ZyXEL Communications ZYWALL 35 - V4.04 Guía de usuario descargar pdf (Pagina 6)

(5) It is blocked by content filter.

5. There is a forward log of the blocked web site.

Condition:

(1) Register Content Filter service.

(2) Enable Content Filter and Enable External Database Content Filtering.

Block “Email” category.

(3) Log “Forward Web Sites”, “Blocked Web Sites”, “Blocked Java etc.” in

“Log Settings”.

(4) Visit http://www.email.com

which is in Email category in LAN PC, the web

site will be blocked and there is a blocked log of it. But there is another

forward log of this blocked web site too.

(5) This problem is existed in 4.01 Patch 2 C0 too.

6. http://info.zyxel.com.tw

was recognised as “google”.

Condition:

(1) Input “google” in Keyword Blocking of Customization.

(2) Visit http://info.zyxel.com.tw in LAN PC. The web site is opened

successfully. But there is a Keyword Blocking log say “info.zyxel.com.tw:

Keyword blocking” (see attached file).

(3) Visit other web site is normal.

(4) This problem is also existed in 4.01 Patch 2 C0 too.

7. Keyword blocking has functioned even if “Web site customization” was disabled.

Condition:

(1) Enable Content Filter.

(2) Add google into Customization>>Keyword Blocking. Keep “Web site

customization” was disabled.

(3) PC in LAN visit www.google.com

will be blocked there are blocked log

(see attached picture).

(4) This problem does NOT exist in “Forbidden Web Site List”.

This problem is exited in 4.01 Patch 2 C0 too.

[Firewall]

1. Some limitations on Firewall CLI configuration, (1) User can not delete specific

address or custom port entry from a rule. (2) CLI doesn’t support Modify and Move

for rules implemented in eWC. (3) eWC can not display firewall rule field correctly if

rule is added by CI command and its type is port/address range.

2. Ping of Death Log has some fault when argument in CI “ip icmp death” bigger than

1500.

Conditions:

(1) Type CI “ip icmp death 1000” or “ip icmp death 1500”.

(2) PC1 ping PC2 with DOS command “ping 172.25.21.254 –l 1600”, the

log is shown as: “

ping of death. ICMP(Echo)”.

(3) Type CI “ip icmp death 1501” or other number bigger than 1500.

(4) PC1 ping PC2 with DOS command “ping 172.25.21.254 –l 2000”, the

log is shown as: “

ping of death. ICMP(Echo Reply)”. That is to say when

argument in CI “ip icmp death” is bigger than 1500, the log is different.

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