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New Member

Network Browsing problem by VPN Client

Hy all,

This is my PIX configuration, VPN client work fine but when try by VPN Client the network browsing this is dropped by the firewall, in fact I obtain from PIX the deny message for UDP 138, UDP 137, 1056 and 1058.

What is the problem??

fixup protocol ftp 21

fixup protocol h323 h225 1720

fixup protocol h323 ras 1718-1719

fixup protocol http 80

fixup protocol ils 389

fixup protocol rsh 514

fixup protocol rtsp 554

fixup protocol sip 5060

fixup protocol sip udp 5060

fixup protocol skinny 2000

fixup protocol smtp 25

fixup protocol sqlnet 1521


access-list outside_access_in permit icmp any any echo-reply

access-list nonat permit ip any

pager lines 24

logging on

logging buffered notifications

logging trap notifications

logging host inside

mtu outside 1500

mtu inside 1500

ip address outside 200.200.XXX.XXX

ip address inside

ip audit info action alarm

ip audit attack action alarm

ip local pool Net

pdm location inside

arp timeout 14400

global (outside) 1 interface

nat (inside) 0 access-list nonat

nat (inside) 1 0 0

access-group outside_access_in in interface outside

route outside 200.200.XXX.XXX 1

timeout xlate 3:00:00

timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00

timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00

timeout uauth 0:05:00 absolute

aaa-server TACACS+ protocol tacacs+

aaa-server RADIUS protocol radius

aaa-server LOCAL protocol local

http server enable

http inside

http inside

no snmp-server location

no snmp-server contact

snmp-server community public

no snmp-server enable traps

floodguard enable

sysopt connection permit-ipsec

crypto ipsec transform-set TRSET esp-3des esp-sha-hmac

crypto dynamic-map dynmap 10 set transform-set TRSET

crypto map VPN 10 ipsec-isakmp dynamic dynmap

crypto map VPN interface outside

isakmp enable outside

isakmp identity address

isakmp nat-traversal 20

isakmp policy 10 authentication pre-share

isakmp policy 10 encryption 3des

isakmp policy 10 hash sha

isakmp policy 10 group 2

isakmp policy 10 lifetime 86400

vpngroup Net address-pool Net

vpngroup Net dns-server

vpngroup Net wins-server

vpngroup Net default-domain

vpngroup Net idle-time 1800

vpngroup Net password ********

telnet inside

telnet timeout 5

ssh timeout 5

console timeout 0

terminal width 80

Tanks all.

Cisco Employee

Re: Network Browsing problem by VPN Client

NW browsing issues are rarely to do with the head-end termination device, so I'm confused you're actually seeing deny messages on the PIX (they may be unrelated and coming from internal devices though).

Please go through the following URL and make sure your clients are set up correctly:

New Member

Re: Network Browsing problem by VPN Client

I obtain deny message only when the VPN client try to search one inside computer by name (NET VIEW COMPUTER1).



Re: Network Browsing problem by VPN Client

Hi -

What about by IP, does it work when it tries to search for the computer by Ip address only ??

Thanks -

New Member

Re: Network Browsing problem by VPN Client


This is the situation:


The VPN Client send this command: NET VIEW COMPUTER1

The PIX log contain Deny UDP 138 - Deny UDP 137 - Deny UDP 1056 - Deny UDP 1058

The VPN Client obtain error to browse network.


The VPN Client send this command: NET VIEW (COMPUTER1 IP Address)

The VPN Client obtain the browse of shred resource