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Category: Network Tools

Internet/Network Tools/Open Source Tools

Quick Premier on migration to Curl for a socket programmer

Posted on August 3, 2017 by Vishal Jain

libcurl is quite powerful and allows many widely used protocols. In this post I discuss how a simple socket programmer could find his way using libcurl.

Internet/Network Tools

AgentX Tutorial using Net-SNMP – Trap implementation

Posted on January 30, 2017 by Vishal Jain

`mib2c -c mib2c.notify.conf ` provides an easy way to create `C` code for outgoing SNMP Traps. Implementation is simple where application would copy the intere...

Network Tools

AgentX Tutorial using Net-SNMP – Simple Table MIB for Dummies

Posted on January 29, 2017 by Vishal Jain

`mib2c` provides a way to compile MIB for a given Table and generate `C` code for it. The easiest one is to use MIB for Dummies configuration. It is not very ef...

Network Tools

AgentX Tutorial using Net-SNMP – Simple Scalars

Posted on January 14, 2017 by Vishal Jain

smilint, mib2c with mib2c.scalar.conf were used to create simple agentx agent to work with net-snmp.

Debugging Tools/Internet/Network Tools/Unix Admin

Net-SNMP configuration for non-root AgentX application

Posted on January 9, 2017 by Vishal Jain

By using a TCP Socket one can allow a non-root AgentX application/agent to connect to Net-SNMP masteragent. But this should be used for development purpose only...

Network Tools/Unix Admin

Capture local network traffic for multi-homed host

Posted on August 21, 2016 by Vishal Jain

If both end-points of a socket are on local system, network traffic will be seen on loopback interface even if applications are using non-loopback interface (e....

Internet/Network Tools/Unix Admin

vpn : Split Tunnel Concept

Posted on July 4, 2012 by Vishal Jain

Split tunnel allows user to access local network resources and divert Internet traffic away from tunnel while still remain connected to company vpn. Specific ne...

Hardware/Internet/Network Tools

Rename network interface on ubuntu

Posted on May 27, 2012 by Vishal Jain

/etc/udev/rules.d/70-persistent-net.rules defines the name for network interfaces.

Debugging Tools/Network Tools/Open Source Tools/Unix Admin

snmp : find network information of a system centrally

Posted on August 6, 2011 by Vishal Jain

Using snmpwalk on interface table (1.3.6.1.2.1.4.20.1.1 and 1.3.6.1.2.1.4.20.1.3) one can retrieve network information of a system centrally.

Network Tools/OS Interoperability/Unix Admin

Most often used Network Sniffer flags for tcpdump and snoop

Posted on July 12, 2010 by Vishal Jain

Selecting interface, capturing full data, writing to a file etc. are some of the most often used Packet capture flags.

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