A userspace application that filters DHCP floods to protect a DHCP server. It uses the Netfilter userspace packet queuing API.
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Makefile 1.5KB

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  1. # Copyright 2019 Pascal Gloor
  2. #
  3. # Licensed under the Apache License, Version 2.0 (the "License");
  4. # you may not use this file except in compliance with the License.
  5. # You may obtain a copy of the License at
  6. #
  7. # http://www.apache.org/licenses/LICENSE-2.0
  8. #
  9. # Unless required by applicable law or agreed to in writing, software
  10. # distributed under the License is distributed on an "AS IS" BASIS,
  11. # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12. # See the License for the specific language governing permissions and
  13. # limitations under the License.
  14. CC := gcc
  15. CCFLAGS := -Wall -O2
  16. LDFLAGS := -lnetfilter_queue
  17. TARGETS:= dhcp_protect
  18. MAINS := $(dhcp_protect .o, $(TARGETS) )
  19. OBJ := dhcp_protect.o $(MAINS)
  20. DEPS := dhcp_protect.h
  21. .PHONY: all clean install uninstall
  22. help:
  23. @echo "make <all|clean|install|uninstall>"
  24. all: $(TARGETS)
  25. clean:
  26. rm -f $(TARGETS) $(OBJ)
  27. install:
  28. systemctl stop dhcp_protect
  29. cp dhcp_protect /usr/local/bin/
  30. cp dhcp_protect.conf /usr/local/etc/
  31. cp dhcp_protect.service /etc/systemd/system/
  32. chmod 644 /etc/systemd/system/dhcp_protect.service
  33. systemctl enable dhcp_protect
  34. systemctl start dhcp_protect
  35. uninstall:
  36. systemctl stop dhcp_protect
  37. systemctl disable dhcp_protect
  38. rm -f /usr/local/bin/dhcp_protect
  39. rm -f /usr/local/etc/dhcp_protect.conf
  40. rm -f /etc/systemd/system/dhcp_protect.service
  41. $(OBJ): %.o : %.c $(DEPS)
  42. $(CC) -c -o $@ $< $(CCFLAGS)
  43. $(TARGETS): % : $(filter-out $(MAINS), $(OBJ)) %.o
  44. $(CC) -o $@ $(LIBS) $^ $(CCFLAGS) $(LDFLAGS)