Optical Bypass Switches A bypass switch (or bypass TAP) is a hardware device that provides a fail-safe access port for an in-line active network device such as an intrusion prevention system (IPS), next-generation firewall, network switch etc. if the device loses power, experiences a software failure, or is taken off-line for updates or upgrades, traffic can no longer flow […]
Optical ByPass Switching Read More »
Cacti is a free network graphing tool that is used to visualize the time series data obtained by the Round-Robin database tool (RDD tool). The tool polls network devices like switches and routers via SNMP and then graphs their data. Some of the data that are polled are CPU load, temperature, uptime and network bandwidth
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Accessible RDP This report identifies hosts that have Remote Desktop (RDP) Service running and accessible to the world on the Internet. Misconfigured RDP can allow miscreants access to the desktop of a vulnerable host and can also allow for information gathering on a target host as the SSL certificate used by RDP often contains the
After OS upgrade on Junos MX5, you are hit with following notice upon reboot; — JUNOS 13.3R9.13 built 2016-03-01 07:16:35 UTC — NOTICE: System is running on alternate media device (/dev/da1s1a) This error is as a result of various scenarios and below are the possible causes: 1.) A software failure/error on the primary media (flash)
Traffic Analysis is a critical component in network planning, security and troubleshooting. For you to perform traffic analysis, you need to collect network traffic flows from the different aggregation points in your network such as routers and switches. In Juniper, they take advantage of \’sampling\’ packets and frames going through a switch or router. The
Traffic Flow Sampling in Juniper Mx-5 and Mx-480 Routers IPv4 and IPv6 Read More »
In networks where end-users determine the vlan-id\’s to be ran across your backbone network with a possibility that these vlans-id\’s will clash, Q-in-Q vlan translation is the solution for you. Q-in-Q vlan translation allows you bundle end-user vlans into a single vlan giving you the power to determine what vlan-id to use without requesting the
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Problem Statement There are times when a router/switch can only boot up in ROMmon. This happens when the router/switch has no valid Cisco IOS software or bootflash image to boot from. This disaster recovery situation arises when, for example, the Cisco IOS software on the router/switch is corrupted or has crashed. There are also cases
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1. Get the bundle from Comodo in crt format, or sometimes like a zip file. You can also login to https://cert-manager.com/customer/eI4Africa and download the X.509 Root/Intermediate(s) bundle. 2. Copy the downloaded bundle to the mail server under /tmp. The bundle contains the following files: AddTrustExternalCARoot.crt COMODORSAAddTrustCA.crt COMODORSADomainValidationSecureServerCA.crt
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This tutorial helps in configuration of Apache 2 per user web directories. This enables Apache2 to serve we pages home user directories under a specific directory /home/username/public_html Users accessing the page will in turn visit http://server-name-or-ip-address/~username
Apache2 per user web directories – Ubuntu 14.04 Read More »
