2023年6月17日 · Spanning Tree Protocol (STP) attacks are a type of cyber attack that exploit vulnerabilities in the STP protocol to manipulate network behavior. This protocol is commonly used in computer networks to prevent loops, but attackers can exploit weaknesses to create loops or shut the entire network down.

2017年5月19日 · 本篇文章將會介紹攻擊 Spanning Tree Protocol 的方法，使網絡裡的 Switch 無法正常運作，或者錯誤地改變了 Topology。 Spanning Tree Protocol Attack 的後果可以相當嚴重，例如可以令網絡癱瘓、資料被竊取和中間人攻擊 (Man-in-the-middle Attack)，必需正視。 在閱讀本文之前，讀者必需對 Spanning Tree Protocol 的運作深入了解，若信心不夠可先查看以下文章： Spanning Tree Protocol (STP) 生成樹協定。 本文目的只為學術研究，解釋網絡漏洞及防治方 …

2021年3月24日 · There are several ways to "attack" an STP network. You need to secure edge ports (or other untrusted ports) with options like. root-guard - prevents a port to become root port; bpdu-guard - disables a port on BPDU reception; bpdu-filter - ignores BPDUs received on a given port (disabling loop detection by STP!)

In local networks, the Spanning Tree Protocol (STP), which works on OSI Layer 2, plays an important role in ensuring a stable network infrastructure. As a protocol to avoid loops, it enables a redundant network topology and protects against data loss and network congestion.

2024年9月19日 · Network loops lead to broadcast storms, multiple frame copies, and MAC address-table instability. This is where the Spanning-Tree Protocol (STP) comes in. The role of the STP is to create a loop less logical topology, in redundant networks. The purpose of this paper is to briefly describe the STP and it's function in redundant network topologies.

STP attack. If an attacker has access to switch ports that are able to become trunk ports, he can introduce a rogue switch into the network. Remember that Cisco switches have all the ports in “dynamic desirable” mode by default.

2024年9月18日 · STP根桥攻击是一种针对STP机制的安全威胁，攻击者可以通过伪造具有更优BPDU（Bridge Protocol Data Unit）信息的数据包来尝试改变现有的根桥。 BPDU中包含了诸如桥ID、根路径成本等信息，其中桥ID由优先级和MAC地址组成。 在STP 算法 中，桥ID数值越小的交换机会被选为根桥。 篡改BPDU信息：攻击者可能向网络发送精心构造的BPDU数据包，这些数据包携带了比当前根桥更低的桥ID值。 如果网络中的其他交换机接收到了这样的BPDU，并认为 …

2019年11月8日 · 本文详细介绍了Spanning Tree协议在防止网络环路和广播风暴中的应用，包括广播风暴抑制配置、端口环路检测原理及配置、STP协议的基本原理与配置，以及STP安全防范措施，如Root Guard、BPDU Guard和BPDU Filter，以应对STP Spoofing和BPDU DoS攻击。

2021年5月11日 · STP根桥攻击是一种针对STP机制的安全威胁，攻击者可以通过伪造具有更优BPDU（Bridge Protocol Data Unit）信息的数据包来尝试改变现有的根桥。 所有 交换机 都会参与到选举根桥的过程中，并且根据一定的规则选出最优的根桥。

Conducting STP attacks is now within the reach of a wide population, thanks to the availability of point-and-shoot attacks tools. Fortunately, simple features widely available on a range of switches, such as BPDU-guard, provide effective measures against spanning-tree–based exploits.