Routing

I use a mail filtering service that delivers mail to me via SMTP on standard port 25 on one of my 5 static external IP's. I wish to restrict this to their IP's only (they have two) and I am unsure on how to do so? As it stands now, anything on the ne...

Honestly, if i say i don't have any knowledge in CISCO IOS. So i have  here a CISCO 877 which i have heard that its great and a good device for  VPN. Currently, i am using Broadband internet and looking forward to  setup this box in my office for mob...

On a cisco 2821 running 15.1(3)T1From this cisco DOC, common use of secondary IP addresses on an interface are•There might not be enough host addresses for a particular network segment. For example, suppose your subnetting allows up to 254 hosts per ...

Hello Netproi have OSPF Running in my enterprise as IGP i have a gig interface on router  ,but i do not configured the auto-cost reference-bandwidth ,what is cons if this command isn't configuredfor 1 gig  is it 10,000?thanks

Hi all, Some of you may know I have been asking various questions related to a University project so I have another question regarding this. We have multiple offices and the plan is to connect them via ISP's MPLS service , I want to be able to send r...

I had what I thought was a brilliant idea but it doesn't work and I would like to know whyrouter 1int 0ip nat outsideint 1ip nat insideint tunnel1source int 1destination  r2 int 1router 2int 0ip nat outsideint 1ip nat insidetunnel 1source int 1 desti...

Hi All,I was looking at injecting a conditional default route through RIP. I would like RIP to inject a default route if it sees 2 of its interfaces as UP. I am trying to make this work using (object tracking "AND" rule) and (default-information orig...

Here is a snippet from "show ip cache flow", from a border router of our network;SrcIf         SrcIPaddress    DstIf         DstIPaddress    Pr SrcP DstP  PktsGi0/3         1.2.3.4             Fa1/0*        192.168.1.66    11 F247 00A1     3 Gi0/3   ...

All,sorry for this newbie question but i have tried for many hours and cannot get this to work.  I am the proud owner of a cisco SGE2000P.  This switch is connected to a router which in turn is connected to an internet cable modem.  The router acts a...

Hello Guys,I'd like to configure a VPN with two SR520. the first router is a SR520-FE-K9 and it's at office, the second router is a SR520-ADSL-K9 and it's at home.Each router have a static IP and individually works well.I tried to configure, by CCA, ...

Hi,We have multihome configured using  BGP  on our core router as active active mode, we are facing a problem which i am mentioning below.When each ISP used indiviudally every thing works fine but when both the ISP's are up we cannot open facebook we...

after googled i found this http://www.tech-recipes.com/rx/80/change-the-enable-password-on-a-cisco-router/config tenable secret PaSsWoRdhttp://www.tech-recipes.com/rx/460/configure_cisco_switch_telnet_login_password/line vty 0 15password keepoutlogin...