CastleNet CBV38Z4EN

CastleNet CBV38Z4EN

The CastleNet CBV38Z4EN is a cable router used by SFR (previously Numericable) in France to offer triple play services to domestic users. The modem specifications can be downloaded from the CastleNet website.

Both data and voice services work seamlessly with this device. Good voice quality for local and International calls.

The wifi settings can be easily configured to control the security and the access credentials.

Works well with Windows XP, however IPv6 should be disabled on Windows 7 clients. Works well with Android and iOS.

Beware of the Firewall Features settings on this router, which you can change in ‘WAN Network Configuration’, Services:

Low = no port restrictions

Medium = allows the services below

AIM/ICQ 5190 5190 TCP
DHCPv6 546 547 UDP
DNS TCP 53 53 TCP
DNS UDP 53 53 UDP
FTP-S 989 990 TCP
HTTP 80 80 TCP
HTTP ALT 8080 8080 TCP
HTTP-S 443 443 TCP
IMAP 143 143 TCP
IMAP-S 993 993 TCP
IPSec NAT-T 4500 4500 UDP
NTP 123 123 UDP
POP3 110 110 TCP
POP3-S 995 995 TCP
RADIUS 1812 1812 TCP
RADIUS 1812 1812 UDP
SMTP 25 25 TCP
SSH 22 22 TCP
SMTP-S 465 465 TCP
Steam 1725 1725 UDP
Steam Friends 1200 1200 UDP
Telnet-S 992 992 TCP
XBOX Live 3074 3074 TCP
XBOX Live 3074 3074 UDP
World of Warcraft 3724 3724 TCP
World of Warcraft 3724 3724 UDP
Yahoo Messenger 5050 5050 TCP
Port for stb 8184 8184 TCP
Port for stb 8184 8184 UDP
VoWIFI 500 500 TCP
VoWIFI 500 500 UDP
VoWIFI 4500 4500 TCP
VoWIFI 4500 4500 UDP

High = allows the services below

DNS TCP 53 53 TCP
DNS UDP 53 53 UDP
HTTP 80 80 TCP
HTTP-S 443 443 TCP
IMAP-S 993 993 TCP
IPSec NAT-T 4500 4500 UDP
NTP 123 123 UDP
POP3-S 995 995 TCP
SSH 22 22 TCP
SMTP 25 25 TCP
SMTP-S 465 465 TCP
Port for stb 8184 8184 TCP
Port for Stb 8184 8184 UDP
VoWIFI 500 500 TCP
VoWIFI 500 500 UDP
VoWIFI 4500 4500 TCP
VoWIFI 4500 4500 UDP
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