![]() UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 My network is setup in the following manner: $ ifconfigĮth0 Link encap:Ethernet HWaddr 00:18:f8:0d:c0:d5 I'm using a test machine running Ubuntu Server 13.10: $ uname -a The fact that it's able to bind to different addresses allows it to bypass some automatic per-hostname throttling and cause trouble despite existing measures in place.īasically, the problem I'm trying to solve boils down to this. It binds to a bunch of ip addresses on an IPv6 /64 and is then used to flood IRC from hundreds or thousands of different ip addresses. ![]() I'm trying to replicate a malicious script that I've seen in the wild for the purposes of testing my options to respond to it. In addition, to help ensure the reliability of the IPv6 stack of Apple operating systems, Apple devices enforce various limits on IPv6-related data structures, such as the number of prefixes per interface.I'm not 100% sure I'm using the correct terminology in the title, so if someone knows better than I do please amend it. Among other measures, these inhibit attacks where the upper-layer header can be found only in the second fragment (as shown below), which in turn could cause ambiguities for security controls like stateless packet filters. To protect against attacks based on IPv6 extension headers and fragmentation, Apple devices implement protection measures specified in RFC 6980, RFC 7112, and RFC 8021. This approach is used in iOS 14, iPadOS 14, and watchOS 7. The network’s SSID is incorporated as an additional element for the address generation, similar to the Network_ID parameter as of RFC 7217. Aligned with the Private Wi-Fi address feature introduced in iOS 14, iPadOS 14, and watchOS 7, a unique link-local address is generated for every Wi-Fi network that a device joins. Furthermore, temporary addresses are created with a preferred lifetime of 24 hours, and these are used by default for any new connections. The address generation algorithm is based on cryptographically generated addresses as of RFC 3972, enhanced by an interface-specific modifier to warrant that even different interfaces on the same network eventually have different addresses. When Stateless Address Autoconfiguration (SLAAC) is used, the IPv6 addresses of all interfaces are generated in a way that helps prevent tracking devices across networks and at the same time allows for a good user experience by ensuring address stability when no network changes take place.
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