Hiding NS Records
Brad Knowles
brad.knowles at skynet.be
Fri Mar 16 16:50:21 UTC 2001
At 11:37 AM -0500 3/16/01, Smith, William E. (Bill), Jr. wrote:
> We are running a secondary name server(for testing purposes) whose NS record
> we want to hide from the outside world. It's behind a firewall so queries
> against it won't get a response; however, we would just like to have the NS
> record for that server removed altogether. Is it possible to do this? If
> so, what is the syntax. I've done some searching and haven't come across
> anything...obvious at least to address this.
Sure, just don't list that machine. It will know that it is
primary for that domain (or set of domains) through the
/etc/named.conf file, and doesn't need to show up in the SOA record
or as one of the advertised NS RRs at all.
No problem.
--
Brad Knowles, <brad.knowles at skynet.be>
/* efdtt.c Author: Charles M. Hannum <root at ihack.net> */
/* */
/* Thanks to Phil Carmody <fatphil at asdf.org> for additional tweaks. */
/* */
/* Length: 434 bytes (excluding unnecessary newlines) */
/* */
/* Usage is: cat title-key scrambled.vob | efdtt >clear.vob */
/* where title-key = "153 2 8 105 225" or other similar 5-byte key */
#define m(i)(x[i]^s[i+84])<<
unsigned char x[5],y,s[2048];main(n){for(read(0,x,5);read(0,s,n=2048);write(1,s
,n))if(s[y=s[13]%8+20]/16%4==1){int i=m(1)17^256+m(0)8,k=m(2)0,j=m(4)17^m(3)9^k
*2-k%8^8,a=0,c=26;for(s[y]-=16;--c;j*=2)a=a*2^i&1,i=i/2^j&1<<24;for(j=127;++j<n
;c=c>y)c+=y=i^i/8^i>>4^i>>12,i=i>>8^y<<17,a^=a>>14,y=a^a*8^a<<6,a=a>>8^y<<9,k=s
[j],k="7Wo~'G_\216"[k&7]+2^"cr3sfw6v;*k+>/n."[k>>4]*2^k*257/8,s[j]=k^(k&k*2&34)
*6^c+~y;}}
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