Is there a list of ports blocked by various ISPs?

mh348

Expert Member
Joined
Jun 2, 2006
Messages
4,184
I don't think that the ISP's block ports, the ports are usually blocked on the router and you have to open it from there, just go to port forwarding.
 

xdsluser

Well-Known Member
Joined
Sep 21, 2005
Messages
197
ISP's do block ports, try and access port 445 on a IS customer for instance.
ISP's that block ports usually block the various know problem ports of windows.
Search google for ISP access-lists.
 

xdsluser

Well-Known Member
Joined
Sep 21, 2005
Messages
197
This is some of the ports normally blocked, due to Windows Virus and worms.


access-list 101 deny tcp any any eq 135 log-input
access-list 101 deny tcp any eq 135 any log-input
access-list 101 deny udp any any eq 135 log-input
access-list 101 deny udp any eq 135 any log-input
access-list 101 deny tcp any any range 137 139 log-input
access-list 101 deny tcp any range 137 139 any log-input
access-list 101 deny udp any any range 137 139 log-input
access-list 101 deny udp any range 137 139 any log-input
access-list 101 deny tcp any any eq 445 log-input
access-list 101 deny tcp any eq 445 any log-input
access-list 101 deny udp any any eq 445 log-input
access-list 101 deny udp any eq 445 any log-input
access-list 101 deny tcp any any eq 593 log-input
access-list 101 deny tcp any eq 593 any log-input
access-list 101 deny tcp any any eq 707 log-input
access-list 101 deny tcp any eq 707 any log-input
access-list 101 deny tcp any any eq 4444 log-input
access-list 101 deny tcp any eq 4444 any log-input
 
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