Several types of access links in widespread use for Internet connectivity today have characteristics that affect the operation Internet protocols and services. Low-bandwidth, high latency links patched over telephone lines via modems are one common example. Radio links in wireless networks (such as GSM, IS-95, GPRS and 802.11) are another example. These links often have undesirable characteristics such as high loss, high delay and low reliability. Transport intermediaries have been used to enhance the performance of problematic links in the past (see RFC 3135). This BoF investigates further work in support of transport intermediaries that provide assistance to access links, including (but not exclusively) wireless links, primarily in the areas of security protocol interaction with transport intermediaries and response to changing link conditions. In particular, existing intermediaries used for these purposes interfere with IPSec and may weaken overall end-to-end security - work is therefore necessary to determine how to request, authenticate and authorize the services of intermediaries, and when possible to mitigate the interference of intermediaries in security. This work focuses on support for TCP initially but does not preclude consideration of other transport-layer protocols. The relationship of transport intermediaries to devices constrained by OPES and UNSAF is also critical to the architectural framework. Reading: http://www.ietf.org/internet-drafts/draft-faynberg-intermediary-transpo r t-00 .txt (Note that a revised version of this draft will be available soon.) http://www.ietf.org/internet-drafts/draft-dawkins-trigtran-framework-00 . txt http://www.ietf.org/internet-drafts/draft-dawkins-trigtran-probstmt-01. t xt