OID value: 1.3.6.1.2.1.6.13.1.4
OID description:
tcpConnRemAddress OBJECT-TYPE SYNTAX IpAddress ACCESS read-only STATUS mandatory DESCRIPTION "The remote IP address for this TCP connection." ::= { tcpConnEntry 4 }
See also the OID Repository website reference for 1.3.6.1.2.1.6.13.1.4