Giúp mình với router của mình sao ko có ip tcp intercept

[kumamuka]

Router(config)#ip tcp ?
async-mobility Configure async-mobility
chunk-size TCP chunk size
ecn Enable Explicit Congestion Notification
mss TCP initial maximum segment size
path-mtu-discovery Enable path-MTU discovery on new TCP connections
queuemax Maximum queue of outgoing TCP packets
selective-ack Enable TCP selective-ACK
synwait-time Set time to wait on new TCP connections
timestamp Enable TCP timestamp option
window-size TCP window size

Router(config)#ip tcp

router của mình là cisco 1841 ios 12.3(14)T7

các anh chị biết bật cái intercept chổ nào chỉ mình với nha!

thank!

[kumamuka]

mình show version thì thấy như vầy

Router#show version
Cisco IOS Software, 1841 Software (C1841-ADVSECURITYK9-M), Version 12.3(14)T7, R
ELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Wed 22-Mar-06 16:41 by pwade

ROM: System Bootstrap, Version 12.4(13r)T5, RELEASE SOFTWARE (fc1)

Router uptime is 2 hours, 2 minutes
System returned to ROM by power-on
System image file is "flash:c1841-advsecurityk9-mz.123-14.T7.bin"

[ducnhan]

Cái này có vẻ khó đấy nhỉ?

[them huyen]

Khong co gi la kho ca. You will need the "advanced ip services".

nwrgr01c18#sh ver | in ima
System image file is "flash:c1841-advipservicesk9-mz.124-20.T2.bin"

nwrgr01c18(config)#ip tcp ?
RST-count Configure RST throttle count
async-mobility Configure async-mobility
chunk-size TCP chunk size
ecn Enable Explicit Congestion Notification
intercept Enable TCP intercepting >>>>>>>>>>>
mss TCP initial maximum segment size
path-mtu-discovery Enable path-MTU discovery on new TCP connections
queuemax Maximum queue of outgoing TCP packets
selective-ack Enable TCP selective-ACK
synwait-time Set time to wait on new TCP connections
timestamp Enable TCP timestamp option
window-size TCP window size