Browsing articles tagged with "ios - 8/8 - Admins Goodies"
Aug 10, 2011
tom

Cisco 1800 series router simulation program

I need to know how to program these routers for school, but I need to exercise at home. Are there simulators for the console interface, for learning purposes? I took a look at eBay to get one, but they were quire out-of-budget ;-). Thank you for your help! Yvan I highly recommend the GNS3 (graphical network simulation) tool. http://www.gns3.net It’s a collection of several applications that each do their own part to make things work. […]

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Aug 10, 2011
tom

cisco 870 assign IP

I’ll try to be “short.” I’ve successfully enabled http server option on my Cisco 870, now I need to reach it and use the web based configuration. I haven’t found how to assign an IP to the router itself. How can I do this? You can assign an IP address either to a physical (Ethernet) interface or to a VLAN including one or more of them; the default configuration has all interfaces sitting on VLAN […]

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Aug 9, 2011
tom

Cisco IOS XR version clarification

I’ve run across this cisco advisory It says: This bug was introduced in Cisco IOS XR Software release 3.6.2 and is fixed with SMU hfr-k9sec-3.6.2.CSCtd74795. The SMU ID for this fix in 3.6.2 is AA03656. This vulnerability has been fixed in 3.8.3, 3.9.1, and 4.0.0 for customers running later software versions. Software version 3.7 is not affected by this vulnerability. I’m trying to figure out something, according to this, 3.6.2 is vulnerable unless fixed with […]

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Aug 9, 2011
tom

WebDAV for accessing fileserver for iOS apps

With the sudden onslaught of iOS apps that can use WebDAV for syncing, along with the fact that we are not happy with our user’s data being stored in North Carolina (evil IT overlord strikes again) we are looking for a WebDAV solution for iPads & iPhones. We need: Authentication against LDAP (preferred), RADIUS or Samba WebDAVing mounting (for want of a better term) of the users home folder on the fileserver, or perhaps a […]

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Aug 9, 2011
tom

How to disable ICMP redirect packets in Cisco IOS?

I’m studying a “good practices” document for Cisco IOS, and one of its controls tells me to disable ICMP Redirect packets in the router. Sounds reasonable. So I go test it in Cisco Packet Tracker (a nifty little network emulator program). In my virtual router’s IOS CLI, I type the following: jcios01#config term Enter configuration commands, one per line. End with CNTL/Z. jcios01(config)#interface GigabitEthernet9/0 jcios01(config-if)#no ip mask-reply ^ % Invalid input detected at ‘^’ marker. […]

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Aug 9, 2011
tom

Output Drops on Cisco Switch — Counter?

I was always under the impression that the Total output drops was a counter that goes up until it resets (or maybe wraps around 4 billion). However, this seems to indicate otherwise, or something is just messed up: ny-swstack01#show int GigabitEthernet2/0/25 | inc Total output drops Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 14456 ny-swstack01#show int GigabitEthernet2/0/25 | inc Total output drops Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 3614 ny-swstack01#show int GigabitEthernet2/0/25 | inc […]

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Aug 9, 2011
tom

Cisco ACL Not Applying

This is probably something extreamly simple but I am executing the following code to block usage of port 80 on ip 192.168.1.50 and it does not seem to be working. The interface is right and I am using a Cisco Router 2820. Here is the code I used: (config) access-list 101 deny tcp any host 192.168.1.50 eq 80 (config) access-list 101 permit ip any any (config-if) ip access-group 101 in (config-if) ip access-group 101 out […]

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Aug 9, 2011
tom

How to obtain Cisco IOS firmware?

Quick and simple question, but I’ve not been able to find an answer around. I have a Cisco ADSL router (model 877). I don’t have any Cisco support contract. How can I obtain an updated firmware for it? I know which firmware I want, and it’s a minor update from my current one (15.0 -> 15.1) with the same feature set; so I should be entitled to have it. And yet, Cisco doesn’t let me […]

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Aug 9, 2011
tom

Can somebody please explain IOS line authentication?

I’m trying to understand a config on one of our Cisco routers (teaching myself iOS) and have run into a problem with one line. Can somebody please explain the “line enable” piece of the command below and check the rest of my information to ensure it is correct? aaa authentication login default group tacacs+ local line enable — # Creates an authentication list that specifies the types of authentication methods allowed.# aaa authentication login = […]

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