Ability to browse LAN goes "deaf" after a while
If I reload the router, I'm able to browse the LAN over VPN. However, after a little while, it seems to go deaf, and even though my VPN client can initially connect, it doesn't seem to allow packets back to the VPN client if I ping the router.
The icmp debug shows the router is getting pings over VPN, and responding to them, but my VPN client is not getting the responses. I suspect there's still an issue with NAT, even though there are specific deny ACL entries in the ACL for the NAT statement.
Configuration attached. I've also attached current show access-lists output.
Regards,
Luis
The icmp debug shows the router is getting pings over VPN, and responding to them, but my VPN client is not getting the responses. I suspect there's still an issue with NAT, even though there are specific deny ACL entries in the ACL for the NAT statement.
Configuration attached. I've also attached current show access-lists output.
Regards,
Luis
Standard IP access list 1
10 permit 192.168.123.0, wildcard bits 0.0.0.255
Standard IP access list 3
10 permit 192.168.123.0, wildcard bits 0.0.0.255 (6 matches)
20 permit 192.168.129.128, wildcard bits 0.0.0.7 (4 matches)
30 permit 192.168.129.0, wildcard bits 0.0.0.255
Extended IP access list 101
10 permit ip 192.168.123.0 0.0.0.255 any
Extended IP access list 102
10 permit ip 192.168.123.0 0.0.0.255 any
Extended IP access list 150
10 deny ip any 192.168.128.128 0.0.0.31
20 deny ip any 192.168.129.128 0.0.0.7 (3785 matches)
30 permit ip 192.168.123.0 0.0.0.255 any (57876 matches)
Extended IP access list SDM_AH
10 permit ahp any any
Extended IP access list SDM_ESP
10 permit esp any any
!
! Last configuration change at 11:45:18 Pacific Sat Sep 11 2010
!
version 15.0
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname mre-van-cr01
!
boot-start-marker
boot-end-marker
!
security authentication failure rate 3 log
security passwords min-length 6
logging buffered 51200
logging console critical
enable secret 5 ***
!
aaa new-model
!
!
aaa authentication login default local
aaa authentication login ciscocp_vpn_xauth_ml_1 local
aaa authorization exec default local
aaa authorization network ciscocp_vpn_group_ml_1 local
!
!
!
!
!
aaa session-id common
!
!
!
clock timezone Pacific -8
clock summer-time Pacific date Apr 6 2003 2:00 Oct 26 2003 2:00
!
crypto pki trustpoint TP-self-signed-1507793008
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-1507793008
revocation-check none
rsakeypair TP-self-signed-1507793008
!
!
crypto pki certificate chain TP-self-signed-1507793008
certificate self-signed 01
30820251 308201BA A0030201 02020101 300D0609 2A864886 F70D0101 04050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 31353037 37393330 3038301E 170D3130 30393131 30313033
31345A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D31 35303737
39333030 3830819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
8100C150 094B319F 018EF68A F1173F1E 24011944 344D4F7D 6BC59164 73E9112D
36B74720 02E0F877 055BCB73 68F2D0EE CF5EC1D5 0776AEFC 8321AA11 59B32304
E2C4A11F 91838DB6 560B8798 8C653ECC AE77F524 EAF24827 1422CA93 B2184BA9
14AAD152 8F67B3B7 16397E99 7FA18030 D9513E50 858BC1FE 7963B0A6 633EEF0B
69230203 010001A3 79307730 0F060355 1D130101 FF040530 030101FF 30240603
551D1104 1D301B82 196D7265 2D76616E 2D637230 312E6D72 656E7669 726F2E6C
616E301F 0603551D 23041830 16801432 7128E8CF 28DF31A2 7E8314AB 66C0CFFD
23E69530 1D060355 1D0E0416 04143271 28E8CF28 DF31A27E 8314AB66 C0CFFD23
E695300D 06092A86 4886F70D 01010405 00038181 0060C1FA 8C93E8A5 458DCF70
5E6ED93F 6EA5BCB3 2FDCCF38 17BDCE22 DB9E6193 4EF968C1 9F64B380 A9575165
4A268D44 6575F1F2 6F1CDBF6 8E5CA156 0DFB4F57 3132BDEB B0B829C8 4CC02920
D219D551 A3A55DE9 60DEC000 1867E5B9 6F0DE238 1C58FDCC E2F6A852 00BDB7AD
83EE9C99 2C5EC97C 9299B1C8 E16AEACF 1C9F9E52 37
quit
no ip source-route
!
!
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.123.186
ip dhcp excluded-address 192.168.123.1 192.168.123.127
ip dhcp excluded-address 192.168.123.192 192.168.123.254
!
ip dhcp pool ccp-pool1
import all
network 192.168.123.0 255.255.255.0
dns-server 192.168.123.250
default-router 192.168.123.1
domain-name ***
lease 0 2
!
!
ip cef
no ip bootp server
ip domain name ***
ip name-server 204.174.64.1
ip name-server 204.174.65.1
no ipv6 cef
!
!
multilink bundle-name authenticated
license udi pid CISCO891-K9 sn ***
!
!
username admin privilege 15 secret 5 ***
!
!
ip tcp synwait-time 10
ip ssh time-out 60
ip ssh authentication-retries 2
!
class-map type inspect match-any SDM_AH
match access-group name SDM_AH
class-map type inspect match-any SDM_ESP
match access-group name SDM_ESP
!
!
!
crypto isakmp policy 1
encr 3des
authentication pre-share
group 2
!
crypto isakmp client configuration group MRE-ADMIN
key ***
dns 192.168.123.250
domain ***
pool SDM_POOL_1
acl 101
max-users 6
netmask 255.255.255.0
!
crypto isakmp client configuration group MRE-STAFF
key ***
dns 192.168.123.250
domain ***
pool SDM_POOL_2
acl 102
max-users 30
netmask 255.255.255.224
crypto isakmp profile ciscocp-ike-profile-1
match identity group MRE-ADMIN
match identity group MRE-STAFF
client authentication list ciscocp_vpn_xauth_ml_1
isakmp authorization list ciscocp_vpn_group_ml_1
client configuration address respond
virtual-template 1
!
!
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
!
crypto ipsec profile CiscoCP_Profile1
set security-association idle-time 900
set transform-set ESP-3DES-SHA
set isakmp-profile ciscocp-ike-profile-1
!
!
!
!
!
!
interface Loopback0
description $FW_INSIDE$
ip address 1.1.1.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
!
!
interface Null0
no ip unreachables
!
interface FastEthernet0
spanning-tree portfast
!
!
interface FastEthernet1
spanning-tree portfast
!
!
interface FastEthernet2
spanning-tree portfast
!
!
interface FastEthernet3
!
!
interface FastEthernet4
spanning-tree portfast
!
!
interface FastEthernet5
spanning-tree portfast
!
!
interface FastEthernet6
spanning-tree portfast
!
!
interface FastEthernet7
spanning-tree portfast
!
!
interface FastEthernet8
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
duplex auto
speed auto
!
!
interface Virtual-Template1 type tunnel
ip unnumbered Loopback0
tunnel mode ipsec ipv4
tunnel protection ipsec profile CiscoCP_Profile1
!
!
interface GigabitEthernet0
description ***Upstream to Internet***$ETH-WAN$$FW_OUTSIDE$
ip address 111.111.111.111 255.255.255.248
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat outside
ip virtual-reassembly
duplex full
speed 10
no cdp enable
!
!
interface Vlan1
description *** Local Network ***$ES_LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 1$$FW_INSIDE$
ip address 192.168.123.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip mtu 1492
ip flow ingress
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1452
load-interval 30
!
!
interface Async1
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
encapsulation slip
!
!
ip local pool SDM_POOL_2 192.168.128.129 192.168.128.158
ip local pool SDM_POOL_1 192.168.129.129 192.168.129.134
ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
!
ip nat inside source route-map NONAT interface GigabitEthernet0 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0 111.111.111.111
!
ip access-list extended SDM_AH
remark CCP_ACL Category=1
permit ahp any any
ip access-list extended SDM_ESP
remark CCP_ACL Category=1
permit esp any any
!
logging trap debugging
access-list 1 remark INSIDE_IF=Vlan1
access-list 1 remark CCP_ACL Category=2
access-list 1 permit 192.168.123.0 0.0.0.255
access-list 3 permit 192.168.123.0 0.0.0.255
access-list 3 permit 192.168.129.128 0.0.0.7
access-list 3 permit 192.168.129.0 0.0.0.255
access-list 101 remark CCP_ACL Category=4
access-list 101 permit ip 192.168.123.0 0.0.0.255 any
access-list 102 remark CCP_ACL Category=4
access-list 102 permit ip 192.168.123.0 0.0.0.255 any
access-list 150 deny ip any 192.168.128.128 0.0.0.31
access-list 150 deny ip any 192.168.129.128 0.0.0.7
access-list 150 permit ip 192.168.123.0 0.0.0.255 any
!
!
!
!
route-map NONAT permit 10
description *** NAT Address Translation Rule List ***
match ip address 150
!
!
!
control-plane
!
!
line con 0
logging synchronous
transport output telnet
line 1
modem InOut
stopbits 1
speed 115200
flowcontrol hardware
line aux 0
transport output telnet
line vty 0 4
access-class 3 in
logging synchronous
transport input telnet ssh
line vty 5 15
logging synchronous
transport input telnet ssh
!
scheduler max-task-time 5000
scheduler allocate 4000 1000
scheduler interval 500
ntp update-calendar
ntp server 17.151.16.20 prefer source GigabitEthernet0
ntp server 17.151.16.21 source GigabitEthernet0
ntp server 17.151.16.22 source GigabitEthernet0
ntp server 17.151.16.23 source GigabitEthernet0
end
I have solved this on many occasion with the old time solution: the host file.
%Windows%/system32/drivers
Run notepad as Administrator and browse to directory.
Chage notepad to all files.
# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost
192.168.123.250 server.local #or whatever you dns server is
Save the file. Flush the dns resolver cash. Reconnect the vpn and voila'.
Good luck,
Ken
%Windows%/system32/drivers
Run notepad as Administrator and browse to directory.
Chage notepad to all files.
# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host
# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost
192.168.123.250 server.local #or whatever you dns server is
Save the file. Flush the dns resolver cash. Reconnect the vpn and voila'.
Good luck,
Ken
ASKER
Thanks Ken - this is not a DNS issue, thanks for your comment though.
Regards,
Luis
Regards,
Luis
HI,
this config not allowing ping the router inside LAN address!
Why do you want to ping lan addres from VPN?
this config not allowing ping the router inside LAN address!
Why do you want to ping lan addres from VPN?
ASKER
For testing of connectivity. I also cannot use remote desktop to administer machines. Whether it's ping or remote desktop it doesn't matter.
The issue is that if I reload the router, I can access devices on the network on the very first VPN connection, if I disconnect VPN and reconnect, I can no longer access devices on the network.
The issue is that if I reload the router, I can access devices on the network on the very first VPN connection, if I disconnect VPN and reconnect, I can no longer access devices on the network.
strange....
What shows the 'sh cry isa sa' an 'sh cry ips sa' on the second connection?
What shows the 'sh cry isa sa' an 'sh cry ips sa' on the second connection?
ASKER
sh cry isa sa:
dst src state conn-id status
111.111.111.111 200.200.200.200 QM_IDLE 2018 ACTIVE
111.111.111.111 200.200.200.200 MM_NO_STATE 2017 ACTIVE (deleted)
IPv6 Crypto ISAKMP SA
sh cry ips sa
interface: Virtual-Access2
Crypto map tag: Virtual-Access2-head-0, local addr 111.111.111.111
protected vrf: (none)
local ident (addr/mask/prot/port): (192.168.123.0/255.255.255
remote ident (addr/mask/prot/port): (192.168.129.134/255.255.2
current_peer 200.200.200.200 port 47074
PERMIT, flags={origin_is_acl,}
#pkts encaps: 0, #pkts encrypt: 0, #pkts digest: 0
#pkts decaps: 166, #pkts decrypt: 166, #pkts verify: 166
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0
#pkts not decompressed: 0, #pkts decompress failed: 0
#send errors 0, #recv errors 0
local crypto endpt.: 111.111.111.111, remote crypto endpt.: 200.200.200.200
path mtu 1500, ip mtu 1500, ip mtu idb GigabitEthernet0
current outbound spi: 0x243E339(38003513)
PFS (Y/N): N, DH group: none
inbound esp sas:
spi: 0x9DBDD3FB(2646463483)
transform: esp-3des esp-sha-hmac ,
in use settings ={Tunnel UDP-Encaps, }
conn id: 31, flow_id: Onboard VPN:31, sibling_flags 80000046, crypto map: Virtual-Access2-head-0
sa timing: remaining key lifetime (k/sec): (4575336/3549)
IV size: 8 bytes
replay detection support: Y
Status: ACTIVE
inbound ah sas:
inbound pcp sas:
outbound esp sas:
spi: 0x243E339(38003513)
transform: esp-3des esp-sha-hmac ,
in use settings ={Tunnel UDP-Encaps, }
conn id: 32, flow_id: Onboard VPN:32, sibling_flags 80000046, crypto map: Virtual-Access2-head-0
sa timing: remaining key lifetime (k/sec): (4575373/3549)
IV size: 8 bytes
replay detection support: Y
Status: ACTIVE
outbound ah sas:
outbound pcp sas:
dst src state conn-id status
111.111.111.111 200.200.200.200 QM_IDLE 2018 ACTIVE
111.111.111.111 200.200.200.200 MM_NO_STATE 2017 ACTIVE (deleted)
IPv6 Crypto ISAKMP SA
sh cry ips sa
interface: Virtual-Access2
Crypto map tag: Virtual-Access2-head-0, local addr 111.111.111.111
protected vrf: (none)
local ident (addr/mask/prot/port): (192.168.123.0/255.255.255
remote ident (addr/mask/prot/port): (192.168.129.134/255.255.2
current_peer 200.200.200.200 port 47074
PERMIT, flags={origin_is_acl,}
#pkts encaps: 0, #pkts encrypt: 0, #pkts digest: 0
#pkts decaps: 166, #pkts decrypt: 166, #pkts verify: 166
#pkts compressed: 0, #pkts decompressed: 0
#pkts not compressed: 0, #pkts compr. failed: 0
#pkts not decompressed: 0, #pkts decompress failed: 0
#send errors 0, #recv errors 0
local crypto endpt.: 111.111.111.111, remote crypto endpt.: 200.200.200.200
path mtu 1500, ip mtu 1500, ip mtu idb GigabitEthernet0
current outbound spi: 0x243E339(38003513)
PFS (Y/N): N, DH group: none
inbound esp sas:
spi: 0x9DBDD3FB(2646463483)
transform: esp-3des esp-sha-hmac ,
in use settings ={Tunnel UDP-Encaps, }
conn id: 31, flow_id: Onboard VPN:31, sibling_flags 80000046, crypto map: Virtual-Access2-head-0
sa timing: remaining key lifetime (k/sec): (4575336/3549)
IV size: 8 bytes
replay detection support: Y
Status: ACTIVE
inbound ah sas:
inbound pcp sas:
outbound esp sas:
spi: 0x243E339(38003513)
transform: esp-3des esp-sha-hmac ,
in use settings ={Tunnel UDP-Encaps, }
conn id: 32, flow_id: Onboard VPN:32, sibling_flags 80000046, crypto map: Virtual-Access2-head-0
sa timing: remaining key lifetime (k/sec): (4575373/3549)
IV size: 8 bytes
replay detection support: Y
Status: ACTIVE
outbound ah sas:
outbound pcp sas:
ASKER CERTIFIED SOLUTION
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ASKER
If I disconnect from VPN, and reconnect shortly thereafter, I can't ping or browse any longer.
When monitoring ICMP debug info, the router gets the pings, but my client over VPN does not get the responses.
So, nothing else has changed, except connecting over VPN, disconnecting, and reconnecting.
Any ideas?
Regards,
Luis