when dealing with access-list we use both TCP & UDP. For example we use
tcp 53 or udp 53 for domain.
My Q is when & how we know when we should use UDP and when TCP .
what is the difference .
Thanks
Shella K.
you a help list with the most common UDP and TCP ports you
may use. For a comprehensive list search on Cisco's Website.
Regards,
Ednilson Rosa
- Original Message -
From: "shella kevin"
To:
Sent: Monday, August 27, 2001 8:04 AM
Subject: access-list & ports ( TCP /UD
You should understand which applications use which ports and why they use
them if you are a network administrator and to implement any type of
filtering. You should check out which network applications you use (SMTP,
DNS,.. etc ) and look them all up in the rfc to see how they work. Making
the ac
hella kevin"
>To:
>Sent: Monday, August 27, 2001 8:04 AM
>Subject: access-list & ports ( TCP /UDP) [7:17374]
>
>
>when dealing with access-list we use both TCP & UDP. For example we use
>tcp 53 or udp 53 for domain.
>
>My Q is when & how we know when we s
I use http://www.iana.org/assignments/port-numbers for finding out about
port numbers. Re the dns topic below, udp is fine for a company that does
not have its own dns servers and only makes queries. TCP is used for zone
transfers. I believe that in newer versions of bind, random hi port
number
e -
>From: "shella kevin"
>To:
>Sent: Monday, August 27, 2001 8:04 AM
>Subject: access-list & ports ( TCP /UDP) [7:17374]
>
>
>when dealing with access-list we use both TCP & UDP. For example we use
>tcp 53 or udp 53 for domain.
>
>My Q is when &a
The problem with this list is that every application seem to use both UDP
and TCP, which is not always true.
Ednilson Rosa
- Original Message -
From: "Brian Whalen"
To:
Sent: Monday, August 27, 2001 5:03 PM
Subject: Re: access-list & ports ( TCP /UDP) [7:17374
uot;Brian Whalen"
>To:
>Sent: Monday, August 27, 2001 5:03 PM
>Subject: Re: access-list & ports ( TCP /UDP) [7:17374]
>
>
>I use http://www.iana.org/assignments/port-numbers for finding out about
>port numbers. Re the dns topic below, udp is fine for a company that does
m to use both UDP
> and TCP, which is not always true.
>
> Ednilson Rosa
>
> - Original Message -
> From: "Brian Whalen"
> To:
> Sent: Monday, August 27, 2001 5:03 PM
> Subject: Re: access-list & ports ( TCP /UDP) [7:17374]
>
>
> I use htt
s that every application seem to use both UDP
>> and TCP, which is not always true.
>>
>> Ednilson Rosa
>>
>> - Original Message -
>> From: "Brian Whalen"
>> To:
>> Sent: Monday, August 27, 2001 5:03 PM
>> Subject: Re: access-list &
The problem with this list is that every application seem to use both
UDP
> >> and TCP, which is not always true.
> >>
> >> Ednilson Rosa
> >>
> >> - Original Message -
> >> From: "Brian Whalen"
> >> To:
> >>
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