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Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance...

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Expert Spotlight
Mohammad RummanehSr.Network & Security Engineer

You Have Computer...You Have Internet ..So Build Your Own Lab

Article

Automating Cisco Router/Switch changes with Python and Netmiko

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A guide on the process of automating change or gathering data from multiple Cisco IOS devices. If this can help you - please use it. God knows we all need a few extra minutes in our day.
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Scenario 10

IPsec VPN Configuration On Cisco IOS XE - Part 10 - Dual Hub Dual Cloud Phase 3 Dynamic Multipoint VPN (DMVPN)

This article is about building Dynamic Multipoint VPN tunnels in Cisco CSR1000V router with IOS XE. There are two CSR1000V hub routers configured with dual hub dual cloud Phase 3 DMVPN.
Article
Scenario 9

IPsec VPN Configuration On Cisco IOS XE - Part 9 - Dual Hub Phase 3 Dynamic Multipoint VPN (DMVPN) Cloud

This article is about building Dynamic Multipoint VPN tunnels in Cisco CSR1000V router with IOS XE. There are two CSR1000V hub routers configured with single tier Phase 3 DMVPN Cloud.
Article
Scenario 8

IPsec VPN Configuration On Cisco IOS XE - Part 8 - Single Tier Phase 3 Dynamic Multipoint VPN (DMVPN) Cloud

This article is about building Dynamic Multipoint VPN tunnels in Cisco CSR1000V router with IOS XE. There are two spoke routers connected to single tier Phase 3 DMVPN Cloud hosted on CSR1000V router.
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Spam Passing through Cisco Cloud Email Security -

Having Problems with Lots of Spam Passing through Cisco Cloud Email Security Since Last Week?

If you're having problems where a lot of messages that Cisco Cloud Email Security would normally

Article
Scenario 7

IPsec VPN Configuration On Cisco IOS XE - Part 7 - Single Tier Dynamic Multipoint VPN (DMVPN) Cloud

This article is about building Dynamic Multipoint VPN tunnels in Cisco CSR1000V router with IOS XE. There are two spoke routers connected to single tier Phase 1 DMVPN Cloud hosted on CSR1000V router.
Article
Scenario 6

IPsec VPN Configuration On Cisco IOS XE - Part 6 - Route Based VPN With Redundant Routers in DC (HUB)

This article is about building a Route Based site to site VPN tunnels with Redundant Routers in DC (HUB) in Cisco CSR1000V router with IOS XE. There are four Route Based IPsec VPN tunnels configured on two CSR1000V routers as redundant routers pair.
Article
Scenario 5

IPsec VPN Configuration On Cisco IOS XE - Part 5 - Route Based VPN With VRF And Dynamic Routing (OSPF)

This article is about building a Route Based site to site VPN tunnels with VRF and dynamic routing protocol (OSPF) in Cisco CSR1000V router with IOS XE. There are two Route Based IPsec VPN tunnels configured on CSR1000V router, traffic from app server is with NAT and rest is without NAT.
Article
Scenario 4

IPsec VPN Configuration On Cisco IOS XE - Part 4 - Route Based VPN With Dynamic Routing (OSPF)

This article is about building a Route Based site to site VPN tunnels with dynamic routing protocol (OSPF) in Cisco CSR1000V router with IOS XE. There are two Route Based IPsec VPN tunnels configured on CSR1000V router, traffic from app server is with NAT and rest is without NAT.
Article
Scenario 3

IPsec VPN Configuration On Cisco IOS XE - Part 3 - Route Based VPN

This article is about building a Route Based site to site VPN tunnels in Cisco CSR1000V router with IOS XE. There are two Route Based IPsec VPN tunnels configured on CSR1000V router, traffic from app server is with NAT and rest is without NAT.
Article
Scenario 2

IPsec VPN Configuration On Cisco IOS XE - Part 2 - VRF-Aware Policy Based VPN

This article is about building a VRF-Aware site to site VPN tunnels in Cisco CSR1000V router with IOS XE. There are two VRF-Aware Policy Based IPsec VPN tunnels configured on CSR1000V router one with NAT and another without NAT.
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Recover a Password on Cisco Devices

HOW TO: Recover a Password on Cisco Devices

Have a Cisco router that you forgot the password or maybe you bought a used router that is locked with a password? This article will guide you through the steps on how to recover the password on your Cisco gear.
Article
Scenario 1

IPsec VPN Configuration On Cisco IOS XE - Part 1 - Policy Based VPN

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This article is about building a site to site VPN tunnels in Cisco CSR1000V router with IOS XE. There are two Policy Based IPsec VPN tunnels configured on CSR1000V router one with NAT and another without NAT.
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Cloud PBX Inbound Calls failure in Hybrid Configurations

Just after setting up Cloud PBX connectivity and migrated Skype users to SFBO, we noticed inbound calls not working but outbound calls would work.
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Monitoring SNMP devices with Zabbix

byDP230
In this article, the configuration steps in Zabbix to monitor devices via SNMP will be discussed with some real examples on Cisco Router/Switch, Catalyst Switch, NAS Synology device.
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The Hidden Gaps in Public and Private Clouds

Considering cloud tradeoffs and determining the right mix for your organization.
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When “It's So Easy” Goes To Pieces: Two Tales About The Complexities Of Azure And Amazon Clouds

As managed cloud service providers, we often get asked to intervene when cloud deployments go awry. Attracted by apparent ease-of-use, flexibility and low computing costs, companies quickly adopt leading public cloud platforms such as Amazon Web Services (AWS) and Microsoft Azure.
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Industrial Networking - Robots are the future

This article explains the fundamentals of industrial networking which ultimately is the backbone network which is providing communications for process devices like robots and other not so interesting stuff.
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Cisco 40GB QSFP ports & QSFP-4SFP-CU1M cables explained

This article is in regards to the Cisco QSFP-4SFP10G-CU1M cables, which are designed to uplink/downlink 40GB ports to 10GB SFP ports. I recently experienced this and found very little configuration documentation on how these are supposed to be configured.
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Why You May Need A Cloud Services Provider For Your SaaS Solution

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Let’s face it: one of the reasons your organization chose a SaaS solution (whether Microsoft Dynamics 365, Netsuite or SAP) is that it is subscription-based. The upkeep is done. Or so you think.

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