Chapter 43 Access Control
GS2210 Series User’s Guide
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43.7.2 SSH Overview
Unlike Telnet or FTP, w hich t ransm it dat a in clear t ext , SSH ( Secur e Shell) is a secur e
com m unicat ion pr ot ocol t hat com bines aut hent icat ion and dat a encr ypt ion t o pr ov ide secur e
encr ypt ed com m unicat ion bet w een t w o host s over an unsecur ed net w or k.
Figure 264
SSH Com m unicat ion Ex am ple
43.7.2.1 How SSH works
The follow ing t able sum m ar izes how a secur e connect ion is est ablished bet w een t w o r em ot e host s.
Table 193
SNMP Swit ch Tr aps
OPTION
OBJECT LABEL
OBJECT ID
DESCRIPTION
st p
STPNew Root
1.3.6.1.2.1.17.0.1
This t rap is sent w hen t he STP r oot sw it ch changes.
zy Mr st pNew Root
1.3.6.1.4.1.890.1.15
.3.52.3.1
This t rap is sent w hen t he MRSTP r oot sw it ch
changes.
zy Mst pNew Root
1.3.6.1.4.1.890.1.15
.3.53.3.1
This t rap is sent w hen t he MSTP r oot sw it ch changes.
STPTopology Change
1.3.6.1.2.1.17.0.2
This t rap is sent w hen t he STP t opology changes.
zy Mr st pTopology Change
1.3.6.1.4.1.890.1.15
.3.52.3.2
This t rap is sent w hen t he MRSTP t opology changes.
zy Mst pTopology Change
1.3.6.1.4.1.890.1.15
.3.53.3.2
This t rap is sent w hen t he MSTP r oot sw it ch changes.
m act able
zy MacFor war dingTableFull
1.3.6.1.4.1.890.1.15
.3.48.2.1
This t rap is sent w hen m or e t han 99% of t he MAC
t able is used.
zy MacFor war dingTableFullReco
ver ed
1.3.6.1.4.1.890.1.15
.3.48.2.2
This t rap is sent w hen t he MAC addr ess sw it ching
t able has becom e nor m al from full.
r m on
Rm onRisingAlar m
1.3.6.1.2.1.16.0.1
This t rap is sent w hen a var iable goes over t he RMON
" r ising" t hr eshold.
Rm onFallingAlarm
1.3.6.1.2.1.16.0.2
This t rap is sent w hen t he var iable falls below t he
RMON " falling" t hr eshold.
cfm
dot 1agCfm Fault Alar m
1.3.111.2.802.1.1.8.
0.1
The t rap is sent w hen t he Sw it ch det ect s a
connect ivit y fault .
classifier
zy AclV2Classifier LogNot ificat io
n
1.3.6.1.4.1.890.1.15
.3.105.4.1
This t rap is sent w hen t he Sw it ch det ect s classifier log
infor m at ion.
