Skip to content

change bpf filter "ip proto UDP" to "ip proto 17" #2

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Thus0 wants to merge 1 commit into
base: master
Choose a base branch
from
Open

change bpf filter "ip proto UDP" to "ip proto 17" #2

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 4 additions & 4 deletions src/proxy.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@ def _sniff_in_from_client(self, src_ip, dst_ip, dst_port, interf, interf_mac, ne
self._logger.debug("Created a new sniffer to sniff incoming client packets. Process id: "
f"{os.getpid()}, Parent id: {os.getppid()}")
while True:
sniff(filter=f"ip proto UDP and not ether src {interf_mac} and ip dst host {dst_ip} and"
sniff(filter=f"ip proto 17 and not ether src {interf_mac} and ip dst host {dst_ip} and"
f" ip src host {src_ip} and ((dst port {dst_port}) or (((ip[6:2] > 0) or "
"(ip[7] > 0)) and (not ip[6] = 64)))",
iface=interf,
Expand All @@ -39,7 +39,7 @@ def _sniff_out_to_client(self, src_ip, src_port, interf, new_src_ip, new_src_por
self._logger.debug("Created a new sniffer to sniff outgoing client packets. Process id: "
f"{os.getpid()}, Parent id: {os.getppid()}")
while True:
sniff(filter=f"ip proto UDP and ip src host {src_ip} and src port {src_port}",
sniff(filter=f"ip proto 17 and ip src host {src_ip} and src port {src_port}",
iface=interf,
prn=func(new_src_ip, new_src_port, new_dst_ip, new_dst_port))

Expand All @@ -49,7 +49,7 @@ def _sniff_in_from_server(self, src_ip, src_port, dst_ip, interf, interf_mac, ne
self._logger.debug("Created a new sniffer to sniff incoming server packets. Process id: "
f"{os.getpid()}, Parent id: {os.getppid()}")
while True:
sniff(filter=f"ip proto UDP and not ether src {interf_mac} and ip dst host {dst_ip} and"
sniff(filter=f"ip proto 17 and not ether src {interf_mac} and ip dst host {dst_ip} and"
f" ip src host {src_ip} and ((src port {src_port}) or (((ip[6:2] > 0) or "
"(ip[7] > 0)) and (not ip[6] = 64)))",
iface=interf,
Expand All @@ -62,7 +62,7 @@ def _sniff_out_to_server(self, src_ip, dst_port, interf, new_src_ip, new_src_por
self._logger.debug("Created a new sniffer to sniff outgoing server packets. Process id: "
f"{os.getpid()}, Parent id: {os.getppid()}")
while True:
sniff(filter=f"ip proto UDP and ip src host {src_ip} and dst port {dst_port}",
sniff(filter=f"ip proto 17 and ip src host {src_ip} and dst port {dst_port}",
iface=interf,
prn=func(new_src_ip, new_src_port, new_dst_ip, new_dst_port))

Expand Down