11-04-2015
Domain registrars & DNS servers
I have read many tutorials on bind and i understand the A,MX, CNAME records.
Internally, on a LAN we can install bind and create all these records and we can tell all PC and servers to use this bind as DNS server.that's fine.
On the Internet, when we have purchased a valid domain like somedomain.com, from a domain registrar, we are given the choice on which name servers we want the domain to be hosted.
am a bit confused here about this process.what's the name of the server that says for domain somedomain.com use these nameservers. ?
if this would not be the case, then anyone could just install bind on a public server and put whatever records they want for the domain somedomain.com
please clarify this for me.
Last edited by coolatt; 11-04-2015 at 02:25 PM..
Reason: formatting
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LEARN ABOUT OPENSOLARIS
bind
bind(3SOCKET) Sockets Library Functions bind(3SOCKET)
NAME
bind - bind a name to a socket
SYNOPSIS
cc [ flag ... ] file ... -lsocket -lnsl [ library ... ]
#include <sys/types.h>
#include <sys/socket.h>
int bind(int s, const struct sockaddr *name, int namelen);
DESCRIPTION
The bind() function assigns a name to an unnamed socket. When a socket is created with socket(3SOCKET), it exists in a name space (address
family) but has no name assigned. The bind() function requests that the name pointed to by name be assigned to the socket.
RETURN VALUES
Upon successful completion 0 is returned. Otherwise, -1 is returned and errno is set to indicate the error.
ERRORS
The bind() function will fail if:
EACCES The requested address is protected, and {PRIV_NET_PRIVADDR} is not asserted in the effective set of the current process.
EADDRINUSE The specified address is already in use.
EADDRNOTAVAIL The specified address is not available on the local machine.
EBADF s is not a valid descriptor.
EINVAL namelen is not the size of a valid address for the specified address family.
EINVAL The socket is already bound to an address.
ENOSR There were insufficient STREAMS resources for the operation to complete.
ENOTSOCK s is a descriptor for a file, not a socket.
The following errors are specific to binding names in the UNIX domain:
EACCES Search permission is denied for a component of the path prefix of the pathname in name.
EIO An I/O error occurred while making the directory entry or allocating the inode.
EISDIR A null pathname was specified.
ELOOP Too many symbolic links were encountered in translating the pathname in name.
ENOENT A component of the path prefix of the pathname in name does not exist.
ENOTDIR A component of the path prefix of the pathname in name is not a directory.
EROFS The inode would reside on a read-only file system.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
unlink(2), socket(3SOCKET), attributes(5), privileges(5), socket.h(3HEAD)
NOTES
Binding a name in the UNIX domain creates a socket in the file system that must be deleted by the caller when it is no longer needed by
using unlink(2).
The rules used in name binding vary between communication domains.
SunOS 5.11 20 Feb 2003 bind(3SOCKET)