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To rephrase the question, "Can I use masquerading and proxy ARP in the same zone simultaneously?" It''s not a stupid question--I couldn''t see any reason why it wouldn''t work, but I had actually try it out to convince myself that it did (which isn''t a bad thing to do before posting the question to the list, by the way). In any case, the answer is

>From http://shorewall.net/ProxyARP.htm (and the Setup Guide): > A word of warning is in order here. ISPs typically configure their > routers with a long ARP cache timeout. If you move a system from > parallel to your firewall to behind your firewall with Proxy ARP, it > will probably be HOURS before that system can communicate with the > internet. You can call your ISP and ask

Hmm--either the indexing process is still running, or it''s broken again. It''s 0443 GMT, and I can''t get the search engine to find anything on the mailing list or the web site (I used ''dns'' as my search term). It''s not that big of an inconvenience, though--Googling for ''site:shorewall.net dns'' does pretty much the same thing.

That log message looks like someone (or some program) is trying to browse to moreover.com from your web server machine--it''s not a reply to an external request. You''d see messages like that if you were running some sort of HTTP proxy server (like Squid) on that box (although they''d likely be to multiple IPs, unless your users only browsed to p.moreover.com). It could

Hi, I am trying to configure the SMTP service on DMZ host. Added the rule: ACCEPT wan dmz:66.58.99.84 tcp pop3 - ACCEPT wan dmz:66.58.99.84 tcp 25 - ACCEPT dmz:66.58.99.84 wan tcp 25 - ACCEPT dmz:66.58.99.84 wan tcp pop3 - issued shorewall clear, shorewall restart, but still couldn''t telnet to the mail server

While I''m in temporary retirement, I''ve decided spend a little time experimenting with new things and making some updates to the web site. The biggest result of this effort to date has been: http://shorewall.sf.net/Shorewall_Squid_Usage.html This outlines how to use Squid as a transparent proxy running on the firewall, in the DMZ or in the local network. In the latter two

Tom Eastep wrote: > On Mon, 2005-01-03 at 15:22 -0800, Boyd Kelly (Coast Systems) wrote: > > Thanks for such a quick reply Tom! > > > > Any suggestions then as to what I might do other than > putting a second > > nic in the SBS and opening it up for web access? I don''t > like the idea, > > but since MS SBS includes fireall that is actually what

Those are just late DNS replies--port 53 is DNS, and the IP you gave points to a DNS server (ns1.gci.net). "dig -x" is your friend :) The connection tracking table used by iptables to masquerade your internal network will only "hold open" a UDP connection for a certain amount of time; if no traffic flows in either direction, the entry in the connection tracking table will be

Hi, I ran across a case in which my server maintenance was simplified by using SSHD configuration options like this in sshd_config: AllowGroups admin at 192.168.0.* sshuser in much the same fashion as (Allow|Deny)Users. In this case, the goal is to provide access to administrators only from the local network, while allowing SSH users to login from anywhere. This (IMHO) simplifies access