packet-injection | 易学教程

Change TCP Payload with nfqueue/scapy

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问题 Hello I am using nfqueue and scapy and I my goal is to recieve packets at my NFQUEUE, change the payload and resend them. I can change fields like the TTL without any kind of problem, but when it comes to change the payload, I am encoutering problems. When I change the payload, I sniff the packet with wireshark and apparently I send the packet with the payload modified, but the server doesn't answer. This is my code: #!/usr/bin/env python import nfqueue from scapy.all import * def callback

to monitor local pc network and block ip's is winpcap is the tool?

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问题 i need to build network monitor that sniff the network and to hold ip policy that will enable me to block the network based on this policy for example: if im getting incoming http protocol from ip that is in my ip policy black list and now i like to block it and for example redirect this http request so it could contain now my http packet ( packet injection ? ) dose winpcap can do the job ? To be more to the point basically what i need is to build simple url blocking app .. Which approach

How are access units aligned within PES packets in Apple's HLS?

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问题 Does Apple specify this? How many access units should one put in a PES packet payload? Also, I'm wondering which prefix start codes (if any) are present in PES packets. I assume that the one preceding the first NAL unit within an access unit is useless and mustn't be put. Right? I'd like to know how it's done specifically in HLS - not necessarily any other MPEG-2 TS application. 回答1: I'd like to know how it's done specifically in HLS - not necessarily any other MPEG-2 TS application. HLS is a

How are access units aligned within PES packets in Apple's HLS?

阅读更多关于 How are access units aligned within PES packets in Apple's HLS?

Does Apple specify this? How many access units should one put in a PES packet payload? Also, I'm wondering which prefix start codes (if any) are present in PES packets. I assume that the one preceding the first NAL unit within an access unit is useless and mustn't be put. Right? I'd like to know how it's done specifically in HLS - not necessarily any other MPEG-2 TS application. I'd like to know how it's done specifically in HLS - not necessarily any other MPEG-2 TS application. HLS is a standard MPEG-2 TS stream. HLS does not do it any differently, except limit to a single audio and singe

Change TCP Payload with nfqueue/scapy

阅读更多关于 Change TCP Payload with nfqueue/scapy

Hello I am using nfqueue and scapy and I my goal is to recieve packets at my NFQUEUE, change the payload and resend them. I can change fields like the TTL without any kind of problem, but when it comes to change the payload, I am encoutering problems. When I change the payload, I sniff the packet with wireshark and apparently I send the packet with the payload modified, but the server doesn't answer. This is my code: #!/usr/bin/env python import nfqueue from scapy.all import * def callback(payload): data = payload.get_data() pkt = IP(data) pkt[TCP].payload = str(pkt[TCP].payload).replace("ABC"