MYAUTH parameter*   ==  MYAUTH=username:password[:connMap]
                    --  default: none
                    --  restriction: applicable to Socks, VSAP, SMTP, and HTTP

Specify authorization information to be sent to an upstream server/proxy. Special characters in username or password must be escaped with "%XX" where XX is hexadecimal representation of a character code (see ascii(7)). Special characters to be escaped are: TAB ("%09"), SPACE ("%20"), '"' ("%22"), '%' ("%25"), ':' ("%3A"), '{' ("%7B"), and '}' ("%7D").

The pair of username+password which is sent from a client can be forwarded to the server by MYAUTH="%U:%P" (supported in HTTP and FTP only).

NOTE: For authentication with proxies, it is strongly recommended to use FORWARD with a gateway-URL including authentication information instead of MYAUTH. For example, SOCKS=host:port with MYAUTH=user:pass can be represented as FORWARD=socks://user:pass@host:port.

Example:

MYAUTH=userS:passS:socks
MYAUTH=userV:passV:vsap
MYAUTH=userM:passM:smtp:smtpserverM
MYAUTH=userH:passH:http:httpserverH
MYAUTH=userP:passP:http-proxy:httpproxyP