Technicolor-thomson ST585 V6 Manual de usuario descargar pdf (Pagina 360)

100

101

E-DOC-CTC-20061027-0004 v1.0

Firewall Commands

336

firewall config

Configure the firewall options.

SYNTAX:

where:

firewall config [state = <{disabled | enabled}>]

[keep = <{disabled | enabled}>]

[tcpchecks = <{none | fast | exact}>]

[udpchecks = <{disabled|enabled}>]

[icmpchecks = <{disabled | enabled}>]

[logdefault = <{disabled | enabled}>]

[logthreshold = <{disabled | enabled}>]

[tcpwindow = <number{0-1073725440}>]

state Enable or disable the firewall.

The default is enabled.

OPTIONAL

keep The firewall keeps active connections (enabled) or not

(disabled) when the firewall rules change.

The default is disabled.

OPTIONAL

tcpchecks Select the level of TCP sequence number checks. Choose

between:

> none: no TCP checks are done.

> fast: check all the combinations of flag and disallow all the

possible illegal combinations shown below:

 SYN PSH (SYN PSH URG,...)

 SYN FIN (SYN FIN PSH, SYN FIN RST PSH,...)

 FIN flag set without ACK

 All flags set

 No flags set.

> exact: check and permit only combinations of flag with the

TCP state of a connection:

 SYN: request to open connection

 SYN ACK: agree to open connection

 A, PA, AU, PAU: acknowledgement of receipt

 FA, FAP, FAU, FAP, FAPU, FAU, FPAU: request to close

connection

 R, RA, RP, RU, RPA, RPU, RAU, RPAU: tear down

connection.

The default is none.

OPTIONAL

udpchecks Disable or enable keeping UDP checks.

The default is enabled.

OPTIONAL

icmpchecks Disable or enable keeping ICMP checks.

The default is enabled.

OPTIONAL

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