Hi, I have some network data I recorded with Wireshark on my ethernet
interface and want to replay it on my loopback interface. The only
data I need to change is the destination IP address (I recorded the
data coming to 192.168.1.1 and I want it to be 127.0.0.1). I already
filtered the data with wireshark so if I can change all the messages
that would be great.
I tried this:
sudo tcprewrite --infile=last_run.pcap --outfile=last_runX.pcap --
dstipmap=192.168.1.1/32:127.0.0.1/32
But when I replay that pcap data I dont see any output (as per the
python script I have below which should echo the data). I know the
python script works because i tested it with a similar python udp
sender.
I also tried this
sudo tcprewrite --pnat=192.168.1.1/32:127.0.0.1/32 --
infile=last_run.pcap --outfile=last_runX.pcap --skipbroadcast
And that didnt provide the data either.
I tried replaying with this
sudo tcpreplay --intf1=eth0 last_runX.pcap
and
sudo tcpreplay --intf1=lo last_runX.pcap
I can send either file to a computer on my network with the address
192.168.1.1 and it will get the data. I want to be able to get it on
my local machine without needing to have two computers all the time.
Am I doing something wrong? Thanks for the help.
#!/usr/bin/env python
import socket
aListenAddress="127.0.0.1"
aListenPort = 15500
BufferSize = 1024
if __name__ == "__main__":
# Bind to the socket
s = socket.socket( socket.AF_INET, socket.SOCK_DGRAM )
s.bind( (aListenAddress,aListenPort) )
while True:
data, addr = s.recvfrom( BufferSize )
print('Message: ' + str(data) )
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