3Com TC IP Numbering??
Hello List: I am trying to setup a 3Com TC Chassis. Since this is my first try & I am the type of person who read, plan & design every thing to death, a million thoughts are going through my mind. So before I go koo-koo, I thought I post the following questions to the list: 1. Public vs Private IP Address (3Com Chassis) ------------------------------------------- Should I assign public or private IP address to the 3Com. I am trying to figure out pro and cons. If I assign public IP address (in my case 12.21.237.X), then it is open to the whole world. Someone may try to HACK it (tell me if it happens). But then if there is a question to 3Com list, then people trying to help can PING the Chassis (it has happened before)and post their responses. 1. Public vs Private IP Address (Dial-In) ------------------------------------------- Is it possible to assign private IP addresses (192.168.1.X) to Dial-In users in a 3Com Chassis or they have to be private IP addresses? Thanks. Kirt Bajwa TIB Computer Systems Mountain City, TN 37683 Tel: (423) 727-3001 eMail: kbajwa@tib.com
Hello Kirti. 1: You can assign private address for your arc, but for example it wont be able to send icmp-destination-host-unreachable if ip from dial-in pool is not used (this icmp packet with private source address wont reach its destination). You can always limit access to your arc with access-lists (better to do it on border routers in your network). You can freely set private address to NMC. Only you use it. P.S. Don't forget to limit telnet access to your arc by "add telnet client <ip/netmask>" and "enable telnet client_access". 2: Dial-in clients: if you have lack of public ip addresses you must assign them private addresses and then translate to public. In other cases I dont think that it's good idea to assign private addresses to dial-in clients. You can protect your public ip pool for dial-in users from outside internet with access-lists, both on arc and on border router, closing some ports (netbios over tcp, proxy, telnet, ports used by some worms/viruses, etc). ----- Original Message ----- From: "Kirti S. Bajwa" <kbajwa@tib.com> To: <usr-tc@mailman.xmission.com> Sent: Wednesday, September 10, 2003 2:12 AM Subject: [USR-TC] 3Com TC IP Numbering??
Hello List:
I am trying to setup a 3Com TC Chassis. Since this is my first try & I am the type of person who read, plan & design every thing to death, a million thoughts are going through my mind. So before I go koo-koo, I thought I post the following questions to the list:
1. Public vs Private IP Address (3Com Chassis) -------------------------------------------
Should I assign public or private IP address to the 3Com. I am trying to figure out pro and cons. If I assign public IP address (in my case 12.21.237.X), then it is open to the whole world. Someone may try to HACK it (tell me if it happens). But then if there is a question to 3Com list, then people trying to help can PING the Chassis (it has happened before)and post their responses.
1. Public vs Private IP Address (Dial-In) -------------------------------------------
Is it possible to assign private IP addresses (192.168.1.X) to Dial-In users in a 3Com Chassis or they have to be private IP addresses?
Thanks.
Kirt Bajwa TIB Computer Systems Mountain City, TN 37683 Tel: (423) 727-3001 eMail: kbajwa@tib.com
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Kirti S. Bajwa