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 getipsecprotobyname 3NSL "13 Aug 2003" "SunOS 5.11" "Networking Services Library Functions"
 NAME
getipsecprotobyname, getipsecprotobynum - query IPsec protocols entries

 SYNOPSIS


cc -flag .\|.\|. file .\|.\|.-lnsl [ -library .\|.\|. ] 
#include <netdb.h>



int getipsecprotobyname(const char *proto_name






char *getipsecprotobynum(int proto_nump




 DESCRIPTION

Use the getipsecprotobyname() and getipsecprotobynum() functions to
obtain the IPsec algorithm mappings that are defined by ipsecalgs(1M).
You can also use the getipsecprotobyname() and getipsecprotobynum()
functions in conjunction with getipsecalgbyname(3NSL) and
getipsecalgbynum(3NSL) to obtain information about the supported IPsec
algorithms. The IPsec algorithms and associated protocol name spaces are
defined by RFC 2407.


getipsecprotobyname() takes as an argument the name of an IPsec protocol
and returns its assigned protocol number. The character string returned by the
getipsecprotobyname() function must be freed by the called when it is no
longer needed.


getipsecprotobynum() takes as an argument a protocol number and returns
the corresponding protocol name.


The following protocol numbers are pre-defined:


IPSEC_PROTO_ESP


Defines the encryption algorithms (transforms) that can be used by IPsec to
provide data confidentiality.





IPSEC_PROTO_AH


Defines the authentication algorithms (transforms) that can be used by IPsec to
provide authentication.




 PARAMETERS

proto_name


A pointer to the name of an IPsec protocol.





proto_num


A pointer to a protocol number. conditions.




 RETURN VALUES

The getipsecprotobyname() function returns a protocol number upon
success, or -1 if the protocol specified does not exist.


 The getipsecprotobynum() function returns a protocol name upon success,
or the NULL value if the protocol number specified does not exist.

 ATTRIBUTES

See attributes(5) for descriptions of the following attributes:







ATTRIBUTE TYPEATTRIBUTE VALUE
MT LevelMT Safe
Interface StabilityEvolving



 SEE ALSO

ipsecalgs(1M), getipsecalgbyname(3NSL),
getipsecalgbyname(3NSL), attributes(5)


Piper, D. RFC 2407, The Internet IP Security Domain of Interpretation for
ISAKMP. Network Working Group. November, 1998.