Cisco PIX 525 Specifikace stáhnout pdf (Strana 351)

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Cisco PIX Firewall and VPN Configuration Guide

78-15033-01

Chapter 9 Accessing and Monitoring PIX Firewall

Using SNMP

Viewing The Connection Count

You can view the number of connections in use from the cfwConnectionStatTable in the Cisco Firewall

MIB. From the PIX

Firewall command line, you can view the connection count with the show conn

command. The following is sample output from the show conn command to demonstrate where the

information in cfwConnectionStatTable originates.

pix(config)# show conn

15 in use, 88 most used

The cfwConnectionStatTable object table can be accessed from the following path:

.iso.org.dod.internet.private.enterprises.cisco.ciscoMgmt.ciscoFirewallMIB.

ciscoFirewallMIBObjects.cfwSystem.cfwStatistics.cfwConnectionStatTable

Table 9-12 lists which objects provide connection count information.

Ta b l e 9-12 Connection Count Objects

Object Object Type Row 1: Returned Value Row 2: Returned Value

cfwConnectionStatService

(Table index)

Services 40 (IP protocol) 40 (IP protocol)

cfwConnectionStatType

(Table index)

ConnectionStat 6 (Current connections in

use)

7 (High)

cfwConnectionStatDescription SnmpAdminString number of connections

currently in use by the entire

firewall

highest number of

connections in use at any one

time since system startup

cfwConnectionStatCount Counter32 0 (Not used) 0 (Not used)

cfwConnectionStatValue Gauge32 integer (In use number) integer (Most used number)

In the HP OpenView Browse MIB application’s “MIB values” window, a sample MIB query yields the

following information:

cfwConnectionStatDescription.40.6 :number of connections currently in use by the entire firewall

cfwConnectionStatDescription.40.7 :highest number of connections in use at any one time since system startup

cfwConnectionStatCount.40.6 :0

cfwConnectionStatCount.40.7 :0

cfwConnectionStatValue.40.6 :15

cfwConnectionStatValue.40.7 :88

From this listing, the table index, cfwConnectionStatService, appears as the .40 appended to each

subsequent object and the table index, cfwConnectionStatType, appears as either .6 to indicate the

number of connections in use or .7 to indicate the most used number of connections. The

cfwConnectionStatValue object then lists the connection count. The cfwConnectionStatCount object

always returns 0 (zero).

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