Hey all,6.3(5), Pix 501 50user lic.
VPN works great with the exception of DNS. Pulling my hair out over this one. Here's the deal.
Small customer with no internal DNS or WINS.
I had to change the VPN pool from a different subnet (192.168.1.0/24) to using the same subnet as the internal lan (192.168.0.0/24), due to a windows firewall issue with it having to be on the same subnet...no biggie.... Adjusted the VPN config, budda-bing everything working, can now do file and print sharing, tested split tunnel by pinging a well known IP, everything looks great. Tell the customer he's all set and I'm off on my merry way.
Get a call back, split tunneling isn't working.....I VPN back in, I'm pinging IP's left and right....I see no issues. I open up a browser, no DNS, I ping by name, again, no DNS. I ping the DNS server by IP and it works perfect. I do an nslookup from the DNS server, up any running no problem.
This makes no sense! I've tried eveything I could think of by modifying the split tunnel list, from hosts only to denying 53, nothing seems to work.
Anyone run into this? Found any work arounds? Something screwed up in my config (posted below)? Damn, done 1000's of these things, never ran into this issue before!
If I roll back to using a seperate subnet for the VPN, DNS works fine, but file and print sharing breaks. Really don't feel like walking this guy thru changing all his windows firewall settings (which does work by allowing any to connect, I tried that).
pixfirewall# wr t Building configuration... : Saved : PIX Version 6.3(5) interface ethernet0 auto interface ethernet1 100full nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password passwd hostname pixfirewall domain-name ABC clock timezone EST -5 clock summer-time EDT recurring fixup protocol dns maximum-length 512 fixup protocol ftp 21 fixup protocol h323 h225 1720 fixup protocol h323 ras 1718-1719 fixup protocol http 80 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 fixup protocol tftp 69 names access-list inside_outbound_nat0_acl permit ip any 192.168.0.0 255.255.255.0 access-list outside_cryptomap_dyn_20 permit ip any 192.168.0.0 255.255.255.0 access-list splittunnel permit ip 192.168.0.0 255.255.255.0 192.168.0.025126.96.36.199 pager lines 24 logging console notifications mtu outside 1500 mtu inside 1500 ip address outside dhcp setroute ip address inside 192.168.0.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm ip local pool VPNPool 192.168.0.215-192.168.0.225 pdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 0 access-list inside_outbound_nat0_acl nat (inside) 1 0.0.0.0 0.0.0.0 0 0 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 sip-disconnect 0:02:00 sip-invite 0:03:00 timeout uauth 0:05:00 absolute aaa-server TACACS+ protocol tacacs+ aaa-server TACACS+ max-failed-attempts 3 aaa-server TACACS+ deadtime 10 aaa-server RADIUS protocol radius aaa-server RADIUS max-failed-attempts 3 aaa-server RADIUS deadtime 10 aaa-server LOCAL protocol local http server enable http 0.0.0.0 0.0.0.0 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 ESP-3DES-MD5 esp-3des esp-md5-hmac crypto dynamic-map outside_dyn_map 20 match address outside_cryptomap_dyn_20 crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-MD5 crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map crypto map outside_map interface outside isakmp enable outside isakmp nat-traversal 20 isakmp policy 20 authentication pre-share isakmp policy 20 encryption 3des isakmp policy 20 hash md5 isakmp policy 20 group 2 isakmp policy 20 lifetime 86400 vpngroup xxxxx address-pool VPNPool vpngroup xxxxx dns-server 188.8.131.52 184.108.40.206 vpngroup xxxxx default-domain ABC vpngroup xxxxx split-tunnel splittunnel vpngroup xxxxx idle-time 1800 vpngroup xxxxx password ******** telnet 0.0.0.0 0.0.0.0 inside telnet timeout 5 ssh 0.0.0.0 0.0.0.0 outside ssh timeout 5 console timeout 0 dhcpd address 192.168.0.125-192.168.0.175 inside dhcpd lease 3600 dhcpd ping_timeout 750 dhcpd domain ABC dhcpd auto_config outside dhcpd enable inside terminal width 80 Cryptochecksum:cfa6fe6a825ab7673096a834d2a9bbfb : end [OK]