Re: DNS cache poisoning

["Shanon" <liquid_nitrogen79 () hotmail com>]

1. the DNS server maintains cache in memory so that it need not dig into
recent most resolve requests. this cache is like a table name versus IP. if
we some how manipulate this refrence to invalid IP it's called poisioning

2. IMO no that is why SSH and stuff came

3.Both Tacacs and radius are for AAA(authentication, authorization and
accounting). Tacacas is supported for cisco. radius is now being replaced by
diameter protocol over ipsec protocol + sctp + ipv6



----- Original Message -----
From: "vijay vikram shreenivos" <karpagamekapali () rediffmail com>
To: <SECURITY-BASICS () SECURITYFOCUS COM>
Sent: Saturday, December 14, 2002 11:59 AM
Subject: DNS cache poisoning


> hi list..........
>
> 1.what is DNS cache poisoning
>
> 2.is there any way to send secure messages over telnet or ftp
> other than ssh.
>
> 3.what is exact diff btw TACACS and RADIUS
>
> awaiting your kind replies
>
> karpagamekapalidurgau
>
>
>
> vijay vikram shreenivos