Canon imageRUNNER ADVANCE C2030 Service Manual page 690

COPIER > OPTION > NETWORK
PFWFTPRT Set of RST reply at IP filter FTP SEND
Lv.1 Details When FTP SEND is executed using an IP filter by which packets from
a specific remote PC are rejected, SYN is returned to the port 113 if
the PC supports authentication of the FTP port 113. However, since
the IP filter blocks the packets, the block logs are increased and the
performance is lowered.
When 1 is set, RST is returned to the port 113 without blocking
packets.
Use case When executing FTP SEND against the OS which supports
authentication of the FTP port 113 while the IP filter is enabled
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Display/adj/set range 0 to 1
0: OFF, 1: ON
Default value 0
PRNIPBLK ON/OFF of IP range setting function
Lv.1 Details To set ON/OFF of IP range setting function (only at reception and print
job).
When 1 is set, the following are displayed in the user mode.
Preferences> Network > TCP/IP Settings > IPv4 Settings > IP
Address Range Settings
Preferences> Network > TCP/IP Settings > IPv6 Settings > IP
Address Range Settings
Use case When using the IP address block function
Adj/set/operate method Enter the setting value, and then press OK key.
Display/adj/set range 0 to 1
0: OFF, 1: ON
Default value 0
Related user mode Preferences> Network > TCP/IP Settings > IPv4 Settings > IP
Address Range Settings
Preferences> Network > TCP/IP Settings > IPv6 Settings > IP
Address Range Settings
8
Service Mode > COPIER > OPTION > NETWORK
8 Service Mode > COPIER > OPTION > NETWORK
COPIER > OPTION > NETWORK
IPMTU Setting of MTU size of network packet
Lv.1 Details To change MTU size of network packet.
Use this item when performing communications between locations
(such as SEND) connected with Ethernet in a field environment where
MTU black hole problem occurs.
Use case When MTU black hole problem occur
Adj/set/operate method Enter the setting value, and then press OK key.
Display/adj/set range 1 to 10
1 to 7: not use, 8: 1300 bytes, 9: 1400 bytes, 10: 1500 bytes
Unit byte
Default value 10
Related user mode MTU: A unit of transmission showing the maximum value of data which
can be sent per 1 transfer (1 frame) in a network.
MTU black hole: A problem which occurs when ICMP packet is being
filtered by firewall, etc. (Since the message does not reach the sender,
the sender is not aware of the packet being lost, which then results in
time-out.).
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