topic nddconf strange modifications in Operating System - HP-UX https://community.hpe.com/t5/operating-system-hp-ux/nddconf-strange-modifications/m-p/3793750#M265433 Hi.<BR /><BR />I have HP-UX v 11i running on rp7420. In order for the Java applications to work correctly we set an ephemeral port range. We do it using the settings in the /etc/rc.config.d/nddconf file. But strange things happen. After I had edited the file the contents were as the following:<BR /><BR />TRANSPORT_NAME[0]=tcp<BR />NDD_NAME[0]=tcp_largest_anon_port<BR />NDD_VALUE[0]=50000<BR /><BR />TRANSPORT_NAME[1]=tcp<BR />NDD_NAME[1]=tcp_smallest_anon_port<BR />NDD_VALUE[1]=49152<BR /><BR />TRANSPORT_NAME[2]=udp<BR />NDD_NAME[2]=udp_largest_anon_port<BR />NDD_VALUE[2]=50000<BR /><BR />TRANSPORT_NAME[3]=udp<BR />NDD_NAME[3]=udp_smallest_anon_port<BR />NDD_VALUE[3]=49152<BR /><BR />...but after I had reboot the server my emphemeral port range got shifted and I found that my nddconf file got modified by unknown process. This happens every time I reboot the machine. After the reboot the file looks as the following:<BR /><BR />TRANSPORT_NAME[0]=tcp<BR />NDD_NAME[0]=tcp_largest_anon_port<BR />NDD_VALUE[0]=49152<BR /><BR />TRANSPORT_NAME[1]=tcp<BR />NDD_NAME[1]=tcp_smallest_anon_port<BR />NDD_VALUE[1]=50000<BR /><BR />TRANSPORT_NAME[2]=udp<BR />NDD_NAME[2]=udp_largest_anon_port<BR />NDD_VALUE[2]=49152<BR /><BR />TRANSPORT_NAME[3]=udp<BR />NDD_NAME[3]=udp_smallest_anon_port<BR />NDD_VALUE[3]=50000<BR /><BR />Somehow _smallest and _largest ports are getting swapped.<BR /><BR />Why this happens? Is there any way to avoid this? Of course, I set these ports manually then by ndd commands but this is not the way out, I need to make the system reboot correctly with the necessary port range read from this file. Wed, 24 May 2006 03:11:40 GMT Victor Makukha 2006-05-24T03:11:40Z nddconf strange modifications https://community.hpe.com/t5/operating-system-hp-ux/nddconf-strange-modifications/m-p/3793750#M265433 Hi.<BR /><BR />I have HP-UX v 11i running on rp7420. In order for the Java applications to work correctly we set an ephemeral port range. We do it using the settings in the /etc/rc.config.d/nddconf file. But strange things happen. After I had edited the file the contents were as the following:<BR /><BR />TRANSPORT_NAME[0]=tcp<BR />NDD_NAME[0]=tcp_largest_anon_port<BR />NDD_VALUE[0]=50000<BR /><BR />TRANSPORT_NAME[1]=tcp<BR />NDD_NAME[1]=tcp_smallest_anon_port<BR />NDD_VALUE[1]=49152<BR /><BR />TRANSPORT_NAME[2]=udp<BR />NDD_NAME[2]=udp_largest_anon_port<BR />NDD_VALUE[2]=50000<BR /><BR />TRANSPORT_NAME[3]=udp<BR />NDD_NAME[3]=udp_smallest_anon_port<BR />NDD_VALUE[3]=49152<BR /><BR />...but after I had reboot the server my emphemeral port range got shifted and I found that my nddconf file got modified by unknown process. This happens every time I reboot the machine. After the reboot the file looks as the following:<BR /><BR />TRANSPORT_NAME[0]=tcp<BR />NDD_NAME[0]=tcp_largest_anon_port<BR />NDD_VALUE[0]=49152<BR /><BR />TRANSPORT_NAME[1]=tcp<BR />NDD_NAME[1]=tcp_smallest_anon_port<BR />NDD_VALUE[1]=50000<BR /><BR />TRANSPORT_NAME[2]=udp<BR />NDD_NAME[2]=udp_largest_anon_port<BR />NDD_VALUE[2]=49152<BR /><BR />TRANSPORT_NAME[3]=udp<BR />NDD_NAME[3]=udp_smallest_anon_port<BR />NDD_VALUE[3]=50000<BR /><BR />Somehow _smallest and _largest ports are getting swapped.<BR /><BR />Why this happens? Is there any way to avoid this? Of course, I set these ports manually then by ndd commands but this is not the way out, I need to make the system reboot correctly with the necessary port range read from this file. Wed, 24 May 2006 03:11:40 GMT https://community.hpe.com/t5/operating-system-hp-ux/nddconf-strange-modifications/m-p/3793750#M265433 Victor Makukha 2006-05-24T03:11:40Z Re: nddconf strange modifications https://community.hpe.com/t5/operating-system-hp-ux/nddconf-strange-modifications/m-p/3793751#M265434 Hi Voctor,<BR /><BR />Hope this helps you, to solve your problem<BR /><BR /><A href="ftp://ftp.cup.hp.com/dist/networking/briefs/annotated_ndd.txt" target="_blank">ftp://ftp.cup.hp.com/dist/networking/briefs/annotated_ndd.txt</A><BR /><BR />Chan Wed, 24 May 2006 03:20:14 GMT https://community.hpe.com/t5/operating-system-hp-ux/nddconf-strange-modifications/m-p/3793751#M265434 Chan 007 2006-05-24T03:20:14Z Re: nddconf strange modifications https://community.hpe.com/t5/operating-system-hp-ux/nddconf-strange-modifications/m-p/3793752#M265435 Thanks,<BR /><BR />There is a lot of useful info, but I still could not find why they TCP/UDP largest and smallest could get swapped...<BR /><BR />Regards. Thu, 25 May 2006 01:59:53 GMT https://community.hpe.com/t5/operating-system-hp-ux/nddconf-strange-modifications/m-p/3793752#M265435 Victor Makukha 2006-05-25T01:59:53Z