More Connection Establishment

• Socket: BSD term to denote an IP address + a port number.

  • A connection is fully specified by a socket pair i.e. the source IP address, source port, destination IP address, destination port.

• Initial Sequence Number (ISN): counter maintained in OS.

  • BSD increments it by 64000 every 500ms or new connection setup => time to wrap around < 9.5 hours.

Previous slide

Next slide

Back to first slide

View graphic version