Cisco 3845 of storm-control
Hello
First of all, sorry for my English. I was attacked in one of my public ip address. I was wondering how to solve this problem, I found when I was attacked, and numer of pps in my interface goes up to 800 kpps. I was looking for an I found the function 'control of the storm '. I have a Cisco 3845, can you tell me what I can do to avoid attacks.
Hello
So I suggest that you attached a fw between your router and the internet or apply an IOS security.
Basic stuff to assign:
No finger service
no service button
no service udp-small-servers
no service tcp-small-servers
horodateurs service debug datetime localtime show-timezone msec
Log service timestamps datetime localtime show-timezone msec
encryption password service
tcp KeepAlive-component snap-in service
a tcp-KeepAlive-quick service
not run cdp
no ip bootp Server
no ip address of the http server
no ip finger
no ip source route
no ip free-arps
block connection-for 10 tries 2-5
all the ints FastEthernet/concert
-------------------------
no ip redirection
no ip proxy-arp
no ip unreachable
no ip directed broadcast to the
no response to mask ip
No mop enabled
all serial interfaces
-------------------------
no ip redirection
no ip proxy-arp
no ip unreachable
no ip directed broadcast to the
no response to mask ip
and then maybe use a simple CBAC inspection
----------------------------------------------------------------
R1
inspect the TCP IP ios_fw name
inspect the name ios_fw UDP IP
inspect the name ios_fw ICMP IP
allowed access list 100 deny ip any one
int fax / x (interface WAN face)
inspect the ios_fw over IP
IP access-group 100 to
RES
Paul
Tags: Cisco Network
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!
interface Te1/0/24
Description "2 Port EtherChannel link Cisco 3600"
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Storm-control broadcasts 60
switchport mode trunk
switchport trunk allowed vlan 1-4
dvlan-tunnel mode
output
!
interface Te2/0/24
Description "2 Port EtherChannel link Cisco 3600"
active in mode channel-group 24
Storm-control broadcasts 60
switchport mode trunk
switchport trunk allowed vlan 1-4
dvlan-tunnel mode
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http://www.Cisco.com/en/us/docs/wireless/controller/5.2/configuration/guide/c52wlan.html#wp1128591
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Hello
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Cisco import CLI
Cisco import cli
import sys
import datetime
time of import
import re
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Ethernet1/1"."
'Ethernet1/2']
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CLI ("shutdown")
But the python script is a bit complecs because it is located and must find some interfece triggered the newspaper.
Is it possible to use event parameters? And how?
I know that they are:
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32 09/30/2013 15:40:51 storm_control active (1) shut-storm
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Scenario:
Workstation (behind the phone)
8.5 (2) software IP Phone 7911
ACS 4.1 with AD on the same server
Cisco switch WS-C3750E-24PD with c3750e-universalk9 - mz.122 - 53.SE1.bin
Guide used:
http://www.Cisco.com/en/us/Tech/tk389/tk814/technologies_configuration_example09186a00808abf2d.shtml
To accomplish:
Computer and authentication of the IP phone with 802. 1 x. The phone using EAP - MD5 and the workstation with PEAP-MSCHAP version 2.
Tried and worked:
Workstation using EAP - MD5 (with ACS username) and use PEAP (with AD user name) and it also acceded to the vlan correct according to the username.
The journal of the ACS, authentication failed:
Message-Type-name of user - Group-Name-Caller ID - network access profile name - Code failure-authentic -.
Authentic has no EAP type - CP 7911 G-SEP00254594D6BA--00-25-45-94-D6-BA VOZ - (default) - not configured
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Group AAA dot1x default authentication RADIUS
Group AAA authorization network default RADIUS
RADIUS-server host 10.32.250.250 auth-port 1645 acct-port 1646 borders 7 095F4B07110445425B54
interface GigabitEthernet1/0/3
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switchport nonegotiate
switchport voice vlan 200
multi-domain of host-mode authentication
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periodic authentication
MLS qos trust device cisco-phone
MLS qos based on vlan
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dot1x quiet-time 20
dot1x timeout server-timeout 100
dot1x tx-delay 100
broadcast storm control 15.00
multicast storm-control level 10.00
spanning tree portfast
spanning tree guard root
Summary of ACS Configuration:
Configured the AAA
2 group - voice and data, each with their VLAN respective and the ACS configuration parameters (attribute / value (AV))
Added the user name and password for IP phones
Mapped the announcement to the DataSet
A certificate and installed in the workstation
Set up the configuration of global authentication, where I ticked the boxes PEAP and EAP - MD5
So, as I said, it only authenticates the workstation w / IP phone. When I add the IP phone it does not authenticate any of them.
Someone at - it one day?
Hello
First of all, you can try a different sw for phone (for example 8.4.2S). I have a similar problem with the 8.5 software and phones 7945/7965. Secondary, you must attribute av-pair confiigure side ACS for the correct placement of the voice phone to vlan.
Concerning
Stanislav
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Subject of the vlan voice SRW224G4P
Hello
I have configured the SRW as vlan, use vlan for voice 212, 348 for data and communicate with cisco IP Phone.
database of VLAN
VLAN, 210-216 345-348
output
ID of the vlan voice 212!
!
interface fastethernet1
activate the storm control
Storm-control broadcast level 10
Storm-control include multicast
maximum port security by 10 points
port security mode max-addresses
port security throw trap 60
spanning tree portfast
switchport trunk allowed vlan add 212
switchport trunk vlan native 348
macro description ip_phone_desktop
! next order is internal.
macro auto smartport dynamic_type ip_phone_desktop
!but when I show vlan voice,.
It shows:
=====================================
1ASW01 #show voice vlan
Manage the VLAN voice State is automatically triggered
Operational status of VoIP VLAN is enabled in auto
Best Local Voice VLAN ID is 212
Best Local VPT is 5 (default)
Best Local DSCP is (by default) 46
Concerted VLAN voice is received from the 34:62:88:73:05:c9 switch
Concerted VLAN voice priority is 0 (static source active)
Concerted Voice VLAN ID is 216
Agreed VPT is 5
Agreed DSCP is 46
Voice VLAN agreed last change is 3 May 13 05:06:31=====================================
I don't know why the vlan 216 became the vlan voice?
I tried changed the build-in macro settings,
auto macro of the built-in parameters ip_phone $native_vlan 348
auto macro of the built-in parameters ip_phone_desktop $native_vlan 348but the system could not change the value of $voice_vlan.
How to fix?
Hi Skywings,
So I think the above output is after the change, right? If this is true, it seems that something was wrong during the configuration process. Process of VLAN automatic voice has two main phases where one is related to communication between the switches and other Cisco infrastructure devices and synchronization of voice VLAN ID. The second phase is related to the identification of the end device as phone. What I see in your case that the first phase has failed somehow the voice VLAN ID is different from locally configured. Can you share with me your race and also start-up config more CDP neighbors? You can use private message.
Kind regards
Aleksandra
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