ipfwadm -I -a accept -P tcp -D 0.0.0.0/0 80 -r 81
is used to redirect all http requests to our proxy. However, the
connection from ppp-client gets refused, though it can directly telnet to
81 port of server, and no matter if i change 81 to another port, the
connection still gets refused. If i remove the rule, everything seems to
work fine, so what is the problem?
Is this a (kernel) bug, or is this my fault?
P.S: I've enabled both SYN-flood protections, could they conflict or
something?