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Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide
OL-6392-01
Chapter 5 Managing Security Contexts
Monitoring Security Contexts
Note Beginning with Release 2.3, using the show local host command is not a reliable method for monitoring
the rate of SYN attacks.
The following sample display shows the rate of TCP intercepts for a context called
admin.
FWSM/admin# show perfmon
Context:admin
PERFMON STATS: Current Average
Xlates 0/s 0/s
Connections 0/s 0/s
TCP Conns 0/s 0/s
UDP Conns 0/s 0/s
URL Access 0/s 0/s
URL Server Req 0/s 0/s
WebSns Req 0/s 0/s
TCP Fixup 0/s 0/s
HTTP Fixup 0/s 0/s
FTP Fixup 0/s 0/s
AAA Authen 0/s 0/s
AAA Author 0/s 0/s
AAA Account 0/s 0/s
TCP Intercept 322779/s 322779/s
The following sample display shows the amount of resources being used by TCP intercept for individual
contexts. (Sample text in italics shows the TCP intercept information.)
FWSM(config)# show resource usage detail
Resource Current Peak Limit Denied Context
memory 843732 847288 unlimited 0 admin
chunk:channels 14 15 unlimited 0 admin
chunk:fixup 15 15 unlimited 0 admin
chunk:hole 1 1 unlimited 0 admin
chunk:ip-users 10 10 unlimited 0 admin
chunk:list-elem 21 21 unlimited 0 admin
chunk:list-hdr 3 4 unlimited 0 admin
chunk:route 2 2 unlimited 0 admin
chunk:static 1 1 unlimited 0 admin
tcp-intercept-rate 328787 803610 unlimited 0 admin
np-statics 3 3 unlimited 0 admin
statics 1 1 unlimited 0 admin
ace-rules 1 1 N/A 0 admin
console-access-rul 2 2 N/A 0 admin
fixup-rules 14 15 N/A 0 admin
memory 959872 960000 unlimited 0 c1
chunk:channels 15 16 unlimited 0 c1
chunk:dbgtrace 1 1 unlimited 0 c1
chunk:fixup 15 15 unlimited 0 c1
chunk:global 1 1 unlimited 0 c1
chunk:hole 2 2 unlimited 0 c1
chunk:ip-users 10 10 unlimited 0 c1
chunk:udp-ctrl-blk 1 1 unlimited 0 c1
chunk:list-elem 24 24 unlimited 0 c1
chunk:list-hdr 5 6 unlimited 0 c1
chunk:nat 1 1 unlimited 0 c1
chunk:route 2 2 unlimited 0 c1
chunk:static 1 1 unlimited 0 c1
tcp-intercept-rate 16056 16254 unlimited 0 c1
globals 1 1 unlimited 0 c1
np-statics 3 3 unlimited 0 c1
statics 1 1 unlimited 0 c1