1 Inside和Outside 很多在Cisco配置过NAT的人都有过一个疑问，那就是inside和outside的区别！以下是Cisco官方文档上关于NAT执行顺序的说明：
考虑到UDP的无状态特性，目前针对其的NAT实现大致可分为Full Cone、Restricted Cone、Port Restricted Cone和Symmetric NAT四种。值得指出的是，对于TCP协议而言，一般来说，目前NAT中针对TCP的实现基本上是一致的，其间并不存在太大差异，这是因为TCP协议本身便是面向连接的，因此无需考虑网络连接无状态所带来复杂性。
以前一直都是使用OPENWRT自带的adblock进行广告过滤，但是总觉得不好用。搜索发现网上牛人都是添加adbyby进行广告过滤，所以我也研究编译了下，并记录了过程。
有个网件的WNDR3700v4，刷了OPENWRT官方的固件后可用FLASH的空间太小，大概就16M可用空间左右，而官方FLASH参数为128M。
VXLAN is an acronym for Virtual extensible Local Area Network. A joint venture by a few companies of which Cisco is one of them.VXLAN is yet another overlay solution which provides a solution to facilitate sending Layer-2 traffic over a Layer-3 network. Also, …
With the release of XE-3.13 VXLAN gets a much awaited unicast flavor. The configuration doesn't change by much [except from the obvious that is there are no multicast configurations]. Multicast VXLAN, read up: https://iteachs.com/?post=110 A part from the addi…
