Yamaha fwx120 Operation Manual page 182

Troubleshooting
Communication charges of the USB data
communication terminal are abnormal
(Continued from the previous page)
Check with the "Generate traffic
history report" screen
In the "Basic configuration page", click "Advanced
settings". In the "Generate traffic history report"
screen, you can check the communication history
for each port.
8
Incoming or outgoing date and time, communication
class, communication time, and disconnect code
are displayed for a maximum of 100 records in the
reverse chronological order. If the communication
class appears as PPxx, it is connected to the
provider (or LAN-to-LAN connection pair).
182  FWX120 Operation Manual
Check with log information
In the "Basic configuration page", click "Advanced
settings". In the "Generate report on syslog of
product" screen, you can check the access log
that triggered auto connection.
If there is a number of unintended accesses, look
for the row "IP Commencing" from the bottom in
the syslog. Use the IP address of the PC or IP
address of the access destination host, access
time (or interval) in the "IP Commencing" row as a
clue, locate the software (or device) that issued the
access request, and identify the cause.
Access example 1
PP[01] IP Commencing : UDP 192.168.
100.1 : 53 > xxx.xxx.xxx.xxx : 53
(DNS Query [windowsmedia.com] from
192.168.100.2)
• PP [01]: Provider No.
• 192.168.100.2: IP address of PC
• xxx.xxx.xxx.xxx: Access destination IP address
In this example, when a PC (192.168.100.2) in the
LAN issues an inquiry for the host (windowsmedia.
com) IP address of the Internet to the DNS server,
auto connection to the provider is triggered.
Access example 2
PP[01] IP Commencing : TCP 192.168.
100.2:1311 > xxx.xxx.xxx.xxx:80
In this example, when a PC (192.168.100.2) in the
LAN issues an access request for the Internet host
(xxx.xxx.xxx.xxx), auto connection to the provider
is triggered.