Fixed
Created: Feb 7, 2017
Updated: Dec 3, 2018
Resolved Date: Feb 8, 2017
Previous ID: LIN5-22422
Found In Version: 9.0.0.3
Fix Version: 9.0.0.3
Severity: Standard
Applicable for: Wind River Linux 9
Component/s: Userspace
Steps to reproduce:
1) setup with:
--machines=intel-x86-64 --kernel=standard --dl-layers
2) . ./environment-setup-x86_64-wrlinuxsdk-linux
3) . ./oe-init-build-env build_test
4) build
bitbake wrlinux-image-glibc-std
5) start the target and check the netstat output:
netstat -ulpn | fgrep dhcp
When configuring dhcpd service we see additional port that is open, which is not really needed.
It may cause security issues under unknown circumstances, especially that it was fixed by the community in later version of ISC DHCP.
The additional opened port is probably related to DDNS which is not needed and not configured in the dhcpd.conf.
See this for refercence:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=712503
1. configure a wrlinux 5 project based on
--enable-board=intel-xeon-core --enable-build=production --enable-kernel=cgl --enable-rootfs=glibc_cgl --enable-jobs=88 --enable-parallel-pkgbuilds=88 --enable-reconfig --with-layer=wr-dpdk,rcfl --with-template=feature/openssl101e,feature/dpdk-1.7 --enable-bootimage=, --without-layer=, --without-template=wr-cgp/cgp/templates/feature/cgp-full/template.conf,wr-cgp/cgp/templates/feature/cgp-full/image.inc,wr-dpdk/templates/default/template.conf,wr-dpdk/templates/default/image.inc --enable-doc-pages=target --enable-addons=wr-rcfl --with-rcpl-version=0038
2. build & boot
3. check the netstat output
netstat -ulpn | fgrep dhc
