Re: ACL router problem

[Dan Vultur <dv_itsec () yahoo com>]

Juan,

It depends how did you add the first line, did you do it after the ACL was in 
place or not? Cisco processes the ACL line by line and if you just added the 
line if will put it after the implicit deny rule so maube this is the case.
I recommend to erase the entire ACL and then write the whole ACL the way you 
have it in this e-mail, or make a new ACL, let's say 112 and apply that one on 
the interface and see if it works. Use a text editor to copy/paste as for me 
that's the simplest way.

Hth,

Dan


----- Original Message ----
From: Juan B <juanbabi () yahoo com>
To: security basics <security-basics () securityfocus com>
Sent: Fri, October 8, 2010 12:40:05 AM
Subject: ACL router problem

Hi ALL !!

I need to connect from a host (192.168.8.139)in the lan to host
192.168.1.15 so I put acl like this: ( I added the first line )

access-list 111 permit tcp host 192.168.8.139 any
access-list 111 permit tcp 192.168.0.0 0.0.255.255 host 192.168.8.2 eq
telnet
access-list 111 permit tcp host 192.168.8.7 any
access-list 111 permit tcp 192.168.0.0 0.0.255.255 any eq www
access-list 111 permit udp 192.168.0.0 0.0.255.255 any eq domain
access-list 111 permit tcp 192.168.0.0 0.0.255.255 any eq 443
access-list 111 permit tcp 192.168.0.0 0.0.255.255 any eq 5900
access-list 111 permit ip host 192.168.8.198 any
access-list 111 permit ip host 192.168.8.199 any
access-list 111 permit icmp any any echo-reply
access-list 111 permit icmp any any echo
access-list 111 permit icmp any any source-quench
access-list 111 permit icmp any any time-exceeded
access-list 111 deny  icmp any any
access-list 111 permit tcp any any established
access-list 111 deny  ip any any log

take a look also at line 3 of the acl this host is the internal mail
server, from that mail server when I try to connect to host
192.168.1.15 there is no problem !!! so I made a similar entry to
enable connection from my host (192.168.8.139) but It doesnt work !! I
know its a problem of the ACL beacuse when I remove this ACL (which is
applied to vlan 1 BTW) the connection works!!

please help !
marco



      

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------------------------------------------------------------------------
Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate.  We look at how SSL works, how 
it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, 
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highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

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