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1. Overview There could be many reasons to always upgrade Cisco ASA firewall IOS software to the latest version. The most common reasons are first to fix the bug, second to fix security vulnerability, and the last one is for the stability reason. In the clustering environment of Cisco…
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1. Overview There could be many reasons to always upgrade Cisco ASA firewall IOS software to the latest version. The most common reasons are first to fix the bug, second to fix security vulnerability, and the last one is for the stability reason. Since the firewall is not clustered,…
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1. Overview To achieve the high availability purpose of site-to-site IPSec VPN between head office and remote branch offices, we need to combine Virtual Router Redundancy Protocol (VRRP) with IPSec protocol. VPN devices at the remote branch offices will peer with virtual IP address of VRRP in head office….
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1. Overview Virtual Router Redundancy Protocol (VRRP) is the open standard version of Cisco proprietary protocol called HSRP, so it can support products from different vendors including Huawei devices. The VRRP protocol works exactly the same as HSRP in providing a gateway using one virtual IP address. One of…
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1. Overview To achieve the high availability purpose of site-to-site IPSec VPN between head office and remote branch offices, we need to combine Hot Standby Router Protocol (HSRP) with IPSec protocol. VPN devices at the remote branch offices will peer with virtual IP address of HSRP in head office….
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1. Overview To achieve the high availability purpose of site-to-site IPSec VPN between head office and remote branch offices, we need to combine Hot Standby Router Protocol (HSRP) with IPSec protocol. VPN devices at the remote branch offices will peer with virtual IP address of HSRP in head office….
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