CenturyLink® Modem Configuration

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Connection Status

IPv4 Firewall Activating the firewall is optional. When the firewall is activated, security is enhanced, but some network functionality will be lost.

1. Set the stealth mode state.

Stealth Mode: Disable

2. Select the IP address or IP addressing type to which the firewall rules should apply.

Addressing Type:

3. Select the Firewall Security Level.

Security Level:  
Create Rule

4. Set the firewall table below. Services checked are allowed. (optional)

Service Service Type Service Port Traffic In Traffic Out
DirectX Multimedia Control 2300-2400 TCP, 2300-2400 UDP, 47624 TCP, 6073 UDP
DirecTV STB1 Multimedia Control 27161-27163 TCP
DirecTV STB2 Multimedia Control 27164-27166 TCP
DirecTV STB3 Multimedia Control 27167-27169 TCP
DNS CenturyLink Domain Name Service to/from CenturyLink anycast addresses 205.171.3.65 205.171.2.65 DNS CenturyLink
DNS Domain Name Service 53 UDP
FTP File Transfer 20-21 TCP
FTPS Secure File Transfer 990 TCP
Gmail Mail Service 995 TCP, 465 TCP
H323 Video 1720 TCP
HTTP Web Service 80 TCP
HTTPS Secure Web Service 443 TCP
ICMP Echo Request Internet Control Message Protocol 0 ICMP
ICMP Echo Reply Internet Control Message Protocol 8 ICMP
ICMP TTL Expire Internet Control Message Protocol 11/0 ICMP, 11/1 ICMP
ICMP Trace route Internet Control Message Protocol 30 ICMP
IMAP Mail Service 143 TCP
IMAPS Mail Service 993 TCP
IPP Remote Printing 631 TCP
IPSEC VPN Service 50 TCP, 51-500 UDP
IRC Chat Service 113 TCP, 194 TCP, 1024-1034 TCP, 6661-7000 TCP
L2TP VPN Service 1701 UDP
MSN Gaming Gaming Service 28800-29100 TCP, 28800-29100 UDP
MySQL Database Management 3306 TCP
NNTP Newsgroup 119 TCP
NTP Network Time 123 TCP
Oracle SQL Database Management 66 TCP, 1525 TCP
PC Anywhere Remote Management 66 TCP, 1525 TCP, 5631 TCP, 5631 UDP, 5532 TCP, 5532 UDP
PPTP VPN Service 1723 TCP, GRE
POP3 Mail Service 110 TCP
POP3S Secure Mail Service 995 TCP
PS2 / PS3 Gaming Console 4658 TCP, 4658 UDP, 4659 TCP, 4659 UDP
RIP Routing Information Protocol 520 UDP
REAL A/V Audio/ Video 7070 TCP
Real Server/ Quick Time Audio/ Video 7070 TCP, 6970-7170 UDP
RTP Audio/ Video 16384-16482 TCP
SFTP Secure File Transfer 22 TCP, 115 TCP
SIP Session Control 5060 TCP, 5060 UDP, 5063 TCP, 5063 UDP
SlingBox Media Service 5001 TCP
SMTP Mail Service 25 TCP
SQL Database Management 1433 TCP
SSH Secure Remote Management 22 TCP
T120 Conferencing Service 1503 TCP
Telnet Remote Management 23 TCP
VNC Remote Management 5500 TCP, 5800-5801 TCP, 5900-5901 TCP
Windows Messaging Chat Service 1024-1030 TCP
Windows Service Remote Management 135-139 TCP, 445 TCP, 1434 TCP
XBox Gaming Console 53 TCP, 53 UDP, 88 UDP, 3074 TCP, 3074 UDP
XBox 360 #2 Gaming Console 15980 TCP, 15980 UDP
XBox 360 #3 Gaming Console 24687 TCP, 24687 UDP
XBox 360 Kinect Gaming Console 1863 TCP, 1863 UDP
Yahoo Messenger with Client Directory Chat Service 500-5010 TCP, 5050 TCP, 5100 TCP, 6600-6699 TCP
All Other Ports Open or Close all IP ports not defined in the firewall table. All Undefined Ports

5. Click "Apply" to save your changes.

Apply