that the trunk group is 35. now we can check the status of the PRI using the status trunk 35. we can see in the snapshot out-of-service means the PRI is down, or having some connectivity issue on the PRI. we have to make sure that if we are using the VODAFONE PRI then the options Disable Restarts in the DS1 CIRCUIT RACK must be enable means "y" should be there. As per as the ISP (VODAFONE) suggestion it must be enabled. otherwise we may face some issue. To change the setting of the DS1 first we have to check the port no which is shown in the above images, and also marked in the below images: now we can check the DS1 CIRCUIT RACK status like this: you can see that the Disable Restarts ...

sflow in HP A5120 and HP 5500 Switches. Today i am going to show you how to enable sflow in HP switches Lets start ! login to the HP switch and configure the following things as listed. sflow agent  sflow collector sflow flow collector sflow sampling-rate sflow counter collector Just like this: [nightread3r]sflow agent ip 192.168.51.98 (Self ip or switch ip) [nightread3r]sflow collector 1 ip 10.0.0.10 (PRTG server ip) description "CLI collector" [nightread3r]int GigabitEthernet 1/0/1 [nightread3r-GigabitEthernet1/0/1]sflow sampling-rate 1000 [nightread3r-GigabitEthernet1/0/1]sflow flow collector 1 [nightread3r-GigabitEthernet1/0/1]sflow counter collector 1 and now go to the PRTG server and add the sensor named sflow, like this: Now wait for a minute so that  sflow sensor will collect the the sflow data after that you can open that: So you can view the all traffic w...

Now i am going to demonstrate that how to install PRTG in windows 7. 1.> we have to down load the PRTG from the :  https://www.paessler.com/download/prtg-download 2> unpack the prtg.zip 3> Before stating we have to install the dot net framework 4.51 or minimum 3.50 : https://www.microsoft.com/en-in/download/details.aspx?id=17718 Now I am going to start the installation of the PRTG. It has been completed the installation, after the instillation the PRTG run the Network Discovery. which discover the whole devices in the same subset including network devices. if the public community is enabled on the SNMP (Simple Network Management Protocol)  then it will discovered the interface as well. Now I am going to show you to add the interface of the HP A5120 Switch. & CISCO SWITCH first i am going to enable the snmp setti...