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Help config Pix 501 . . . please

Okay here is the situation. I have been driving myself crazy trying to get this figured out but I am about ready to give up. This is my setup.

-Cable modem (DHCP) to

-Pix 501 (outside address->DHCP) (inside address->192.168.69.1 /24) to the rest of my network (192.168.69.X/24)

-I also have a Linksys switch connected to the Pix 501 and on the other end a Linksys Vonage router (192.168.15.1) I only say for information purposes, I am sure it will effect the access lists.

I can get it to work partially. I can VPN in and once in get back out, however all others on my home network can not get out to the internet if I can VPN in. Once I delete the access list I can get out from the inside network but can not VPN into the home network. I know it is a access list issue but for the life of me can not find a good way to create an access list for a dynamic outside address. Please help.

Here is the config for the can vpn in but no one can get out. (I know the access list is wrong. All the examples I found on the internet are about useless. I love it when the have access lists for networks that are not on the figure on the network diagram.)

PIX Version 6.3(1) interface ethernet0 auto interface ethernet1 100full nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password xxxxxxxxxxxxx encrypted passwd xxxxxxxxxxxxxxxxxx encrypted hostname xxxxxxxxxx domain-name ciscopix.com clock summer-time EST recurring 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

names access-list 101 permit ip 192.168.69.0 255.255.255.0 192.168.70.0

255.255.255.0 pager lines 24 logging on logging timestamp logging console informational mtu outside 1500 mtu inside 1500 ip address outside dhcp setroute ip address inside 192.168.69.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm ip local pool ippool 192.168.69.121-192.168.69.150 pdm logging informational 100 pdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 0 access-list 101 nat (inside) 1 192.168.69.0 255.255.255.0 0 0 nat (inside) 1 0.0.0.0 0.0.0.0 0 0 timeout xlate 0:05:00 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 192.168.69.0 255.255.255.0 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 myset esp-des esp-md5-hmac crypto dynamic-map dynmap 10 set transform-set myset crypto map mymap 10 ipsec-isakmp dynamic dynmap crypto map mymap interface outside isakmp enable outside isakmp identity address isakmp policy 10 authentication pre-share isakmp policy 10 encryption des isakmp policy 10 hash md5 isakmp policy 10 group 2 isakmp policy 10 lifetime 86400 vpngroup MillsVPN address-pool ippool vpngroup MillsVPN split-tunnel 101

vpngroup MillsVPN idle-time 1800 vpngroup MillsVPN password xxxxxxxxxx telnet timeout 5 ssh timeout 5 console timeout 0 dhcpd address 192.168.69.100-192.168.69.120 inside dhcpd lease 3600 dhcpd ping_timeout 750 dhcpd auto_config outside terminal width 80 Cryptochecksum:21e6a90b335dc627c6ef48088e0e192b : end

And here is a config of the can get out but can't get in.

PIX Version 6.3(1) interface ethernet0 auto interface ethernet1 100full nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password XXXXXXXXXXX encrypted passwd XXXXXXXXXXXXX encrypted hostname XXXXXXXX domain-name ciscopix.com 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 names pager lines 24 mtu outside 1500 mtu inside 1500 ip address outside dhcp setroute ip address inside 192.168.69.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm ip local pool ippool 192.168.69.121-192.168.69.126 pdm logging informational 100 pdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 1 192.168.69.0 255.255.255.0 0 0 nat (inside) 1 0.0.0.0 0.0.0.0 0 0 timeout xlate 0:05:00 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 192.168.69.0 255.255.255.0 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 myset esp-des esp-md5-hmac crypto dynamic-map dynmap 10 set transform-set myset crypto map mymap 10 ipsec-isakmp dynamic dynmap crypto map mymap interface outside isakmp enable outside isakmp identity address isakmp policy 10 authentication pre-share isakmp policy 10 encryption des isakmp policy 10 hash md5 isakmp policy 10 group 2 isakmp policy 10 lifetime 86400 vpngroup MillsVPN address-pool ippool vpngroup MillsVPN dns-server 24.31.195.63 24.31.195.64 vpngroup MillsVPN idle-time 1800 vpngroup MillsVPN password XXXXXXXXX vpngroup dns-server idle-time 1800 telnet 192.168.69.0 255.255.255.0 inside telnet timeout 5 ssh timeout 5 console timeout 0 dhcpd address 192.168.69.100-192.168.69.120 inside dhcpd lease 3600 dhcpd ping_timeout 750 dhcpd auto_config outside dhcpd enable inside terminal width 80 Cryptochecksum:90ff2e88a5974502ffc67fb7d5ae9c27 : end MillsVPN#

Any help would be much appreciated.

Reply to
ebrianmills
Loading thread data ...

get rid of this one : nat (inside) 1 192.168.69.0 255.255.255.0 0 0 by : no nat (inside) 1 192.168.69.0 255.255.255.0 0 0

on both of the cfg's

I assume it is client on 192.168.69.0 /24 that can't get out when you VPN in.

the ACl 101 doesnt makes sense -what is 192.168.70.0 ? also you need isakmp nat-t command added to your cfg since you run IP pool of same range as your subnet, you might wanna try this:

no ip local pool ippool 192.168.69.121-192.168.69.126 ip local pool ippool 172.16.1.1-172.16.1.5

no access-list 101 permit ip 192.168.69.0 255.255.255.0 192.168.70.0

255.255.255.0 access-list 101 permit ip 192.168.69.0 255.255.255.0 172.16.1.0 255.255.255.0

HTH Martin

Reply to
Martin Bilgrav

Okay I fixed those things and I am almost there. By the way, I can't explain the 192.168.70.0. What does the isakmp nat-t command do?

can get in and ping a couple of devices but I can not get back out to the internet. I also can not get the the pix (192.168.69.1). Also when I the pix gives me my ip (VPNd in) I get a 172.168.69.1 as a gateway. Is this correct?

Here is my config:

PIX Version 6.3(1) interface ethernet0 auto interface ethernet1 100full nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password XXXXXXXXXXXXXXX encrypted passwd XXXXXXXXXXXXXXX encrypted hostname MillsVPN domain-name ciscopix.com 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 names access-list 101 permit ip 192.168.69.0 255.255.255.0 172.168.69.0

255.255.255.0 pager lines 24 mtu outside 1500 mtu inside 1500 ip address outside dhcp setroute ip address inside 192.168.69.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm ip local pool ippool 172.168.69.1-172.168.69.15 pdm logging informational 100 pdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 0 access-list 101 nat (inside) 1 0.0.0.0 0.0.0.0 0 0 timeout xlate 0:05:00 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 192.168.69.0 255.255.255.0 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 myset esp-des esp-md5-hmac crypto dynamic-map dynmap 10 set transform-set myset crypto map mymap 10 ipsec-isakmp dynamic dynmap crypto map mymap interface outside isakmp enable outside isakmp identity address isakmp nat-traversal 20 isakmp policy 10 authentication pre-share isakmp policy 10 encryption des isakmp policy 10 hash md5 isakmp policy 10 group 2 isakmp policy 10 lifetime 86400 vpngroup MillsVPN address-pool ippool vpngroup MillsVPN dns-server 24.31.195.63 24.31.195.64 vpngroup MillsVPN idle-time 6000 vpngroup MillsVPN password XXXXXX vpngroup dns-server idle-time 1800 telnet 192.168.69.0 255.255.255.0 inside telnet timeout 5 ssh timeout 5 console timeout 0 dhcpd address 192.168.69.100-192.168.69.120 inside dhcpd lease 3600 dhcpd ping_timeout 750 dhcpd auto_config outside dhcpd enable inside terminal width 80 Cryptochecksum:b2e42f5cd171476646ccb828372cc6c5 : end MillsVPN(config)#

Thanks for the help.

Reply to
millsusaf

In article , millsusaf wrote: :From inside the network I can get out, and from outside the network I :can get in and ping a couple of devices but I can not get back out to :the internet.

You can't do that with a PIX 501.

:I also can not get the the pix (192.168.69.1).

You can only ping your "closest" interface, unless you are using a management VPN.

: Also :when I the pix gives me my ip (VPNd in) I get a 172.168.69.1 as a :gateway. Is this correct?

Possibly accurate, but certainly not "correct".

:Here is my config:

:PIX Version 6.3(1)

You need to upgrade to at least 6.3(4), as there are significant security issues with 6.3(1) and 6.3(3). The upgrade is free from

6.3(1) to 6.3(4). Search cisco's site for "PIX security advisories" for more details.

:access-list 101 permit ip 192.168.69.0 255.255.255.0 172.168.69.0 255.255.255.0

:ip address inside 192.168.69.1 255.255.255.0 :ip local pool ippool 172.168.69.1-172.168.69.15

I doubt you work for America Online (AOL), so it's not a good idea to be using their IP address space, 172.128.0.0 - 172.191.255.255

Your inside address space is 192.168.69/24, which is fine as that is part of the RFC1918 reserved private address spaces. But

172.168.69/24 is public IP space. The RFC1918 reserved private 172.* address spaces are 172.16.0.0 through 172.31.255.255. I suggest you choose a different IP space for your VPN -- something like 192.168.70/24 or 192.168.169/24 .
Reply to
Walter Roberson

":From inside the network I can get out, and from outside the network I :can get in and ping a couple of devices but I can not get back out to :the internet.

You can't do that with a PIX 501. "

That is crap. Does anyone know why that is? I work with Cisco 3000 series VPN all the time (yes they are dramatically different from Pix) and they can. I suspect it is because there is no way to exit the . . . . . no that is not true because people inside the network are able to get out while someone is VPNend in. (At least I hope, I have not tried this yet) Any ideas?

I made the IP address change. Yes I forgot basic network 101 there for a minute. Thanks for the reality check.

Latest config:

: Saved : PIX Version 6.3(1) interface ethernet0 auto interface ethernet1 100full nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password XXXXXXXXXXXXXXX encrypted passwd XXXXXXXXXXXX encrypted hostname MillsVPN domain-name ciscopix.com 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 names access-list 101 permit ip 192.168.69.0 255.255.255.0 172.26.69.0

255.255.255.0 pager lines 24 mtu outside 1500 mtu inside 1500 ip address outside dhcp setroute ip address inside 192.168.69.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm ip local pool ipool 172.26.69.10-172.26.69.25 pdm logging informational 100 pdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 1 0.0.0.0 0.0.0.0 0 0 timeout xlate 0:05:00 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 192.168.69.0 255.255.255.0 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 myset esp-des esp-md5-hmac crypto dynamic-map dynmap 10 set transform-set myset crypto map mymap 10 ipsec-isakmp dynamic dynmap crypto map mymap interface outside isakmp enable outside isakmp identity address isakmp nat-traversal 20 isakmp policy 10 authentication pre-share isakmp policy 10 encryption des isakmp policy 10 hash md5 isakmp policy 10 group 2 isakmp policy 10 lifetime 86400 vpngroup MillsVPN address-pool ipool vpngroup MillsVPN dns-server 24.31.195.63 24.31.195.64 vpngroup MillsVPN idle-time 6000 vpngroup MillsVPN password XXXXXXXXXX vpngroup dns-server idle-time 1800 telnet 192.168.69.0 255.255.255.0 inside telnet timeout 5 ssh timeout 5 console timeout 0 dhcpd address 192.168.69.100-192.168.69.120 inside dhcpd lease 3600 dhcpd ping_timeout 750 dhcpd auto_config outside dhcpd enable inside terminal width 80 Cryptochecksum:11715ba5a15084c360f39b12725c40d2 : end MillsVPN#

Anyone see anything else wrong. Thanks for all the help!

Reply to
millsusaf

In article , millsusaf wrote: :":From inside the network I can get out, and from outside the network I ::can get in and ping a couple of devices but I can not get back out to ::the internet.

:You can't do that with a PIX 501. "

:That is crap. Does anyone know why that is?

Going back out the same interface one came in would require communications between two interfaces of the same security level. PIX through 6.x does not allow that. PIX 7.0 does in some cases, but PIX 7.0 is not available on the 501.

Remember that the security model of the PIX is based upon security levels: lower to higher acts such and such a way, higher to lower acts this and that a way. Now which of the two ways should be used when one is going between two interfaces of the same level, particularily when one is working with UDP (which is directionless, so you can't tell "response" apart from "transmission".)

:I work with Cisco 3000 :series VPN all the time (yes they are dramatically different from Pix) :and they can. I suspect it is because there is no way to exit the . . :. . . no that is not true because people inside the network are able to :get out while someone is VPNend in. (At least I hope, I have not tried :this yet) Any ideas?

There are alternatives (of various degress of satisfaction) available for every -other- PIX 5xx model, but the PIX 501 does not support any of them.

Reply to
Walter Roberson

*the penny drops* Ahh - that is what you mean and what to do ... (!) Sorry but I though you meant the inside clients could access the Net, when you VPN'ed in ..

What you may do is to creat the VPN group with Splittunneling and Allow local LAN access on the client software.

This way you can VPN to the inside, and whatevery public internet traffic goes directly from the remote client to the Net.

Alternative you must install a Proxy server on the inside interface-LAN, or have a router just after the inside, that can "turn" the packets for you.

btw the Nat-t is for NAT-Traversal of the IPSEC Packets.

HTH Martin

Reply to
Martin Bilgrav

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