To protect our customers from cyber attacks, we network block inbound traffic (TCP/UDP) associated with the following ports. If you have an onsite email server (business email server), NAS servers, Web server or remote admin access to router, then network port filtering may impact you. To resolve this, simply log onto My Slingshot and select ‘Settings’ from the right hand menu, then select ‘Off’ under Port filtering.
Network port filtering does not affect Wireless Broadband connections.
Note: Network port filtering will not impact your normal internet browsing, video streaming, gaming or email services.
Port
|
Inbound traffic
|
0
|
|
20
|
FTP data
|
21
|
FTP data
|
22
|
SSH (Secure Shell), File transfers
|
23
|
Telnet
|
25
|
SMTP (email sending)
|
53
|
DNS server
|
67
|
Bootstrap server, DHCP
|
68
|
Bootstrap client, DHCP
|
80
|
HTTP server
|
110
|
POP3 server
|
135
|
remote manage DHCP, DNS server
|
137
|
NetBIOS name service
|
138
|
NetBIOS Datagram
|
139
|
NetBIOS Session
|
143
|
IMAP server
|
161
|
SNMP
|
162
|
SNMP
|
443
|
HTTPS server
|
547
|
DHCPv6 server
|
593
|
HTTP RPC remote procedure
|
2049
|
NFS
|
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