Hi all,
I have a very strange problem with OUTSIDE interface and remote ssh. Well, I have followed documentation and configure remote access for ssh like this [1.]. If I want to connect from internet to OUTSIDE interface [2.] get no response and in log I can see this message [3.]. I really do not understand why is ssh connection dropped by OUTSIDE access-list [4.]? If I understand documentation correctly there is no impact for remote mangement/access like icmp, ssh, http(s) by interface access-list. So, why?
When I try ssh connection form internal network to INSIDE interface everything works fine and I can log in to ASA. If I try allow ssh in OUTSIDE access-list still no success and a get this message [5.]? It is strange, isn't?
The same problem with icmp if I want to "ping" OUTSIDE interface from internet a get thish message in log [6.] and configuration for ICMP like this [7.].
Full ASA config is in attachment.
Can anybody help how to fix it and explain what is exactly wrong.Thanks.
Regards,
Karel
[1.]
ssh stricthostkeycheck
ssh 10.0.0.0 255.255.255.0 INSIDE
ssh 0.0.0.0 0.0.0.0 OUTSIDE
ssh timeout 60
ssh version 2
ssh key-exchange group dh-group1-sha1
ASA-FW01# show ssh
Timeout: 60 minutes
Version allowed: 2
10.0.0.0 255.255.255.0 INSIDE
0.0.0.0 0.0.0.0 OUTSIDE
[2.]
ASA-FW01# show nameif
Interface Name Security
Vlan10 INSIDE 100
Vlan20 EXT-VLAN20 0
Vlan30 EXT-WIFI-VLAN30 10
Vlan100 OUTSIDE 0
ASA-FW01# show ip
System IP Addresses:
Interface Name IP address Subnet mask Method
Vlan10 INSIDE 10.0.0.1 255.255.255.0 CONFIG
Vlan20 EXT-VLAN20 10.0.1.1 255.255.255.0 CONFIG
Vlan30 EXT-WIFI-VLAN30 10.0.2.1 255.255.255.0 CONFIG
Vlan100 OUTSIDE 85.71.188.158 255.255.255.255 CONFIG
Current IP Addresses:
Interface Name IP address Subnet mask Method
Vlan10 INSIDE 10.0.0.1 255.255.255.0 CONFIG
Vlan20 EXT-VLAN20 10.0.1.1 255.255.255.0 CONFIG
Vlan30 EXT-WIFI-VLAN30 10.0.2.1 255.255.255.0 CONFIG
Vlan100 OUTSIDE 85.71.188.158 255.255.255.255 CONFIG
ASA-FW01# show interface OUTSIDE detail
Interface Vlan100 "OUTSIDE", is up, line protocol is up
Hardware is EtherSVI, BW 100 Mbps, DLY 100 usec
Description: >>VLAN pro pripojeni do internetu<<
MAC address f44e.05d0.6c17, MTU 1480
IP address 85.71.188.158, subnet mask 255.255.255.255
Traffic Statistics for "OUTSIDE":
90008 packets input, 10328084 bytes
60609 packets output, 13240078 bytes
1213 packets dropped
1 minute input rate 15 pkts/sec, 994 bytes/sec
[3.]
Jan 13 2015 06:45:30 ASA-FW01 : %ASA-6-106100: access-list OUTSIDE denied tcp OUTSIDE/193.86.236.70(46085) -> OUTSIDE/85.71.188.158(22) hit-cnt 1 first hit [0xb74026ad, 0x0]
[4.]
access-list OUTSIDE remark =======================================================================================
access-list OUTSIDE extended permit icmp any any echo-reply
access-list OUTSIDE extended deny ip any any log
access-group OUTSIDE in interface OUTSIDE
[5.]
Jan 12 2015 23:00:46 ASA-FW01 : %ASA-2-106016: Deny IP spoof from (193.86.236.70) to 85.71.188.158 on interface OUTSIDE
[6.]
Jan 13 2015 06:51:16 ASA-FW01 : %ASA-4-400014: IDS:2004 ICMP echo request from 193.86.236.70 to 85.71.188.158 on interface OUTSIDE
[7.]
icmp unreachable rate-limit 1 burst-size 1
icmp permit 10.0.0.0 255.0.0.0 INSIDE
icmp permit 10.0.0.0 255.0.0.0 EXT-WIFI-VLAN30
icmp permit any OUTSIDE
