DHCP snooping is a DHCP security feature that provides security by filtering untrusted DHCP messages and by building and maintaining a DHCP snooping binding table. An untrusted DHCP message is a message that is received from outside the network or firewall causing denial of service attacks.
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Enable/Configure DHCP Snooping in Cisco Catalyst Switches (IOS)
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Read the full post (415 words, 10 images, estimated 1:40 mins reading time)Categories: General.
Tags: Catalyst, Cisco, DHCP, Enable/Configure, Snooping, switches
By IPHere —
November 20, 2014 at 12:13 pm The enhanced password security in Cisco IOS introduced in 12.0(18)S allows an admin to configure MD5 encryption for passwords. Prior to this feature the encryption level on Type 7 passwords used a week encryption and can be cracked easily and the clear text password (type 0) as anyone would know is completely insecure. Anyone who can gain access to the privilege mode can view/decrypt these passwords.
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Configure MD5 encrypted passwords for users on Cisco IOS
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Read the full post (331 words, 10 images, estimated 1:19 mins reading time)Categories: General.
Tags: Cisco, Configure, encrypted, passwords, users
By IPHere —
November 20, 2014 at 12:13 am Back from the holidays only to find my Windows Profile gone missing at work. One of the annoying things was to add all my remote hosts back onto WyseTerm. While the bad news is that there is no single file (which one would expect) that maintains this list, the good news comes in the form of Windows Registry. Yes, the WyseTerm host information is stored in Windows Registry and can be exported from the registry on to a new profile or other users profile.
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Import WyseTerm Host List from one user to another in Windows
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Read the full post (199 words, 10 images, estimated 48 secs reading time)Categories: General.
Tags: another, from, Host, Import, List, user, Windows, WyseTerm
By IPHere —
November 18, 2014 at 6:15 pm Cisco Routers and Switches with L3 routing functions are seen to have problems with High CPU usage when SNMP is enabled. This can range anything from 15% to 40%. According to Cisco, these are low priority processes and other priority processes requiring CPU cycles are given priority over these processes and this level of CPU utilisation can be is normal. However, it is always better to be safe than sorry and get the CPU utilisation caused by SNMP to bare minimum so as to ensure the Routers function smoothly.
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High CPU usage when SNMP is enabled in Cisco Routers
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Read the full post (292 words, 10 images, estimated 1:10 mins reading time)Categories: General.
Tags: Cisco, enabled, High, Routers, SNMP, usage
By IPHere —
November 18, 2014 at 12:12 pm VLAN Interfaces are required in network scenarios where you have different VLANs and need Inter-VLAN switching on Layer3 (Routing capable) switches. Every VLAN that needs to be routed should have a VLAN interface.
Let's say we have VLAN 10 which hosts the subnet 192.168.10.0 subnet, VLAN hosts 192.168.20.0 subnet and VLAN 30 hosts 192.168.30.0 subnet. For Inter-VLAN routing to work, we need to have a VLAN interface setup for each of these VLANs and configured with an IP address from the same subnet which will be the default Gateway for that subnet. Lets say, 192.168.10.254,192.168.20.254.192.168.30.254 are the IP addresses for VLAN Interfaces of VLAn 10,20,30 respectively.
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How to create VLAN Interfaces for InterVLAN Routing in Cisco IOS
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Read the full post (281 words, 10 images, estimated 1:07 mins reading time)Categories: General.
Tags: Cisco, create, Interfaces, InterVLAN, Routing, VLAN
By IPHere —
November 18, 2014 at 6:13 am
Today, I had to troubleshoot a very peculiar problem on my Cisco Catalyst 3750 switches in two different sites. To cut a long story short, both the sites originally had IPSec VPNs over ADSL internet andtherefore static routes added to pass through their VPN firewalls. However, with a recent WAN migration with leased lines, all traffic moved to the WAN routers.
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Unable to delete Stale/Obsolete statc routes in Cisco IOS
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Read the full post (222 words, 10 images, estimated 53 secs reading time)Categories: General.
Tags: Cisco, delete, routes, Stale/Obsolete, statc, Unable
By IPHere —
November 18, 2014 at 12:12 am
If you are attached to a corporate or an enterprise network and connect to internet from behind a BlueCoat proxy which proxies FTP connections then FileZilla FTP client needs needs to be configured accordingly to get it work properly. There is an FTP proxy configuration and a Generic Proxy configuration that can be set in FileZilla client.
Using a Generic Proxy forces it to use Passive Mode connections.However, if you need to use Active mode FTP connections then FTP Proxy should be configured.
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FileZilla FTP Client configuration through BlueCoat proxy
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Read the full post (259 words, 12 images, estimated 1:02 mins reading time)Categories: General.
Tags: BlueCoat, Client, configuration, FileZilla, proxy, through
By IPHere —
November 17, 2014 at 6:14 pm A mixture of excitement and danger. No, I’m not talking about a theme-park thrill ride, I’m talking about the future of technology as seen by users surveyed for Intel Security’s Safeguarding the Future of Digital America in 2025. Here’s a peek at some of the things people think will happen within the next decade:
- Two out of three consumers expect to access work data using facial or voice recognition
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Internet of Things security will be imperative as wearables, automobiles and more sign on
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Read the full post (190 words, estimated 46 secs reading time) Categories: General.
Tags: automobiles, imperative, Internet, More, Security, sign, Things, wearables
By IPHere —
November 8, 2014 at 12:13 am CurrentC—a mobile payment system developed by a consortium of major retail chains—has made headlines lately for brazenly blocking Apple Pay transactions. The heat CurrentC faced from that poor strategic move is nothing, though, compared to the trouble the embryonic payment system is in now, thanks to news of a data breach.
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CurrentC is DOA before it’s even launched
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Read the full post (123 words, estimated 30 secs reading time) Categories: General.
Tags: Before, CurrentC, even, It's, launched
By IPHere —
October 31, 2014 at 7:12 am You can’t have good security unless you keep your operating system and applications current, with all of the latest patches and updates. Microsoft makes it easy for Windows users with its automatic updates, and yet a new report finds that many PCs with automatic updates enabled are nevertheless not actually up to date.
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Report: Many Windows automatic updates are thwarted by user inaction
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Read the full post (189 words, estimated 45 secs reading time) Categories: General.
Tags: Automatic, inaction, Many, Report, thwarted, Updates, user, Windows
By IPHere —
October 29, 2014 at 1:12 am 