If you're running SBS Premium w/ ISA, then you'll need to add a protocol
definition for TCP 8020. The way ISA works, is that it uses protocol
definitions to define protocol (TCP/UDP/ICMP) and port combinations. It
then uses protocol rules that are based on these definitions as well as
other policy elements like schedules, users, etc. to determin who can go
where when. The effective 'allow all traffic' rule we have in ISA on SBS is
somewhat misleading as it only allows all of the protocols that are
currently defined. If a user tries to access a resource on the internet
using a protocol that is not currently defined in ISA (e.g. TCP 8020), then
ISA is going to deny the outbound request. Adding the new protocol
definition and restarting the Microsoft ISA Server Control service should solve the problem
Suliman Abu Kharroub
create a rule to allow port 8020 from internal to that site.
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